Service & Parts Manual - Market Forge Industries
Contents
1. 1 1 95 3434 95 3434 Barksdale Pressure Switch 2 1 95 2907 1 95 2907 Pressure Switch Gear Assy 3 2 10 5944 N A Contactor 120V Coil 3 N A 2 10 5943 Contactor 240V Coil 4 1 10 6290 N A Timer 120V 4 N A 1 10 6873 Timer 240V 5 1 10 9268 1 10 9268 Temperature Gauge 6 1 10 6515 N A Relay 120V 6 N A 1 10 6874 Relay 208 240V 7 1 10 6005 1 10 6005 Terminal Block 8 1 10 9267 1 10 9267 Pressure Gauge 9 1 08 6469 1 08 6469 Fuse Holder 10 1 10 5990 1 10 5990 Low Water Cut off 11 1 09 6483 N A Contactor 75 Amps 120V 11 N A 1 09 6484 Contactor 75 Amps 240V 12 1 10 7355 1 10 7355 Transformer 100 KVA 60Hz NOVEMBER 24 2015 12 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST QTY PART NO DESCRIPTION 1 1 95 3442 1 95 3442 Barksdale Pressure Switch 2 2 10 5944 N A Contactor 120V Coil 3 N A 2 10 5943 Contactor 240V Coil 3 1 10 6290 N A Timer 120V 4 N A 1 10 6873 Timer 240V 4 1 10 9268 1 10 9268 Temperature Gauge 5 1 10 6515 N A Relay 120V 6 N A 1 10 6874 Relay 208 240V 6 1 10 6005 1 10 6005 Terminal Block 7 1 10 9267 1 10 9267 Pressure Gauge 8 1 08 6469 1 08 6469 Fuse Holder 9 1 10 5990 1 10 5990 Low Water Cutt Off 10 1 09 6483 N A Contactor 75 Amps 120V 10 N A 1 09 6484 Contactor 75 Amps 240V 11 1 10 7355 1 10 7355 Transformer 100KVA 60HZ NOVEMBER 24 2015 13 STM E STM EL STM2. and electrical components as well as a mounting base for the control panel The pres sure gauge dial thermometer exhaust valve switch and timer protrude through the control panel The Flue cover may be removed to allow more room for servicing the control components The control panel face may then be removed by unscrewing the sheet metal screws which mount it to the Flue THE EXHAUST SOLENOID VALVE The exhaust solenoid is normally closed and only opens at the end of the cycle when it is energized Figure 7 NOVEMBER 24 2015 STM E STM EL STM EX amp STM ELX STERILIZERS MISCELLANEOUS COMPONENTS TO REPLACE A THERMOSTATIC ELEMENT 1 Remove the cap of the steam trap turn it counter clockwise CAP amp BELLOWS pow 2 Unscrew the diaphragm and seat and discard 3 Wipe all dirt and scale from the inside of the steam trap Padi 4 Place a new diaphragm and seat securely into the steam trap and replace the cap New Style Part No K IT PART N 98 1719 98 1 7 9 Figure 8 THE STEAM TRAP The Steam Trap has the very important automatic dual function of exhausting all air from the sterilizing compart ment and of making a suitable seal to allow a pressure build up of live steam during a cycle of sterilization Also a slot is milled at an angle through the seat to allow a constant bleed off of a slight a
3. exhaust solenoid and the timer motor They will revert back to their original deactivated state The timer motor and pilot light will con tinue to be energized after the timed sterilizer cycle has been completed and for two additional minutes Only after this will the timer and white pilot light be de energized If the timer fails to operate the Sterilmatic replace it The timer is replaceable only as a complete unit as factory repairs to it would not be practical in the economical inter ests of the customer THE STEAM PRESSURE GAUGE The Steam Pressure Gauge registers the pressure of steam which is within the sterilmatic sterilizing chamber To replace this unit it is necessary to disconnect the cop per tubing and to remove the two nuts holding the gauge framework in place THE SAFETY VALVE The Safety Valve is factory set to automatically open and exhaust excess steam from within the sterilizing cylinder thereby assuring that operating pressures remain within safe limits The lever action of the safety valve must be free to operate unrestricted at all times If the Safety Valve should leak continually with a pressure build up or should it cause an interruption on a sterilizing cycle premature ly below 124 Centigrade on the temperature gauge it must be replaced However the temperature gauge should first be checked for accuracy THE FLUE The Flue serves as a protective shield for the steam trap safety valve exhaust valve
4. has been evaporated away the temperature of the aluminum sterilizing cylinder will rise and by heat in duction effect the Low Water Cut Off Its inner electrical contacts will be forced open from heat expansion thus cutting off the flow of electric current to the heating ele ments With the replacement of water into the cylinder the cylinder temperature will drop and the contacts of the Low Water Cut Off can be again closed The unit will only restart after the manual button has been re set THE ELECTRIC CONTACTORS The Electric Contactors are located on the top of the unit underneath the top flue cover These important compo nents receive an electrical impulse when the Timer is turned on When the unit reaches a pre set pressure of 13 13 5 PSI the 1 switch will cut out causing the front contactor to become de energized This in turn will dis connect the left and right bank of heaters and the timer motor will start THE TIMER The Sterilmatic is put into operation with the manual set ting of the timer With the setting of the timer an electrical current is directed to the pressure control The current en ergizes the pressure control which activates the contac tor coils to cause a current flow to the heating elements When the cylinder pressure reaches 13 to 13 5 PSI the timer motor and pilot light are energized At the end of the cycle the timer will cut off the flow of electricity to all the components except the exhaust the
