signet 615 anaesthesia workstation signet 615 anaesthesia
Contents
1. Hu T2 _ 2___J oB Le e A e Sie e e e e SECOND STAGE DE sum REGULATDRS POER Osma q w h ch NE MU XYGE m ju YA FAILURE o0 a Q WARNING DEVICE ce Za VENTILATOR Ke SUPPLY CES SOLENOID e a e a a zelo S 3 Y SZ O i m e ee o oft H o oH H FIRST PCR on C m2. Figure 39 Overall schematic of gas supply system 440 MOTE WO 08 ger am E X LI ebe x C o uy z 3 3 cz gt ub ven Zo gt gt Zz e T zi in S a n x a In D zi Q j x n bei ES x x LJ S 7 MOVIE AMA exp 0021 Hi e J EI e D e B S o x E Y T gt lt 1 St S nm e J 5 los i Ha J qe a HOVTE ATA 9x8 062 5 ari E 3LIHA NOTAN 91 002 2 m S 3078 NOTAN 91 0001 n ndi PEDI HE Cs 2 E ss 1 N ATDd lt bx9 gt 00 D J ce LD fa d y MER Re T Bed n d dz o U S D E E n X C T H a x gt 7 4011 BR Eh n Ut a E u El SS S m 5 a o TE lt X e H s E ae ego Quo A p 31IHM AJUd c Zi s X9 081 M w 5 NE ale nz TT I Su DI gt SE HEZ ES eem Li gt D SI IN i o D gt n 71 a s EI Ne z OW gt 5 Veg 1 LJ 2 lt z S S R 4 W S ee 2 r gn MNUTAN 91 E 00 LIHAM A E Kid X9 006 S 2 nz k Lu a a E E a ONIANL N3ddD2 Y 91 OvZ EE SN Hei A avg SE mjo Hn lt 25 002 I NE p ni mE 31IHA Oz o li A j kx9 069 ca
3. EE 81 9L1N9 NI HSnd ji c ONIS 179 1 X 8 MOET3 NI HSNd Lace 1 8 1 x 9 57 Assembly drawing of patient block Figure 38 Signet 615 Service Manual 58 tic of Gas Control Syste ALIHM Ald vx9 D I
4. Signet 615 Service Manual A603121 N gt lt K Kei G A7071 A7071 N A Ne d A SES A703 BODY ASSEMBLY Figure 43 GAS RAIL BOX ASSEMBLY Figure 44 62 Signet 615 Service Manual Figure 45 A7035 COVER FRONT ASSEMBLY 63 Signet 615 Service Manual 64 A70761 A60762 Figure 46 A7076 COVER REAR ASSEMBLY NOT SHOWN A60823 SM04068 Figure 47 A708 WORK TABLE ASSEMBLY A60811 RUBBER EDGING 1500 LONG _7 A70824 Signet 615 Service Manual 0911 na A7 A709 DRAWER ASSEMBLY 3 SET Figure 48 65
5. Signet 615 Service Manual PA A3056121 A gt taa O R 5006 TS a kS SE d W A A NT RN XJ Pd ke amp S4 A A605612 E du E X p Ps d L A30561 RG205 4 Hw X A605611 a Pd A gt Figure 18 A6056X Ventilator Cutoff Valve 5 5 5 Test of A6056 Ventilator Cut Off valve 1 Preparation a Puta test gauge on the test point b Connect the oxygen cylinder gas to the anaesthetic machine and disconnect the medical gas supply pipelines from the walls We must read 360 kPa in the test gauge Check that there is no leak around the A6056 Ventilator Cut off and AGO56X d By adjusting the RG1 oxygen regulator we reduce the pressure to 220 kPa and check that there is no oxygen coming through the Ventilator Drive valve AGO56x To do this press the non return valve and no gas should come through e Again re adjust the RG1 regulator to 250 kPa and check that the gas comes through the ventilator drive valve AGO56X f Re adjust RG1 to its setting pressure of 360 kPa 9 36 Signet 615 Service Manual 5 6 Anti hypoxic device 5 6 1 Technical description of the anti hypoxic device The device is factory set to deliver a minimum 2196 nominal oxygen flow Medical air flow
6. O RING MANIFOLD OXYGEN A60721 R5013 SCREW MANIFOLD EXTENSION A30572 CONNECTOR VENT DRIVE A605611 INDEX RING OXYGEN IROO1 GRUB SCREW SMO606G CAL Figure 37 Exploded view of manifold block assembly Signet 615 Service Manual Patient Block A7085 6 5 V YA O GSOLYV Y Y Mile N v V NOILOSS S L 0SV T T OSOPSONS 4_ y d vi8ld J CUN UWA ZZLLOLV E gt Ne ZELLOLV GO 914H C 3 990 0INS LELLOSY AA 0 V IS9LEONS V
7. Ulco medical 1 SIGNET 615 ANAESTHESIA WORKSTATIO SERVICE MANUAL e This page intentionally left blank Copyright 1993 2005 by Ulco Medical All rights reserved No part of this publication may be reproduced in any form in an electronic retrieval system or otherwise without the written permission of the Ulco Medical All Ulco products are subject to a program of continuous development and the manufacturer reserves the right to make alterations in design and equipment without prior notice Document Number SG6 UM 002 Version 1 4 0123 This page intentionally left blank Table of Contents SL 9 ES La lo EU da LEA nal AAA AAA AAA AAA keka n Kam keka a k akla ka kala Va a d dk ken Bar aw ed a baw due 9 1 2 Qualifications for Servicing sis xxx stress EELER ENEE kaka san dek au ra k a cea yu Wa dg bests castes EES 9 NO 9 2 Workstation Overview cui iia 9 2 1 Major Ny D D DPDDDD eooeo ermnnsg 9 KC de e UE E 10 VES Typical configul atlO TP At 10 EE egere 11 3 1 Device ClassiflGatlOna siae n i eicere D Ee ya eee EE EE Fa A ia 11 3 2 Electromagnetic ENVIRONMENT cerra eit cba k Senek neka KER ERR da 11 33 Gas Supply SM iaa 12 3 3 1 Gas Riet EE 12 3 3 2 IIOWImIeterS A KEK Ee EEN 12 3 3 3 VapOLIS CIS sr sane o Lm 13 3 3 4 Patent BOCK sc sis Geen dee bek Ker n Eege EEN 13 3 3 5 THEANTINYPOXIC COVI
8. Disassemble this side by removing A30554 Oxygen block A30553 body A305531 spool whistle gasket A305522 diaphragm A395534 and spring A305543 Replace the o ring OR 5006 and apply silicone grease Molykote 111 on it d The diaphragm A305534 and gasket A305522 must also be changed but assemble it dry no grease on it Make sure the 2mm hole of the gasket A305522 and A30552 body align when assemble e The spring A305543 can also be replaced A305511 STUD A OR 5011 A gt Q f Proceed to reassemble into the A6055 A305516 N20 DIAPHRAGM 4305514 A305522 GASKET N20 SPOOL A30551 BODY Neo A30554 OXYGEN BLOCK L_a305s41 STUD OXYGEN ADJUSTMENT Figure 14 Exploded View A6055 Oxygen Failure Alarm Replacement of o ring OR 5006 on needle whistles adjustment a Unscrew nut NU M6 by using a 10mm spanner then remove needle A305521 b Remove o ring OR 5006 replace and grease it with silicone grease Molykote 111 Signet 615 Service Manual C Reassemble it back leaving the NU M6 nut This nut will be lock during whistle test 5 4 5 Calibration of A6055 Oxygen Failure Alarm 1 Preparation a b c d Install the A6055 in the pneumatic bracket of the anaesthetic machine Connect tubing into the A6055 Oxygen Failure Alarm Connect the cylinder gases N20 and Oxygen to the anaesthetic machine not the medical gas supply pipelines from the walls Switch ON the anaesthetic machine
9. Servic KIT da nda E cele dia kak de kay kre Ede eee case cur derka Van k dae Kela Rides 34 9840 27 TOONS tO be sed uinci tr i 34 5 5 3 Preparation to service A6056 Ventilator Cutoff ek ENEE 34 bibi SERVICE Procedure rst iiem tnt tree er anh dede n e o eati n adir t r erui da ii 34 5 5 5 Test of A6056 Ventilator Cut Off valve Ek nennen nennen 36 5 6 Antihypoxic de VIA eE ea Vu 37 5 6 1 Technical description of the anti hypoxic device issu 37 5 6 2 AHDG0 99 Service Kilis xwa niyen yaki diay n yan piya ker bek kera s KEVE kav n va kak yaya k ya Arde VE a VEYE EWAN KEYAN 38 5 6 3 Tools to be USE EE 38 5 6 4 Preparation to service AHD6O anti hypoxic device sis 38 5 6 5 Service Proc dure is cea YN Ze A A T 38 5 6 6 Test of AHD6O anti hypoxic device EE 42 5 7 Selectatec Assembly AGO Ds siemens mise a d yee na ve ce UY e e REB ku d av ee y ka RES Y n k de ke E wa ek 43 BGL A605 99 Servic Klisa acta e BEE oe a Rees 43 5 7 22 A605 9 S rvice KE a xaran eoe eee ere T ra dettes 43 5 73 Tools t0 RUSA A EE ERTEN 43 5 7 4 Preparation to service A605 selectater iii 43 5 7 5 EIERE EEN ARE Romer ked cies dede r re Pan duree au dde agree Peri RS den ewe s Key d 44 5 7 6 Calibration of AGO5 Selectatec iii nn An nt y ye Zeg dree A6 5 8 FloWmeterS ALE ai deer c vi V r E EE 46 5 8 1 5047 99 Servic
10. if fitted is independent of the device and is not considered a hypoxic gas It cannot dilute the mixture to less than 2196 oxygen flow A needle valve is located behind each of the oxygen and nitrous oxide control knobs Each of the needle valves may be depressed by a brass arm which in turn operates a control lever When the control knob is closed this depresses the lever which in turn depresses the needle valve thereby closing it If the oxygen knob is opened the lever behind the nitrous oxide knob continues to block the nitrous oxide needle valve As the nitrous oxide control is opened the needle valve will only open as far as the oxygen lever will allow it The nitrous oxide knob is only capable of controlling the arm above the nitrous oxide needle valve whereas the oxygen arm is capable of controlling the oxygen needle valve as well as the nitrous oxide valve This means that when the oxygen control is closed it automatically closes the flow of nitrous oxide The distance from the fulcrum point of the oxygen arm to the oxygen needle valve is 1 3 the distance from the fulcrum point of the same arm to the nitrous oxide needle valve This ensures that as oxygen is closed the flow of nitrous oxide is also closed in a ratio of 1 3 Due to differences in gas densities and machining tolerances the second stage regulators are used to achieve the final desired settings WARNING The anti hypoxic device cannot recognise or differentiate betw
11. 2 Tools to be used Flat Screwdriver 12 Spanner 5 8 Spanner 10mm spanner Silicone grease Molykote 111 Allen key 8mm and 4mm Calliper O 150mm 5 4 3 Preparation to service A3055 oxygen failure alarm En EO s Make sure that the anaesthetic machine is OFF Remove gas cylinders from the back of the machine Remove medical gas supply piping lines from the back of the machine Remove rear plastic cover using 8mm Allen key supplied with machine Disconnect tubing from A6055 Oxygen Failure Alarm Signet 615 Service Manual xygen Figure 12 Location of A6055 Oxygen Failure Alarm on Anaesthetic machine 5 4 4 Service Procedure Refer to Figure 14 First remove the A6055 Oxygen Failure Alarm from the Pneumatic Bracket Assembly A706 To do this unscrew the two screws use a flat screwdriver which are located under the bracket See Figure 13 Once we have the A6055 valve we must proceed to disassemble one side at a time to prevent mixing of components Using a pencil or permanent marker number each of the four brass sections in the A6055 assembly and note their orientation with respect to each other This will reduce the chance of a mistake during reassembly Figure 13 Screws to assemble A3055 on workstation 1 Replacement on N20 side This is rep
12. 3 Remove medical gas supply piping lines from the back of the machine 43 Signet 615 Service Manual xygen Knob Air Knob N20 Knob Figure 25 Location of A605 Selectatec on Anaesthetic machine 5 7 5 Service Procedure The Selectatec A605 has 4 identical sub assemblies along its body therefore they contain same components that need replacement Figure 26 shows an exploded view of one of these subassemblies Using the A605 99 service kit the individual springs washers and O rings inside the Selectatec actuator housing can be replaced This is a delicate procedure described below Ulco recommends that service providers purchase the A605 9 kit which contains four complete actuator assemblies which have been tested by Ulco and may be simply screwed into the backbar This will reduce the time for service and the possibility of introducing leaks to the system Old actuator housings can then be serviced off line or returned to Ulco for refurbishment 44 Signet 615 Service Manual A6051 SM0412B J Figure 26 Components to replace in Selectatec A605 Removal of components to be serviced from A605 a Remove A30462 Actuator Housing To do this use a 14mm socket and socket wrench b Once A30462 is out p
13. 6 1 Scavenging Block A7027 aeo SMO608G LA N as A70271 CN51618P WALL SUCTION CONNECTOR 9 5mm BALL A60272 A FLOW TUBE O OR5006 OR5011 FILTER SILENCER A502743 A5027311 di md FLOW CONTROL Figure 34 Assembly drawing of scavenge block A filter silencer is fitted to the flow tube in order to reduce noise and prevent dirt and particle contamination of the Suction system 53 Signet 615 Service Manual The filter silencer may be replaced when ever it is required by inserting an Allen Key into the base of the filter silencer and unscrewing it from the flow tube Use only the ULCO recommended replacement filter silencer No responsibility is accepted for loss of suction if the incorrect filter is used 6 2 Sub assembly fresh gas non return Valve A6042 FITO25 A 5 X INTEGRUS D Oo ES M o o an EE i k Ss Sg CN O CO T L L1 Figure 35 Assembly drawing of fresh gas non return valve 54 Signet 615 Service Manual Selectatec Assembly A605 6 3 acl VOWS 25094 210590 609v 019809048 929v0 v vr 10S3Ll 7 1 ve
14. Interval in Qty Service Part No Months Procedure 1 Anti Hypoxic device 12 1 5 6 AHD60 99 AHD60 2 Rotameter 5 Tube A5047 12 1 5 8 A5047 99 3 Selectatec Block A605 12 1 5 7 A605 99 or A605 9 4 Regulator Primary RG1 12 3 5 2 RG1 99 5 Regulator Secondary 12 2 5 6 RO7 99 RO7 1 6 Ventilator Cutoff A6056 12 1 5 5 A3056 99 7 Oxygen Failure Alarm 12 1 5 4 A3055 99 A6055 8 Manifolds A6072 A6073 12 3 5 2 A3057 99 A6074 9 Patient Block A7085 12 1 5 11 A307 99 10 Scavenge Block A7027 12 1 5 10 A3027 99 11 Signet 615 Service kit 12 1 A600 99 includes all gas supply system service kits 1 10 4 8 Tools The following table details special tools which may be ordered from Ulco Part Number Regulator spanner RG1 SP System pressure gauge AB500S Circuit pressure manometer AB500 In addition the following commonly available tools are required to complete most of the service procedures in this manual Oxygen analyser Trim tool small flat blade screwdriver or similar Phillips head screwdriver Voltage meter accuracy lt 1 mvolt Long nose pliers Metric Allen key set 22 Signet 615 Service Manual 5 Service of the Gas Supply System
15. Ki a o Uo a Ip R i ova 3 31IH 3 i A n HN 1 ra az SES GE n 91 008 a Li as 2v18 9 NOTAN b gt 009 Signet 615 Service Manual 59 001 w Ott SC 2059 008 He H vio NAJO GVD DALIA O Figure 40 Ventilator interconnections E bel o E e en 9 EI O o c c e oO x s P Xx E c 5 gt 6 7 Signet 615 Service Manual V UU TV dz 13905 931 JIYA E 4 x 13908 JJl IN Z NA AP ean o SELOLV Oc8dv 5 xO HOLIMS AYNNSOIONSA LAINI HMOd Im E m a N V leal o F roe SE m AlddNS OV anya m 3 yan nnn xw n E lane mm fa B 1 ID ON ON M sn P us 3AWO39 Cr A aA 75 A s CE C 3 9031 Ve sos al 23 pon pa asm gi 5 La o e OS 4dV 3 p 5 Ald 30IS TWNYSLXS m 2 Z 5 Qavog SAMOA TVNATINI 0S8dV gt e SCHEME zi o EV 3 re a E pum 5 Lu 6 8 Figure 41 Signet Power Distribution 60 Signet 615 Service Manual 6 9 Frame Drawings B A70112 PICTORIAL VIEW A6012 Figure 42 A701 BASE ASSEMBLY 61
16. Note Bodok seals must be examined and replaced if necessary every time the cylinders are replaced Refer to Section 5 2 for calibration instructions 3 3 8 Second stage regulators There are two second stage regulators fitted one each for the oxygen and nitrous oxide supplies These regulators are situated down stream from the anti hypoxic device and flowmeter assembly They are used to calibrate and fine tune the anti hypoxic device See separate instructions The second stage regulators are also used as a buffer to protect the anti hypoxic device against any pressure fluctuations that may occur in both the pipeline and the cylinder regulated pressure Pipeline pressure 415 kPa Cylinder regulated pressure 350 370 kPa Signet 615 Service Manual Second stage regulator pressures when set to deliver the correct mixtures on the anti hypoxic device are usually less than 220 kPa This allows for fluctuations in supply pressure of more than 100 kPa before the set flows are affected These regulators are serviced as part of the service and calibration of the anti hypoxic device described in section 5 6 3 3 9 Pressure gauges Pressure gauges are well placed at eye level for ease of viewing The left 3 show pipeline pressure while the right 3 show the pressure in the reserve gas cylinders A simple visible indicator called the Visiwink is mounted below the ON OFF control When
17. Replace o rings OR 5014 and OR 50128 and smear them with silicone grease Molykote 111 Reassemble flow tubes front and back screen and finally put on the top block A60473 Ensure that the notch on the outer tubes are oriented correctly to the side where the connections to the sides containing the flow outlets on the anti hypoxic block Screw the 4 screws SMO430P with a Philips screwdriver Install the AHD6O into the machine by screwing the M6 bolts on the back of the AHD6O anti hypoxic device See Figure 21 Screw the nut NI38P by using a 9 16 spanner See Figure 22 Put the knobs and then screw the grub screws for each knob by using a flat screwdriver Signet 615 Service Manual AHD611 BOTTOM BLOCK FLOWMETER UR S01eS 0R 51148 A504 70 N T N20 LOW FLOW FLOWMETER A50471 OUTER LOW FLOW TUBE 460473 TOP BLOCK _ FLOWMETER Figure 23 Components to be removed from AHD60 Flow meter h Connect electrical cable from back light to AHD60 i Connect the tubing to the AHD60 anti hypoxic device 5 Replacement of components to be serviced on RO7 regulator Refer to Figure 21 and Figure 24 b Disconnect tubing of each RO7 regulator Unscrew the nut that holds the RO7 to the anaesthesia workstation Remove the RO7 regulator from the workstation Unscrew the nut of the RO7 regulator by using the adjustable wrench Replace diaphragm assembly and nylon washer Unscrew poppet valv
18. STAGE SC O u O cw 9 w n s D REGULATORS de DD Jet en el WOR D GJ E e y N rd ku wa Ld H d bd E H L D JJ se ea i V Figure 4 Rear view of gas supply system 23 Signet 615 Service Manual 5 2 Gas manifolds A6072 A6073 and A6074 The gas manifold is at the rear of the machine Bodok seals RG204 should be checked for damage every time new cylinders are fitted 5 2 1 A3057 99 Service kit Got OR 5005 O ring 3 off OR 5006 O ring 3 off OR 5013 O ring 12 off RG205 Dowty seal 3 off RG204 Bodok seal 5 2 2 Tools to be used 16mm spanner Silicone grease Molykote 111 Allen key 4mm 5 2 3 Preparation to service A607X manifolds 1 Make sure that the anaesthetic machine is OFF 2 Remove gas cylinders from the back of the machine 3 Remove medical gas supply piping lines from the back of the machine RG1 for AIR RGI for Ne R amp 1 for Oxygen A6074 TX 7085 I er A EQ Figure 5 Location of A607X Manifolds on Anaesthetic machine 5 2 4 Service Procedure To service the manifolds we must follow Figure 6 1 Replacement of RG205 Dowty Seal and O ring OR 5006 on test poi
19. anaesthetist Having passed through the vaporiser the gas mixture now combined with the anaesthetic agent again enters the back bar and is delivered to the patient as described previously See the vaporiser manual for further details The flowmeters are replaced on defect only See section 5 8 for replacement instructions 3 3 3 Vaporisers Various methods of mounting vaporisers are currently used such as the off line or fixed systems The most common is the Selectatec type mounting system in which a mounting block is permanently attached to the back bar and the vaporiser is locked on by means of DZUS aircraft type quick release fastener Gas flow is diverted through the vaporiser via the ports when the Vaporiser is placed on the mounting block The Selectatec system allows for interchange ability of vaporiser s either for the use of an alternate volatile agent or for maintenance and servicing as well as rendering the machine vapour free if necessary Vaporisers can be easily mounted on the back bar via the Selectatec mounting and should be securely locked into place Vaporisers not attached to the anaesthesia machine must be prevented from tipping over Storage racks are available to store unused vaporisers Vaporisers should be emptied prior to being moved Note It is important to read the relevant instruction manual issued with each vaporiser prior to use 3 3 4 Patient Block The patient block is