5. input of current to the tempera ture control thus closing the contacts completing the current to the heating elements Steam will then be gen erated within the sterilizing chamber The steam pressure within the sterilizing chamber is transmitted by means of a tube to the bellows of the tem perature control as the steam pressure increases its compression action on the bellows causes the contacts to make or break according to the condition of the pres sure at that time rising or falling Switch 1 on the control is set to cut out on rising pres sure at 0 95 kg cm2 and to cut in on falling pressure at 0 91 kg cm2 controlling the two outer banks of heating elements Switch 2 is set to cut out on rising pressure at 1 09 kg cm2 and cut in on falling pressure at approxi mately 1 05 kg cm2 controlling center heater element only Thus a balancing effect of steam pressure build up and heater element current is constantly maintained during the sterilizing cycle When the Timer signifies the end of the cycle the electric current to the contactors will auto matically be broken Figure 6 CHECKING THE 110 C SETTING STM ELX The Unit should be completely evacuated then tempera ture selector dial turned to 110 C Centigrade Observe the current until it takes a sharp drop to approximately one third of the full load at this instant there should be a corresponding chamber pressure of 0 14 kg cm Observing the current further
6. long Figure 4 ITEM PART NO DESCRIPTION 13 10 4485 Drain valve knob 14 10 2514 10 Shakeproof lockwasher 15 10 2318 10 32 acorn nut 16 95 2643 Adapter steinball valve 17 10 1950 6 32 Round head screw 1 5 8 long 18 95 2616 Front outer case lower 19 95 0116 Fulcrum and drain casting 20 10 1049 ue 1 2 IPS 2 1 4 long stainless 21 10 1041 Ball valve stein NEN TE i NOVEMBER 24 2015 5 STM E STM EL STM EX amp STM ELX STERILIZERS PRESSURE ACTUATED TEMPERATURE CONTROL STM E AND STM EL The pressure actuated temperature control located be hind the control panel assembly governs the manufac ture of steam by controlling the input of electric current to the heating elements HOW IT WORKS When the Timer is set rear and front contactors will be come energized allowing input of current to the tempera ture control thus closing the contacts completing the current to the heating elements Steam will then be gen erated within the sterilizing chamber The steam pressure within the sterilizing chamber is transmitted by means of a tube to the bellows of the tem perature control as the steam pressure increases its compression action on the bellows is set to cause the Switch 1 on the control to cut out on rising pressure at 13 5 PSI and to cut in on falling pressure at 13 PSI con trolling the two outer banks of heating elements Switch 2 is set to cut out on
7. will show another sharp drop to approximately 1 Amp at this instant there should be corresponding chamber pressure of 0 43 kg cm and a temperature reading of 110 C Centigrade on the tem perature gauge ADJUSTING THE RANGE OF OPERATION STM ELX The range of operation of Model STM ELX is adjusted by simply turning the adjusting knob on the outside of the Control Panel A counter clockwise turn decreases the pressure while a clockwise turn increases the pressure Observe pressure and temperature gauges and adjust knob as required NOTE When resetting this control for elevations above sea level a correction of 0 13 kg cm2 per kilo meter elevation is necessary NOVEMBER 24 2015 7 STM E STM EL STM EX amp STM ELX STERILIZERS MISCELLANEOUS COMPONENTS CAST IN HEATING ELEMENTS Located under the sterilizing cylinder is a bank of 3 U shaped heating elements These elements are welded in place in a protective aluminum shield The elements can not be removed and in the unlikely event that one or all fail the complete cylinder must be replaced THE LOW WATER CUT OFF MANUAL RESET Fastened to a special mounting brace behind the front panel the Low Water Cut Off acts to shut off the complete unit should the water run dry The Low Water Cut Off is factory set to shut the unit off when the cylinder tempera ture rises between 380 and 440 Fahrenheit When the Sterilmatic is turned on without water or the water