20. be replaced by removing this fitting FITOO7 use a 16mm spanner for it Then proceed to reassemble it The Dowty seal RG205 along the gas connector A605611 is harder to replace The only was is by removing the whole manifold from the console and to do this remove the yoke bar assembly A60753 and A60752 and only then unscrew the bolts that keep the manifold assembled to the console Once the above is done unscrew the gas connector A605611 and replace the RG205 Dowty seal Reassemble into the console and it is ready to be tested 5 2 5 Test of A607X manifolds 1 Preparation a Puta test gauge on the test point b Connectthe correspondent cylinder gas to the anaesthetic machine not the medical gas supply pipelines from the walls We must read 360 kPa in the test gauge c Checkthat there is no leak around manifold d Disconnect cylinder gas and connect the correspondent medical gas supply from the wall pipelines We must read 450 kPa which is the pressure from the wall pipelines e Checkthat there is no leak around the manifold f Connect correspondent cylinder gas and test gauge must still read 450 kPa 25 Signet 615 Service Manual TEST GAUGE Figure 7 Location of test gauge for calibrating primary regulators 5 3 First Stage Regulators RG1 The regulator and yoke are assembled in lin
21. end the subassembly which contain the parts to be serviced d Replace spring AHD143 and o rings OR 5006 and OR 5012 Smear o rings with silicone grease Molykote 111 e Reassemble the subassembly into the AHD60 anti hypoxic device f Screw nut NI38P and finally the air knob AC32221 3 Replacement of o rings from the flow meter or the flow meter tubes we must remove the AHD60 from the anaesthesia workstation Refer to Figure 21 and Figure 22 Remove the tubes and electrical cable to back light from the AHD60 anti hypoxic device Remove the four M6 screws by using a 5mm Allen key Unscrew grub screws from the three knobs in front of machine by using a flat screwdriver Remove the knobs and then remove the nuts NI38P by using a 9 16 spanner Remove the AHD60 from the back of the workstation oeoco 39 Signet 615 Service Manual Figure 21 Location of AHD60 Anti hypoxic device and RO7 regulators NI38P Nut p A p m Figure 22 Knobs on front of AHD60 Anti hypoxic device 4 Service of o rings OR 5012S and OR 5014 from AHD6O flow meter Refer to Figure 23 40 e e 9 e 20 Remove the screws SMO430P from the top of AHD60 flow meter by using a Philips screwdriver Remove the top block A60473 by pulling it out Remove the front and back screen of AHD60 flow meter Remove flow tubes
22. spanner unscrew the nut A305512 then by using the spanner unscrew the stud A305511 and remove o ring OR 5011 and spring A305513 By using needle nose pliers remove the spool A305514 and then replace its o rings OR 5006 and OR 5007 smear them with silicone grease Molykote 111 Reassemble A305514 spool with its new o rings and then new spring A305513 and new o ring OR 5011 smeared with Silicone grease Molykote 111 Finally install stud A305511 and leave its nut A305512 loose ready for calibration Put this assembly back in the machine Figure 17 Components to replace in A6056 Ventilator Cut Off 2 To service the Ventilator Drive Valve AGO56X we must follow Figure 18 a b Remove IROO1 Oxygen Index Ring by using a pair of multigrips taken care not to damage its surface To prevent scratching the surface of the ring Ulco suggests taping the teeth of the multigrips Once we remove IROO1 we need to use two 1 4 BSP nuts so we can unscrew the Gas Connector A605611 Once this A605611 gas connector is unscrewed we can proceed to remove the non return valve A605612 o ring OR 5006 and spring A3056121 Replace o ring OR 5006 and smear it only o ring with silicone grease Molykote 111 Reassemble A3056121 new replaced spring new OR 5006 non return valve A605612 and gas connector A605611 Use a multigrip tool Finally with the multigrip tool assemble the Oxygen Index Ring IROO1 35
23. the last gas inlet on the right of the gas manifold Air or oxygen drive are optional The ventilator drive gas inlet is supplied with the correct gas hose and ring index for the drive gas specified e g Oxygen Note that the ventilator silencer is connected to the back of the ventilator and that the 30mm male scavenging outlet is on the top of the exhaust Further information regarding the operation of the EV500 ventilator can be found in its user manual 3 6 Soda ime absorber The soda lime absorber mount bracket attaches to the post towards the front of the machine The absorber mount sits over the upright and should be allowed to seat itself into position The top locking screw and side 16 Signet 615 Service Manual locking screw can then be fastened to hold in position The exhaust hose can then be attached to the 30mm exhaust valve scavenging outlet The absorber fresh gas hose from the common gas outlet can now be connected to the fresh gas inlet on the side of the absorber This connection hose is made from strong reinforced hose so it will not perish No latex tubing is used in Ulco machines Further information regarding the operation of the absorber can be found in its user manual 3 7 Other accessories Suction apparatus A mounting exists which accepts a special swivel bracket that supports the suction receivers from Abbott or other similar brands The bracket is an optional item and can be ordered direct from U
24. to Figure 21 and Figure 22 a Remove the tubes and electrical cable to back light from the AHD6O anti hypoxic device b Remove the four M6 screws by using a 5mm Allen key c Unscrew grub screws from the three knobs in front of machine by using a flat screwdriver d Remove the knobs and then remove the nuts NI38P by using a 9 16 spanner e Remove the AHD60 from the back of the workstation 2 Service of o rings OR 5012S and OR 5014 from AHDOO flow meter Refer to Figure 23 Remove the screws SMO430P from the top of AHD60 flow meter by using a Philips screwdriver Remove the top block A60473 by pulling it out Remove the front and back screen of AHD60 flow meter Remove flow tubes Replace o rings OR 5014 and OR 5012S and smear them with silicone grease Molykote 111 oococo Signet 615 Service Manual f Reassemble flow tubes front and back screen and finally put on the top block A60473 Ensure that the notch on the outer tubes are oriented correctly to the side where the connections to the sides containing the flow outlets on the anti hypoxic block g Screw the 4 screws SMO430P with a Philips screwdriver h Install the AHD6O into the machine by screwing the M6 bolts on the back of the AHD6O anti hypoxic device See Figure 21 i Screw the nut NI38P by using a 9 16 spanner See Figure 22 j Put the knobs and then screw the grub screws for each knob by using a flat screwdriver k Connect electrical cable from ba
25. 012 and OR 5113S and smear them with silicone grease Molykote 111 h Install subassembly g into body A6051 and then fix it into it by using screw SMO412B and a 2 5mm Allen key 5 7 6 Calibration of A605 Selectatec a Connect the cylinder gases N20 and Oxygen to the anaesthetic machine not the medical gas supply pipelines from the walls Put a manometer on the fresh gas outlet of the patient block Switch ON the anaesthetic machine d Open fully on the anti hypoxic device the N20 knob and set a flow of approximately 0 1 litre min of oxygen e The manometer will show some pressure and then make sure the AGO5 selectatec doesn t leak To check this we can use some leak detector spray or soapy water 5 8 Flowmeters A5047 5 8 1 5047 99 Service kit 2 off OR 5110S O ring 10 off OR 5114S O ring 5 8 2 Tools to be used 8mm 5 mm and 3mm Allen keys Philips screwdriver Flat screwdriver 42 and 9 16 spanner Adjustable wrench Grease Dupont Krytox GPL 205 oc 5 8 3 Preparation to service A5047 flowmeters 1 Make sure that the anaesthetic machine is OFF 2 Remove gas oylinders from the back of the machine 3 Remove medical gas supply piping lines from the back of the machine 4 Remove rear plastic cover using 8mm Allen key supplied with machine 5 8 4 Service Procedure 1 Replacement of o rings from the flow meter or the flow meter tubes we must remove the AHD60 from the anaesthesia workstation Refer
26. 02721 FILTER SILENCER TT A302732 UR 5006 Ga UR 501 CD A302743 S11814G An ci b A302731 Figure 29 Components to replace in Scavenger A7027 1 Replacement of o rings OR 5006 and OR 5011 Remove grub screw SI1814G by using a 1 5mm Allen key Once the grub screw is out knob A302731 will comes out Remove A302743 needle bush by using a 9 16 spanner Once the A303743 needle bush is removed the needle A302732 can be removed Replace o ring OR 5006 and assemble into needle A302732 and smear them it silicone grease Molykote 111 f Reassemble the needle A302732 needle bush A302743 and o ring OR 5011 with silicone grease Molykote 111 into scavenge body g Screw them into body by using a 9 16 spanner for it h Finally reassemble the knob A302731 and grub screw SI1814G by using a 1 5mm Allen key 2 9 g9 5 10 5Test of A7027 scavenger 1 Preparation a Connect the scavenger block to the vacuum line of wall b When the knob is fully opened the ball must be around the white line mark on the scavenge tube 5 11 Patient Block A6085 5 11 1A307 99 Service kit 1 off OR 5007 O ring Must be Viton material 1 off OR 5006 O ring 1 off A3056121 Spring 5 11 2Tools to be used 2 spanner 11mm spanner 49 Signet 615 Service Manual Silicone grease Molykote 111 Allen key 4 mm Long nose pliers 5 11 3Preparation to service A
27. 11 16 and then remove washer RG1021 d Replace washer and cartridge and reassemble First the washer RG1021 and then the cartridge RG102 There is no need to put any oxygen tape to cartridge RG102 e Unscrew the adjustment grub screw RG1061 to reset the regulator pressure f Assemble top cap RG106 by using RG110 spanner b Oring OR 021 5 spring RG10511 and Dowty seals RG205 along bolt RG206 This section should only be performed if a leak is present between the cylinder and the regulator a Unscrew RG206 bolt from the bottom of the console by using a 5 8 socket Figure 9 b Remove the RG1 regulator by pulling it upwards from its base RG201 c With the calliper measure the distance between the grub screw RG10512 to the body of the regulator RG101 This is important because this was set up during prior assembly which will give us approximately the blow off pressure of 600 kPa d Unscrew the grub screw RG10512 use 4mm Allen key By doing this remove the spring RG10511 and the blow off valve RG1051 e Replace the o ring OR 021 5 from blow off valve RG1051 and apply grease Dupont Krytox GPL 205 f Remove any remaining oxygen tape from grub screw RG10512 and then re tape it with new oxygen tape g Place the blow off valve RG1051 o ring OR 021 5 and spring RG10511 in its cavity and then screw the grub screw RG10512 use 4mm Allen key to the distance previously measured use calliper fort it h Replace Dowty seals RG205 an
28. 3 4 3 Auxiliary Power Outlets The Signet mains power supply is switched by the main front panel on off switch and is then distributed to 5 IEC outlets mounted internally in the rear of the machine One of the outlets is used to power the electro luminescent backlight for the flow tubes one is allocated to power the external outlet in the side of the machine and the other 3 are available to power additional options such as monitors and ventilators These outlets can only be accessed by removing the rear cover they should only be used with equipment supplied by Ulco in order to ensure compliance with the relevant electrical safety standards IEC 60601 1 1 One external IEC outlet is mounted in the side strip of the machine for use in powering vaporisers The Signet has been safety tested in conjunction with TEC 4 Desflurane vaporisers only If a flexible external outlet solution is required the APB7O 4 outlet power board may be purchased as an option but system testing to the safety standard will become the responsibility of the purchaser 3 5 Ventilator The ventilator can be mounted to the left hand upright of the machine The ventilator mount fits into the bracket All parts can be tightened into position with locking screws The base plate is fitted to the mount and the ventilator is then secured to the base plate with the four nylon screws supplied The ventilator drive hose can then be connected The drive gas connection for the ventilator is
29. 7085 patient block Make sure that the anaesthetic machine is OFF Remove gas cylinders from the back of the machine Remove medical gas supply piping lines from the back of the machine Remove tubes attached to patient block and remove patient block from workstation PONE A7085 Patient Block Figure 30 Location of A7085 Patient Block on Anaesthetic machine 5 11 4Service Procedure To service the patient block follow Figure 31 1 Replacement of o rings OR 5006 OR 5007 and spring A3056121 a Remove the spring retainer A307135 by using a 2 spanner b Once the spring retainer is out the spring A3056121 will come out c To remove spool A307 134 pull it gently with a pair of long nose pliers through the hole underneath the patient block 50 Signet 615 Service Manual A307133 a AN yo CQ SS Y A60851 OR 5006 A307134 dU d K O Ny SS OR 5007 s 3056121 g d E 307135 K 7 Et Figure 31 Components to replace in Patient Block A7085 After removing the spool A307134 replace o rings OR 5006 and OR 5007 viton a red O ring and smear them with silicone grease Molykote 111 e Reassemble the spool A307134 and by pushing it back into the patient block f Reassemble the spring A3056121 and spring retainer A307135 by using
30. Aa Kilohertz KHz as Gigahertz GHz Megahertz MHz ERE Millimetres mm Pressure alrWay s es ise ieiuna ci ege anas rexit eara eege centimetres of water cmH20 Pressure HISA ionic ee eo reete in reri oi Kilopascals kPa Moz SE iia aa Ed Volts V W lgil bayan sens cir darse cards di kawa n n Kilograms kg 2 Workstation Overview Anaesthesia machines such as the Signet 615 are engineered to very high standards of design and finish and all units are able to accommodate the most comprehensive specifications required in modern anaesthesia Ulco machines are manufactured from non ferrous materials such as stainless steel anodised aluminium and chromed brass or acetal with moulded covers made from Kydex The construction of the frames provides a stable and unobstructed unit for the mounting of a wide range of anaesthesia equipment accessories The Signet 615 can be easily upgraded from its basic configuration with optional accessories and attachments including a full range of patient monitors to provide a comprehensive anaesthesia workstation If equipment that has not been specifically designed or supplied by Ulco is to be attached to the Ulco machine it is recommended that customers consult Ulco as to the suitability of the equipment and necessary modifications to the apparatus Ulco and its agents provide a comprehensive regular maintenance service and it is recommended that advantage b
31. CE mirad css mik ab Cegedel n k k ak E la dinal al ka eel dika eee Wira n l leases S RE HEWAY 14 3 3 6 GAS manii EE 14 3 3 7 MAIN E e 14 KOCH Mee 14 3 3 9 NIE 15 IS ELE 15 3 3 11 Auxiliary Oxygen Outlet EE 15 3 3 12 Pipeline Hose Assemblies n mi rer re reunieron nt seba Wala ii kae ck Eae e 15 3 3 43 Oxygen failure Warning DEVICE scort arras dek kaka iei dea xwel H ka ca eur da aene id 15 3 4 egen EE 16 3 4 1 EE 16 3 4 2 Serviceable Parts E 16 3 4 3 Auxiliary Power Outlets ioi ceteri nnt ncn n n pay kak cue en EREY A na DL WER EKE Ra EVA DER HEWE REW 16 S MMA d pcmE Na 16 de ME oou nrE ocenIld da tags 16 Bul Other accessories tree i den tern i rns dta duane dures ete Eegeregie du 17 3 8 Accessory POWET E 17 4 Servicing Overview inciso 19 4 1 Warnings and CautioNS visi een inne dik selk kunek o Ras teen 19 4 2 Responsibilities of Service Personnel sise 19 DS UN dE 19 4 3 1 Bill Ce TEE 19 4 3 2 Electrica PRA E Droe D A A ipe ttle n n E 19 4 3 3 Contamina tO WEE 19 4 4 Preparation and Completion of Service 19 4 4 1 Prepara MN say eee de e ka ve ela xe ka di EE 19 4 4 2 Removing the rear access panels sise 20 4 43 CAMEL Sel VIC EE 21 4 5 General Servicing and Information sise 21 EN 22 4 7 Spare Parts Ser
32. Open fully on the Anti hypoxic device the N20 knob and set a flow of approximately O 1 litre min of oxygen Put the manometer on the oxygen test point as per Figure 15 TEST GAUGE Figure 15 Test Gauge in Workstation 2 3 Set up of operation of Oxygen Failure Alarm see Figure 15 a With oxygen pressure between 220 to 230 kPa and a flow of oxygen of 0 1 litre min adjust screw A305541 until whistle operates To do this first unlock nut A305512 oxygen side use spanner 5 8 and then adjust A305541 One a clear sound is achieve lock A305541 stud and A305512 nut Return pressure of oxygen to 250 kPa whistle must stop Gradually reduce oxygen pressure to 220 230 kPa the N20 flow must stop and whistle must sound clearly for a minimum of 7 seconds To get the sound of whistle we desire unlock the nut NU M6 use 10mm spanner and adjust by using a flat screwdriver the A305521 needle so once the sound is set we lock it in that position Finally return oxygen pressure to 360 kPa which is the pressure required by the RG1 regulator in the workstation Set up of the Nitrous Oxide Cutoff a b By using the test gauge and an Allen key 4mm adjust RG1 for oxygen to reduce pressure to about 220 to 230 kPa Adjust stud A305511 use Y spanner until the N20 flow stops see the N20 flowmeter front of workstation Lock this position with nut A305512 use 5 8
33. a 2 spanner 2 Remove the defeat button housing and clean the pressure relief device components If necessary lap the seat of the pressure relief device procedure TBD 5 11 5Test of A7085 patient block 1 Preparation a Connect medical gas supply to the machine b Check that the patient block does not leak with a leak detector spray or soapy water C Press the oxygen flush button and depress then check again that it does not leak 51 Signet 615 Service Manual Defeat Button Housing Figure 32 50 cmH20 Safety Valve on Patient Block Refer to Figure 32 2 Calibration a Place manometer on Fresh Gas Outlet b Set O2 to 1 L min c Occlude manometer Safety valve should blow off at 50 2cm H20 d Remove the defeat button housing by unscrewing with a pair of soft jaw grips e Adjust the valve setting with a large flat blade screw driver see Figure 33 Calibration Screw Figure 33 Safety Valve with Defeat Button Housing removed f Set O2 at 100ml Should obtain a reading greater than 40cm H20 52 Signet 615 Service Manual 6 Assembly Drawings The following assembly drawings are included to enable user and service personnel to identify parts and assemblies for servicing and maintenance requirements Included are gt Scavenging Block Sub assembly fresh gas non return valve Selectatec Sub assembly ventilator cut off valve Patient block VV ON WV
34. a 4mm Allen key as shown in Figure 3 20 Signet 615 Service Manual i isis Remove four screws MM Figure 3 Rear metal cover 4 4 3 After Service Anaesthesia Equipment should be tested according to Ulco s recommended procedures and a service sticker signed off by a certified technician before releasing the machine into operation Test and calibration procedures for all serviceable items are to be found in Section 5 of this manual After servicing any item a full Level 1 check of the machine should be performed The procedure for performing the Level 1 check is available from Ulco document QA SERVICE A600 Similarly the test record sheet for this procedure is available as FM75 50 4 5 General Servicing and Information ULCO recommend twelve monthly service periods This should include the change over of all service kits for critical assemblies In addition to regular servicing of the equipment ULCO also recommends that performance and calibration tests are carried out as often as necessary but at minimum every six months Signet 615 Service Manual 4 6 Seals All seals on high pressure components such as the first stage regulators must be lightly greased with Krytox or similar grease certified safe for use in high pressure oxygen environments Low pressure components in the patient airway may use standard silicone greases 4 7 Spare Parts amp Service Intervals Item No Product
35. al Before removing any of the machines covers the power cord must be detached from the mains supply in order to prevent the possibility of electric shock 3 3 Contamination A bacterial filter should be used to prevent contamination of anaesthesia equipment A Preparation and Completion of Service 4 1 Preparation Anaesthesia equipment should be cleaned and sterilized Genuine ULCO spare parts for all critical assemblies should be available Read the section of this manual appropriate to the service procedure to be performed Procedures for servicing the gas supply system are to be found in Section 5 of this manual It is recommended that a leak test be performed on the system prior to performing any service procedures in order to determine that the machine is in an acceptable state before the service Then if any new leaks are introduced to the system during the service procedure they may be more quickly identified Signet 615 Service Manual 4 4 2 Removing the rear access panels Access to the bulk of the gas supply system is achieved by removing the rear plastic moulded cover by turning the single hex key retaining clip to free the cover as shown in Figure 2 Figure 2 Rear top cover of Signet 615 Access to the some of the gas supply system is achieved by removing the rear metal cover plate in the lower half of the machine This can be done by removing the four screws affixing the cover plate in place using
36. ck light to AHD6O L Connect the tubing to the AHD60 anti hypoxic device 5 9 Auxiliary Oxygen Outlet To replace the o ring OR 5007and Dowty seal RG205 unscrew the connector GCNOO2 from body A6025422 as shown in Figure 27 e a WO VZ72 NI 14P NUT 6025422 AUXILIARY BODY Sn A602541 AUXILIARY OXYGEN BRACKET R6605 DOWTY SEAL GCNO0 M DIAN CONNEC A N CONNECTOR GAS 1 4 BSP NON RETURN VALVE Figure 27 Exploded view of auxiliary oxygen outlet 5 10 Scavenge Block Assembly A7027 5 10 143027 99 Service kit 1 off OR 5011 O ring 1 off OR 5006 O ring 5 10 2Tools to be used 9 16 spanner Silicone grease Molykote 111 Allen key 1 5 mm Flat screwdriver 5 10 3Preparation to service A7027 manifolds 1 Make sure that the anaesthetic machine is OFF 2 Remove gas cylinders from the back of the machine 3 Remove medical gas supply piping lines from the back of the machine 47 Signet 615 Service Manual ec Yol Kr L Air Knolo A7027 xy gen Knok besi Figure 28 Location of A7027 Scavenger on Anaesthetic machine 5 10 4Service Procedure To service the scavenger we must follow Figure 29 48 Signet 615 Service Manual A70271 SCAVENGE BODY A6
37. d reassemble regulator 27 Signet 615 Service Manual C 28 Figure 9 Removal of RG206 bolt Dowty seal RG205 and Bodok seal RG204 along cylinder connector RG203 a b c d To replace the Bodok seal RG204 remove it from RG203 oylinder connector and replace with a new Bodok seal RG204 To replace the Dowty seals RG205 unscrew RG203 cylinder connector by using 11 16 socket Remove Dowty seals RG205 and replace them Finally screw the RG203 cylinder connector back no oxygen tape is needed Signet 615 Service Manual p dq eg purs Figure 10 Components of RG1 First Stage Regulator 5 3 5 Calibration of Post Serviced RG1 First Stage Regulators 1 Testofthe blow off pressure a b Connect a gas oylinder in the back of the machine and open its supply Ensure that the cylinder is full or near full Connect a test gauge manometer 1000 kPa to the connector of manifold connected to RG1 under test see Figure 11 By adjusting the grub screw RG1061 in top of regulator RG1 with 4mm Allen key set the pressure to 600 kPa At this pressure the blow off valve must be venting if it doesn t vent remove RG1 as described in Section a and unscrew the grub screw RG10512 which control the blow off valve until begin to exhaust at 600 kPa To check this reassemble the RG1 on its base RG201 and test it Turning the grub screw counter clockwise i e unscre
38. e taken for the safe and reliable upkeep of this equipment Refer to this service manual for details on how to maintain your Ulco machine There is a service contract included with the equipment please fill it in and return it to Ulco Customers requiring further service or advice with operating problems should contact Ulco or one of their accredited agents 2 1 Major features gt all working surfaces are designed to be easy to clean and front wheels are lockable to prevent unwanted movement gt A monitor shelf for mounting at the top of the machine is available as an option Y An aluminium accessory rail is fitted to the sides of the working area for easy attachment of many options Signet 615 Service Manual gt gt An absorber mounting post is mounted either on the left or right hand side of the machine allowing the absorber to be swapped from side to side Optional internally mounted mains outlets used for supplying power to optional accessories compliant with IEC 60601 1 1 One mains outlet mounted on the side of the machine for use with powered vaporisers 2 2 Overall strengths 2 3 10 gt gt gt sturdy strong durable and easy to understand construction high quality and quantity of patient safety features pure flexibility of design allowing tailoring of options to exact requirements Typical configuration VV VV ON ON ON ON ON ON ON WV Signet 615 3 gas 5 Tube machine fitted wi
39. e holder with a Philips screwdriver Reassemble everything and put it back into the anaesthesia workstation Reconnect tubing to RO7 regulators gt ta e o o 41 Signet 615 Service Manual _ Top Cap Regulator PS E gt asher NS ZA gU N 1 Diaphragm NM Assembly A d Poppet Valve Base Regulator Figure 24 Exploded view of RO7 Regulator 5 6 6 Test of AHD60 anti hypoxic device 1 Preparation Connect medical gas supply to the machine Connect a manometer on the fresh gas outlet of patient block Switch ON the anaesthetic machine Unscrew the NI 18P nuts from the back of AHD60 anti hypoxic device by using a 42 spanner Unscrew both AHD141 bodies fully papo 2 Calibration of Anti hypoxic device Zero both second stage regulators by unscrewing their adjustment caps completely Open Oxygen knob fully Close N20 knob fully Adjust N20 RO7 second stage regulator to maximum pressure Adjust oxygen RO7 second stage regulator to zero no flow Screw N20 AHD141 body until flow drops to zero Check if there is any leak with the manometer in the patient fresh gas outlet Open N20 knob fully Close oxygen knob fully Adjust N20 RO7 second stage regulator to zero no flow Adjust oxygen RO7 second stage regulator to maximum pressure Screw oxygen AHD141 body until flow drops to zero Check if there is any leak with the manometer in th
40. e kt keete ea Huda kl adc c diva dava toc a k o d ev ya daa ya V k b we kelk ki 46 5 8 2 Tools to be sed L da lsa la reete kaya aka suya ka Kak i a ie fr Ne Fede ene KKS 46 5 8 3 Preparation to service A5047 flowmeters iii 46 8 4 Service Procedure dc ia 46 DS Auxiliary Oxygen Outlet 5e mimi y ra yeke keran Deya bey keyan a EKS hua katiha kasma kana nn vk k ve enr kuve te 47 5 10 Scavenge Block Assembly A7O27 NEEN 47 5071 A3027 99 Service E 47 5 10 2 Tools to be USE wa mico bikm las erre kuin kane ka ak kaka kk sj xewa EREECHEN SWE Kuye YAY 47 5 10 3 Preparation to service A7027 manifolds issu 47 5 104 lt Service Procedure EE 48 b 10 b Test of A7O27 Savei o aeon de dee k na k k deb YA Kake V k 49 5 11 Patient BIOCK AGO8 5 4 k M edi eU ente in ic Hle ete iie eie derent 49 5 111 A307 99 S6rvice kit soe e diu mco tg eb n ene 49 SAEZ E OIS TO DO US iii sant ne etin iren Vu sk k d tena ee Dh rai e beleke E 49 5 11 3 Preparation to service A7085 patient block is 50 5 11 4 Service Proc dures asser re enn kek kw V k ci 50 DL TestofA7085 patient Bleck 23e n nd dea dd Eee cde cae deka ba dak d k MA ius dara dece RE Ba rey de ekl 51 Assembly Ru 53 6 1 Scavenging Block ATO2 7 s pi sas xak dla d e EE dees Tera ttes da eene enhn Gd Ee dadena ke Res d k dew y K k Y K 53 6 2 Sub assembly fresh gas non return Valve A6042 kk kk kk kk kk k ke kk Ka KA kk KA KA nennen 54 6 3 Sel
41. e patient fresh gas outlet Do not screw the body too far only tighten sufficiently to achieve zero flow and no further e e e ss a oO 42 Signet 615 Service Manual 5 7 Open oxygen knob 3 full turns then adjust the flow to 10 litre min by adjusting the oxygen RO7 second stage regulator Once this is achieved lock the regulator at this position Set oxygen flow to 2 litre min by using the oxygen knob Set the N20 flow to 6 litre min by using the RO7 second stage regulator The N20 control knob must be fully opened Check the ratios across the entire range of flows Check the 1 3 ratio if it is not correct then screw gently the N20 AHD141 body and increase pressure with N20 RO7 second stage regulator until the correct flow is achieved on whole scale For correct ratio read use an oxygen analyser for final calibration It must read more than 22 of oxygen Selectatec Assembly A605 5 7 1 A605 99 Service kit 4 off A304622 Spring 4 off A304626 Spring 4 off OR 5113S O ring 4 off A304623 Washer 8 off A304625 Ballsert 4 off OR 5020 O ring 4 off OR 5014 O ring 4 off OR 5012 O ring 5 7 2 A605 9 Service kit 4 off A30462 Actuator 5 7 3 Tools to be used 14mm spanner and socket wrench Silicone grease Molykote 111 Allen key 2 5mm Knife Pair of tweezers 5 7 4 Preparation to service A605 selectatec 1 Make sure that the anaesthetic machine is OFF 2 Remove gas cylinders from the back of the machine
42. e to reduce the risk of high pressure leaks The brass yoke bolt RG203 has the Bodok seal RG204 attached to it and is fitted with a sintered bronze filter RG2031 Bodok seals must be examined and replaced if necessary every time the cylinders are replaced 5 3 1 RG1 99 Service Kit 1 off RG102 Cartridge and Washer ToffRG10511 Spring 1 off ORO21 5 O ring 1 off RG103 Diaphragm 4 off RG205 Dowty seal 1 off RG204 Bodok seal 5 3 2 Tools to be used RG110 spanner Socket 11 16 Socket 5 8 Allen key 4mm Allen key 8mm Socket wrench Oxygen tape Grease Dupont Krytox GPL 205 Calliper O 150mm 5 3 3 Preparation to service RG1 regulators Make sure that the anaesthetic machine is OFF Remove gas cylinders from the back of the machine Remove medical gas supply piping lines from the back of the machine Remove rear plastic cover using 8mm Allen key supplied with machine ONE Signet 615 Service Manual f Figure 8 Location of RG1 Regulators on Signet 615 machine 5 3 4 Service Procedure Refer to Figure 10 a Cartridge RG102 diaphragm RG103 washer cartridge RG1021 a With the regulator assembled to its base in the workstation proceed to remove the top cap of regulator RG106 Use the RG110 spanner for it b Remove diaphragm RG103 c Unscrew cartridge RG102 by using a socket
43. ectatec Assembly A6O0D sey nui s ra daa hare day diia odias 55 6 4 Manifold Block Assembly Oxy AGO 56 6 5 Patient Block A7085 axiv ey herla d e eere o Yeke ees d ees 57 6 6 Overall Schematic of Gas Control System 58 6 7 Ventilator Interconnection Diagramme 59 6 8 Electrical Power Distribution Circuit nennen nennen nennen nennen enne 60 G 9 Frame Drawigs EC E 61 This page intentionally left blank Signet 615 Service Manual 1 Introduction 1 1 About this manual This manual provides information for the preparation assembly and maintenance of the Signet 615 anaesthesia machine together with suitable equipment from the Ulco range Although this equipment has been carefully designed for simplicity of assembly and use it is recommended that the contents of this manual be studied before attempting preparation or maintenance of the equipment Explanatory diagrams are provided in order to help the reader understand the concepts described This service manual should be read in conjunction with the Signet 615 user manual and the manual s for the vaporisers and ventilator if attached 1 2 Qualifications for Servicing All personnel who service or repair Ulco products must have a current valid Ulco Training Certificate for the product being serviced or repaired 1 3 Units ETO D 55n Amperes A ale E Litres per Minute L min or LPM FREQUENCY
44. een gases t is therefore imperative that a calibrated oxygen analyser is used when setting and calibrating and when in use with a patient 37 Signet 615 Service Manual The device is calibrated to deliver non hypoxic mixtures of oxygen and nitrous oxide at a preset percentage of oxygen throughout the normal working range The percentage may vary above or below the setting of the nominal 25 due to various factors but it is normally set so that the oxygen is never less than 21 in the mix 5 6 2 AHD60 99 Service kit 11 off OR 5012S O ring 3 off OR 5006 O ring 3 off AHD143 Spring 2 off RO7 99 RO7 kit 10 off OR 5114S O ring 5 6 3 Tools to be used 8mm 5 mm and 3mm Allen keys Philips screwdriver Flat screwdriver 42 and 9 16 spanner Adjustable wrench Grease Dupont Krytox GPL 205 5 6 4 Preparation to service AHD6O anti hypoxic device Make sure that the anaesthetic machine is OFF Remove gas cylinders from the back of the machine Remove medical gas supply piping lines from the back of the machine Remove rear plastic cover using 8mm Allen key supplied with machine PWNE AHD60 Anti hypoxic Device Figure 19 Location of AHD60 Anti hypoxic Device on Anaesthetic machine 5 6 5 Service Procedure To service the AHD60 anti hypoxic device and or flow mete
45. es buildings used for domestic purposes Voltage fluctuations IEC Not applicable 61000 3 3 Signet 615 Service Manual 3 3 Gas Supply System 3 3 1 Gas Controls Pipeline Cylinder Patient Pressure Pressure Pressure Main Gauges Gauges Gauge On Off Switch VisiWink Supply Pressure Indicator Scavenge Connector Block Oxygen Connector Medical Gas Flowmeters Selectatec Vaporiser Mounting Medical Gas Flow Controls Figure 1 Gas controls on front of Signet 615 The ON OFF switch is mounted on the top right hand side and when activated allows for the supply of gases to be made available for use The ON OFF switch also turns on the power to the flowmeter backlight when gas supply pressure is present On the left hand side of the control console are the gas flow controls and rotameters Gas controls can be differentiated by their shape and colour The white oxygen 02 control is furthest to the left and to international design standards The nitrous oxide N20 control is dark blue and air is black and white The basic Signet 615 is a three gas five tube machine with two tubes each for nitrous oxide and oxygen 3 3 2 Flowmeters Having passed through the system each gas enters the base of the anti hypoxic device via the flow control valve into the flowmeter The flow control valves allow for fine adjustment of the flow rate through each of the flowmeter tubes ro
46. green it indicates oxygen is ON When red it indicates that oxygen pressure is OFF These items should not require calibration during the lifetime of the machine and should be replaced on defect only 3 3 10Scavenging On the left hand upright of the frame is the scavenging block which should be connected to wall suction Adequate scavenging flow can be achieved by adjusting the yellow knob so that the ball in the clear flow tube lies near the marked line The vacuum reservoir for scavenging is integrated into the frame of the machine using frame upright The scavenging block has two locations for pink red scavenging tubing to be connected If only one is being used the other can be sealed by using a bung supplied The wall vacuum tubing is then connected to the connector on the back of the block The flow meter tube has a filter silencer fitted this may require replacement after constant use as the filter can become blocked Refer to Section 5 10 for service instructions 3 3 11Auxiliary Oxygen Outlet An auxiliary oxygen outlet is mounted on the right hand frame upright where an oxygen flowmeter can be used This oxygen flow meter can be used to deliver oxygen to the patient instead of using the rotameters and standard common gas outlet This is used for example with neurolipse relative analgesia and local anaesthesia safely bypassing the possibility of accidental vaporiser delivery or in circuit complications The O 15 L min fl
47. ions Warning indicates a potentially life threatening situation o Never oil or grease any anaesthesia or oxygen equipment unless the lubricant used is made and approved for this type of service o Never connect the scavenging valves directly to vacuum source The vacuum may remove required gases from the patient circuit o Never cover anaesthesia equipment with any type of fabric or plastic covering Removing the cover may cause a build up of static electricity which can cause fire or explosion Caution indicates condition which can lead to equipment damage or malfunction o Avoid using excessive force when closing flow controls valves o Turn OFF anaesthesia machine when not used to minimise possibility of depleting oxygen supply o Ensure that all gas flow control valves are turned fully clockwise before system ON OFF switch is turned on to avoid damage to flow tubes by sudden surge of gases 4 2 Responsibilities of Service Personnel It is recommended that service procedures should only be performed by ULCO certified technicians at the recommended intervals A service record should be kept by Hospital and the service provider 4 3 Risks Only personnel certified by ULCO should attempt to repair and service ULCO Equipment to minimize risk of malfunction and or patient injury 3 1 Explosion The Signet 615 is restricted to use with non flammable anaesthetic agent only in order to minimise the possibility of an explosion 3 2 Electric
48. lacement of O ring OR 5006 OR 5007 OR 5011 spring A305513 and diaphragm A305516 31 Signet 615 Service Manual 3 32 Unscrew the 4 screws M4 x 30 from body A30551 see Figure 14 Remove the body A30551 and the N20 spool A305514 Replace its o rings OR 5006 and OR 5007 and apply silicone grease Molykote 111 on them The diaphragm A305516 must also be changed but assemble it dry no grease on it The spring A305513 can also be replaced To replace the o ring OR 5011 we must remove the adjustment stud A305511 First measure distance between the stud A305511 to the body A30551 use calliper This distance is important because this was set up prior assembly g Use a 5 8 spanner to unlock the nut A305512 and finally unscrew the adjustment stud A305511 by using a 2 spanner h Apply silicone grease on the o ring OR 5011 and reassemble the adjustment stud A305511 and measure distance as per step f and then assemble loose the nut A305512 so it can be adjusted on the set up of the valve i Carefully clean each part with an oxygen jet or similar non abrasive technique j Proceed to reassemble everything into the A6055 Take care when screwing in he adjustment stud to avoid cutting the O ring eee se Replacement of the oxygen side This is replacement of o rings OR D006 oxygen diaphragm A305534 gasket A305522 and spring A305543 a Unscrew the 4 screws M4 x 30 from body A30554 see Figure 14 b
49. lco as P N ASU203 Writing Tray Another accessory which can be supplied on the side is a fold down writing tray This is attached by a simple quick locking mounting block on the rail on the side of the work area The tray can be secured in a horizontal position by swinging the arm brace out from under the tray Many other accessories can be mounted on the rail via this method for example a universal circuit support arm able to swivel in many directions The lock screw on the side can control excessive movement Hooks are mounted to the bottom back panel and a movable sphygmomanometer mount is positioned on the top monitor tray An aneroid or mercurial sphygmomanometer can then be used 3 8 Accessory power The Signet 615 can be fitted with an optional 4 outlet power board at the top rear of the machine The power board is designed to prevent items other then monitors to be plugged in and is protected by an earth leakage circuit breaker or ELCB On the bottom right hand corner is a fitting for E P Earth If the 4 outlet power board is supplied a short connector cable is used to power some of the rotameter backlighting Second the ventilator power cord may also be connected here leaving the other 3 outlets for the operator s own requirements eg Patient monitoring 17 Signet 615 Service Manual 18 This page intentionally left blank Signet 615 Service Manual 4 Servicing Overview 4 1 Warnings and Caut
50. mounted on the side rail of the working area In its entirety it houses the common gas outlet the emergency oxygen flush a patient safety relief valve set to relieve at 60cm H20 pressure The common gas outlet is a 22 15mm male stainless steel cone with a weight bearing thread for attaching items such as the fresh gas connecting hose to the CO2 absorber or a Bain s adaptor The patient block can slide along the side rail to the most convenient position where it can be locked into position Fresh gas from the back bar is supplied to the patient block via the one way valve direct to the back of the common gas outlet This is in turn connected to the patient safety valve housing a safety valve that is adjusted to relieve at 60cm H20 pressure The emergency oxygen flush is supplied with oxygen direct from the oxygen manifold in the console When depressed the oxygen flush flow is set by a metered orifice that leads from the high pressure oxygen side of the flush valve to the common gas outlet The flow is normally 35 to 75 L min The patient block is replaced on defect only See section 5 11 for replacement instructions 13 Signet 615 Service Manual 3 3 5 The anti hypoxic device The Signet 615 contains many features to ensure patient well being The first of these is the anti hypoxic device This is now a mandatory device in Australia and many overseas markets This allows the anaesthetist to deliver 100 oxygen to the patient but never les
51. nd cannot be interfered with by the operator but is easy to adjust and calibrate by trained technical staff Refer to Section 5 6 for service and calibration instructions 3 3 6 Gas manifold The gas manifold is fitted to the rear of the machine All gases that supply the machine are connected via the manifold Pipeline air nitrous oxide and oxygen are connected from the wall as well as all pin index reserve cylinders All yokes are pin indexed and once cylinders are located can be secured into position The Signet 615 is fitted with diameter ring indexed gas fittings and colour coded hoses for wall gas supply white for oxygen blue for nitrous oxide and black and white for air Refer to Section 5 2 for service and calibration instructions 3 3 7 Main regulators The regulator and yoke for each gas are assembled in line to reduce the risk of high pressure leaks The gauge for each gas is connected by a copper tube in parallel The brass yoke bolt RG203 which has the Bodok seal RG204 attached to it and is fitted with a sintered bronze filter RG2031 passes through the yoke assembly and is screwed into the yoke adaptor body RG201 A stainless steel banjo bolt RG206 is used to mount the regulator main body RG101 to the adaptor body RG201 and the use of Dowty Seals RG205 prevent any leaks from occurring A pressure relief valve is fitted to the underside of the regulator body RG101 and is set to start relieving at 600 kPa
52. nt a Remove GCNOO1 gas connector by using a 16mm spanner By doing this remove the non return valve NRVOO1 RG205 Dowty seal and o ring OR 5006 b Replace o ring OR 5006 assemble into NRVOO1 non return valve and smear with silicone grease Molykote 111 c Reassemble NRVOO41 non return valve OR 5006 o ring RG205 Dowty seal and GCNOO1 gas connector into manifold body 24 Signet 615 Service Manual a b c d ei p Manifold Body Figure 6 Components to replace in Manifold A607X Replacement of RG205 and o ring OR 5005 at regulator connection Remove FITOO7 by using a 16mm spanner Remove RG205 and NRVOO3 non return valve with its o ring OR 5005 Replace RG205 and o ring OR 5005 and smear it only o ring with silicone grease Molykote 111 Reassemble NRVOO3 OR 5005 RG205 and FITOO7 into the manifold body Use a 16mm spanner for it Replacement of remaining o rings OR 5013 and OR 5005 a b c Remove the two screws SMO516SC by using a 4mm Allen key Replace o rings OR 5005 and OR 5013 and smear them with silicone grease Molykote 111 Reassemble o rings OR 5005 and OR 5013 into manifold body and then screw SMO516SC back Replacement of remaining RG205 Dowty seals along gas connector A605611 These Dowty seals RG205 are rarely replaced but if a need arrives this is the procedure a b C d The RG205 Dowty seal on the FITOO7 fitting can
53. owmeter can then be connected to the auxiliary outlet It should be tested to make sure it is operating correctly See section 5 9 for replacement instructions 3 3 12Pipeline Hose Assemblies The pipeline hose assemblies are fitted with non interchangeable connectors handwheels at both ends of the hose They are suitable for Australian wall outlets or cylinder regulators Each type of gas hose and handwheel is colour coded and diameter size indexed to the ISO International Standards Organisation standard for that particular gas Each hose must be connected to the correct gas inlet and sufficiently tightened to prevent gas leaks The anaesthesia machine is provided with hooks at the top rear of each leg for hanging the hoses 3 3 130xygen failure warning device This is a nitrous oxide cut off and whistle alarm In the event of a complete loss of oxygen from both the wall gas and cylinder gas supply the machine and the ventilator will continue to operate Once the pressure drops to approximately 225kPa an audible alarm will sound and the nitrous oxide supply through the rotameter will be cut off At the same time the supply of oxygen to the ventilator will cease ensuring all oxygen is available for the patient The flow of oxygen can still be seen at the rotameter At 220kPa there is only about 3 litres of oxygen left in the reservoir cylinder giving some time for the operator to rectify the pressure problems This can be achieved by turning on
54. r assembly we must also service the RO7 regulators 1 Replacement of o rings OR 5012 OR 5006 and spring AHD143 on N20 and oxygen ports of anti hypoxic device 38 Signet 615 Service Manual a If we want to only remove the components to be serviced in the anti hypoxic device there is no need to remove the AHD60 assembly Refer to Figure 20 b Unscrew the three screws SMO306B by using a 3mm Allen key c Remove plate AHD113 and by doing this the subassemblies AHD141 bodies with their internal components of N20 and oxygen ports will come out d Remove the needle AHD142 on each AHD141 body and replace its spring AHD143 and o ring OR 5006 Smear the o ring OR 5006 with Krytox grease e Replace o rings OR 5012 from AHD141 bodies and smear them with silicone grease Polycyte 111 f Reassemble the subassembly on the AHD141 bodies and then reassemble it into AHD6O anti hypoxic device g Screw the SMO306B into the AHD6O anti hypoxic device AC32221 AIR KNDB AHD142 NEEDLE 0R 5006 HD143 SPRING y OR 5012 AHD141 BODY DO NOT DISASSEMBLE THIS Figure 20 Components to replace in AHD60 Anti hypoxic Device 2 Replacement of o rings OR 5012 OR 5006 and spring AHD143 on air port of anti hypoxic device a Remove grub screw from the Air knob AC32221 with a flat screw driver and then pull out the knob b Remove nut NI38P by using a 9 16 spanner c Push from the knob
55. re Ge9y0Ev YAA 777 ZA Y YA Y LL Y UL YA Of OS iffy 29v0 v Sensan 8 We SS d 2297087 29027 e el Twa I29 0 V 7 713497 D lgl 11C094 Y E ASES Do fue gt E HW E d S e S ADS 13 NI HSfd ETSO9V H NT 1871 TF 890 0NS 7 SE HISOEOWS M E Figure 36 Assembly drawing of selectatec block 55 Signet 615 Service Manual 6 4 Manifold Block Assembly Oxy A6072 56 GAS CONNECTOR DOWTY SEAL NON RETURN VALVE SHORT O RING SPRING WASHER FITTING L 45 M F 1 8 BSP FITTING STRAIGHT M ADAPTOR 3 16 O RING NON RETIURN VALVE MANIFOLD A8072 GCNOO1 RG205 NRVOO1 A3057111 FITO45 FITOO7 OR5005 NRVOO3 I 1 4 PUSH IN 1 8 BSP SWIVEL T FITTING 1 4 PUSH IN 1 8 BSP SWIVEL STR FITTING BODY
56. roceed to unscrew SM01412B by using an Allen key 2 5mm This will allow A6052 ballsert housing to be pulled out c If using A605 9 Service Kit reassemble new A30462 Actuator Housing into the backbar A6051 and go direct to Step 2h d Replace all o rings springs washers and ballserts Reassembly of components on A605 Selectatec Refer to Figure 26 The reassembly of the subassembly into the selectatec body A6051 is a very delicate operation because any misalignment of the springs or ball will make the selectatec to leak Therefore follow these instructions step by step a Assemble o rings OR 5020 OR 5014 and OR 5012 into the ballsert housing A6052 b Assemble ballserts A304625 8mm ball and cage A304624 together 45 Signet 615 Service Manual c Putthe ballsert A6052 on a horizontal base and then put spring A304626 on top of A6052 Make sure the spring A304626 is straight as possible d Put on top of spring A304626 the subassembly b by placing the subassembly on top of a knife placing the knife on top of the spring and sliding the knife out With the fingers or tweezers gently push the ball and make sure the spring exerts some force on the 8mm ball e Put together A30462 Actuator housing A304621 actuator gas spring A304622 and washer A304623 f Carefully and quickly put and screw subassembly e on subassembly d Don t screw it too tight this will be done later g Proceed to put o rings OR 5020 OR 5014 OR 5
57. s than 21 oxygen in the presence of nitrous oxide in the mix This also means that no nitrous oxide can flow without oxygen Other devices sometimes allow oxygen flow once nitrous oxide has been turned on No Ulco machines allow this meaning that oxygen flow must be established before nitrous oxide is able to flow The device has been designed to eliminate inherent faults common in other similar products In some such devices both the oxygen and nitrous oxide begin to flow as soon as the nitrous oxide control is turned on The operator can thus become accustomed to setting all flows whilst only using the nitrous oxide flow control This is a safe practise assuming the anaesthesia machine is fitted with an anti hypoxic device Many machines both in Australia and overseas however do not have such a device enabling the operator to deliver a 100 nitrous oxide flow inadvertently The Ulco anti hypoxic device prevents this by ensuring that no nitrous oxide is permitted to flow unless the oxygen flow control is first turned on The nitrous oxide needle valve is held in place by the oxygen flow control The nitrous oxide flow control knob is free to rotate however in order to prevent damage if force is applied trying to achieve a flow when no flow is allowed When correctly adjusted and calibrated the device will prevent the delivery of hypoxic mixtures and oxygen flow will be maintained at 21 nominal flow 5 The device itself is tamper proof a
58. spanner The N20 flow must stop 3 to 5 seconds after the whistle first sounds 33 Signet 615 Service Manual 5 5 Ventilator Cutoff AGO56 5 5 1 A3056 99 Service kit 2 off OR 5006 O ring 1 off OR 5007 O ring 1 off OR 5011 O ring 1 off RG205 Dowty seal 1 off A305516 Spring 1 off A305513 Spring 5 5 2 Tools to be used 16mm spanner 12 spanner Silicone grease Molykote 111 Flat Screwdriver Multigrip 5 5 3 Preparation to service A6056 Ventilator Cutoff 1 Make sure that the anaesthetic machine is OFF 2 Remove gas cylinders from the back of the machine 3 Remove medical gas supply piping lines from the back of the machine A6027 RGI for AIR RGI for Ne RGI for Oxygen 46085 Figure 16 Location of AGO56 and A6056X Ventilator Cutoff on Anaesthetic machine 5 5 4 Service Procedure 1 To service the A6056 ventilator cut off we must follow Figure 17 a Use the flat screwdriver to remove the 2 screws that keeps the Ventilator Cut Off in the machine b Once the A6056 Ventilator Cut Off is out of the machine proceed to remove the four screws SMO430CH with a screwdriver c Once the screws are removed proceed to replace the diaphragm A305516 34 Signet 615 Service Manual e H By using the 16mm
59. tameters This ensures that accurate gas mixtures are achieved 12 Signet 615 Service Manual When the flow control valve s is are opened the gas continues at low pressure upward through the flowmeter tube whose float responds to indicate the rate of flow in litres per minute or parts thereof Note that the rate of flow is indicated by the top edge of the float bobbin against the flowmeter scale Indicated flows are accurate to within 1 875 of indicated flow 0 625 of the full scale Therefore for a flowmeter with a full scale reading of 10 L min set to deliver 7 5 L min the maximum permissible error is 7 5x1 875 10 0x0 625 100 0 141 0 063 L min 0 204 L min L min Gases passing through the flowmeter mix together at rates of flow selected by the anaesthetist Passing along the back bar part of the combined gases enter the vaporiser inlet if selected If the vaporiser is fitted and is in the OFF position the gases bypass the vaporising chamber and pass directly to the common gas outlet via the non return valve fitted in the terminating block of the back bar From here they pass to the anaesthetic equipment and to the patient If the vaporiser is selected ON gas mixtures entering the vaporiser collect a proportion of the anaesthetic agent from the vaporising chamber within The percentage volume is determined by setting the vaporiser control at the percentage figure calculated by the
60. th anti hypoxic device as standard 4 internally mounted mains power outlets 1 external mains outlet for use with powered vaporisers EV500 ventilator OPTIONAL Auxiliary power outlet board APB70 OPTIONAL 2kg absorber AB800 OPTIONAL Vaporiser s OPTIONAL Auxiliary flowmeter OPTIONAL Writing table standard Universal arm OPTIONAL 3 drawers standard Second absorber mounting post standard Signet 615 Service Manual 3 Description 3 1 Device Classification The Signet 615 Anaesthesia Machine is classified as follows e Class equipment for the purposes of electrical safety e Type CF applied part e Continuous Operation 3 2 Electromagnetic Environment The Signet 615 anaesthetic workstation is suitable for use in the electromagnetic environment specified in the table below The user must ensure that it is used in such an environment Emissions test Compliance Avoiding Electromagnetic Interference The anaesthetic workstation uses RF energy only for its Radio Frequency internal function Therefore its RF emissions are very low ee Group 1 RF emissions and are not likely to cause any interference in nearby electronic equipment RF emissions CISPR 11 SES Harmonic emissions IEC Not applicable The anaesthetic workstation is suitable for use in all 61000 3 2 establishments other than domestic and those directly connected to the public low voltage power supply network that suppli
61. the reserve cylinders amongst other alternatives Once normal pressure is re established the alarms turn off nitrous oxide will start to flow and the ventilator will start to cycle again 15 Signet 615 Service Manual The Visiwink only turns red below 125kPa At this stage if oxygen is not being supplied an alternative supply source should be established If air is connected there is a safe reserve with a content of around 21 oxygen Refer to Section 5 4 for calibration instructions 3 4 Electrical System 4 1 General Five IEC outlets are mounted internally in the machine Normally one outlet is used to power the electroluminescent EL backlight for the medical gas flow sensors One is reserved for powering the external outlet in the side of the machine the remaining outlets are available for powering Ulco supplied options such as monitors or ventilators All outlets are switched at the main workstation switch on the front panel The EL backlight is only switched on by a pressure sensor in the main gas supply Oxygen or air The circuit for the power distribution system is shown in Section 6 8 4 2 Serviceable Parts Under normal circumstances the electrical components require no servicing however the following components may be replaced on defect Power inlet and supply available lamp APB20 Main electro pneumatic switch assembly APB40 Inlet power cord Inlet circuit breakers Outlet fuses 2A
62. vice Intervals EE 22 D MENU x 22 Service of the Gas Supply System nn 23 DL OVeIVIOWs cech dn seventeen End ri EE ee 23 5 2 Gas manifolds A6072 A6073 and A6074 EE 24 b 2 1 v A3057 99 S6tVIGG KIt ZA aA A eee eus 24 5 2 2 TOOLS to De Used conem umi frr et eme rar eec ra 24 5 2 3 Preparation to service AGO7X manifolds sis 24 5 2 4 Service Proced re secedere tende rr de c ideni i ase de D dv edite Te dnte 24 5 2 5 Test of AGO 7X Elte 25 5 3 First Stage Regulators RO ds ns muy diyay ne kik tee mensa eri rn e eX a Dr eR ve perde ren te 26 5 9 40 LRG199 Service KIC AL ka xelaya d acero ente ad e s t dades 26 5 3 2 Tools to be USed nuk dis kya y keye etr tree cc kya qa exe 26 5 3 3 Preparation to Service RG1 regulators is 26 ak SERVICE Proced re ed mater bap ce ete Ba b rek ege ka VA y 27 5 3 5 Calibration of Post Serviced RG1 First Stage Regulators ku 29 5 4 Oxygen Failure Alarm AO si Kl Bas ndi Has b oit de eie pea ien dr ta Dent rre ine nate v dh 30 54 1 A3055 99 Service KIt ns Axa MA Aza ay eie E e e ea ete deat e 30 54 23 TOOS to DOUE add 30 5 4 3 Preparation to service A3055 oxygen failure alarm un 30 5 4 4 Service Proced re xx nala r dona AA ee pend aca res 31 5 4 5 Calibration of A6055 Oxygen Failure Alarm sisi 33 5 52 Ventilator Cutoff AGO D O nn nd EA dre fra da Eege Ree ker daa KE fr egt K Kabe 34 55 1 A3056 99
63. wing it will reduce the pressure at which the venting occurs Turning the grub screw clockwise i e screwing it in will increase the pressure at which venting starts If it vents too heavily the grub screw RG10512 needs to be screwed further in The reason is that the blow off valve must start venting at pressures greater than 600 kPa not less Once the correct blow off pressure is achieved proceed to screw the grub screw RG1061 until the pressure is 360 kPa which is the pressure required by the workstation Note that the regulation system has some hysteresis so if the adjustment grub screw is turned too far in and the pressure is too high it may need to be unscrewed further is order to achieve the desired regulation pressure When the regulator is working correctly there should be no noise emitted 29 Signet 615 Service Manual X Figure 11 Test Gauge on Manifold TEST GAUGE 5 4 Oxygen Failure Alarm A6055 5 4 1 A3055 99 Service kit a off A305516 N20 Diaphragm u off A305522 Gasket u 1 off A305534 Oxygen Diaphragm off A305513 N20 Spring u off A305543 Oxygen Spring 3 off OR 5006 O ring Loft OR 5007 O ring u 1 off OR 5011 O ring 5 4
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