8. 15 5 PSI pressure Current not heating all of the ele ments 2 Steam trap fails to close 3 Exhaust valve fails to hold pres sure at 15 5 PSI 4 Steam leaks around door 5 Safety valve blows off prema turely Remove lower front panel and see if the heating elements are working Replace the thermometer within the steam trap Check for incorrect adjustment on temperature control Readjust Check for worn gasket or make door adjustment Replace safety valve Unit releases pressure before cycle has terminated on timer Low water cut off has functioned prematurely Replace low water cut off Timer is erratic or fails to return to zero Loose or broken electrical leads on timer Repair defective wiring Unable to obtain set temperature at peak of cycle Steam trap closing prematurely preventing removal of air from the chamber Replace the thermostatic element in the steam trap One or both sides of the cast in heating elements remain on when the timer is in an OFF position Contactors of the temperature control switch remains closed 2 Temperature control not properly calibrated Replace switches Recalibrate Heating element cutting out before 15 Ibs of pressure is reached Pressure cutting off at the tem perature control too soon See adjusting the range of opera tion and calibration of the tem pe
9. 95 0659 Door Handle Bearing Plate 12 10 2513 1 4 Shakeproof Lockwasher 13 10 1731 1 4 20 Machine Screw 5 8 Lg 14 95 0190 Door Lock Casting Assy Items 1 through 6 15 95 0145 Door Lock Knob Assy Items 1 through 7 16 95 0144 Complete Door Handle Assy Items 1 through 13 17 95 0198 Handle Bushing Not Shown MISCELLANEOUS PARTS NOT SHOWN STM E L STM E L X PART NO DESCRIPTION QTY PART NO 1 95 2606 Temperature Recorder 120 V Optional 1 10 5343 Temperature Recorder 240 V Optional 1 20 0316 Replacement Probe For Recorder 1 95 2653 Upper Mounting Plate 1 10 5788 120v 50 60 Hz Cycle Coil 1 95 3552 Wire Harness Flue Assy 1 95 3553 Wire Harness Contactors NOVEMBER 24 2015 18 STM E STM EL STM EX amp STM ELX STERILIZERS
10. ESET 3 RESET TER TO OPERATE 1 Fill with 4 to 6 quorts of woter 3 Select exhaust 2 Load sterilizer amp close door 45 e timer EXHAUST SELECTOR TEMPERATURE STM EL STM ELX PART NO PART NO PART NO PART NO DESCRIPTION 1 10 0489 10 0489 Bezel 2 10 1722 10 1722 Round Head Machine Screw 6 32 3 10 9280 10 9279 Control Panel 4 10 5052 10 6669 10 5052 10 6669 Pilot Light Red 5 10 9267 10 9271 10 9267 10 9271 Pressure Gauge 6 10 5999 10 5999 Switch 7 10 9268 10 9268 Temperature Gauge 8 10 0189 10 0189 Timer Knob 9 10 5940 10 6876 10 5940 10 6876 Pilot Light White 10 10 5990 10 5990 Low Water Cut Off 11 10 0051 Knob NOVEMBER 24 2015 16 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST NOVEMBER 24 2015 17 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST DOOR HANDLE ASSEMBLY PART NO DESCRIPTION 1 10 2318 10 32 Acorn Nut 2 10 2514 10 Shakeproof Lockwasher 3 10 1999 10 32 Machine Screw 1 3 8 Lg 4 95 0120 Bearing Spacer 5 95 0136 Door Lock Casting 6 10 2517 3 8 Shakeproof Lockwasher 7 10 0050 Door Lock Knob 8 95 0134 Door Handle Casting 9 10 2359 1 4 20 Acorn Nut 10 95 0658 Door Handle Bearing Stud 11
11. EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST ITEM no ao DESCRIPTION 1 1 95 2558 Flue Cover Assy 2 1 95 2652 Flue Outer Case Wrap 3 1 95 2650 Upper Case Front 4 1 98 4371 Lower Case Front w cutout 1 95 2616 Lower Case Front old style w o cutout 5 1 10 6363 Insulation Body 6 1 10 6365 Insulation Back 7 1 10 6364 Insulation Bottom 8 1 95 0465 Bottom Cover for Elements 9 1 95 2628 Oylinder 208V 240V Shown with Door Assy NOVEMBER 24 2015 14 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST DESCRIPTION 1 95 3196 Outside Case Left Side 2 95 3195 Outside Case Right Side 3 95 3194 Outside Case Back 4 10 0226 Handle Bumper 5 95 3484 Terminal Box Cover 6 95 2545 Pan Rack 1 Left amp 1 Right 7 95 2637 Condensate Baffle Upper 8 95 3207 Perforated Water Splash Baffle 9 95 3284 Wear Strip NOVEMBER 24 2015 15 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST STERILMATIC 10 OPERATE t Fill with 4 to 6 quarts of water 2 Lood sterilizer amp close door 3 Select exhousl 4 Set timer LOW WATER INDICATOR TO RESET 1 ADO WATER 2 PUSH RESET 3 RESET TIMER FAST INSTRUMENTS SLOW 0005 EXHAUST SELECTOR TEMPERATURE e LOW WATER INDICATOR TO RESET 1 ADD WATER 2 PUSH R
12. H 1 Figure 5 CHECKING THE 230 SETTING STM EL The Unit should be completely evacuated then tempera ture selector dial should be turned on 230 Fahrenheit Observe the current until it takes a sharp drop to ap proximately one third of the full load at this instant there should be a corresponding chamber pressure of 2 PSI Observing the current further will show another sharp drop to approximately 2 Amps at this instant there should be a corresponding chamber pressure of 6 1 PSI and a temperature reading of 228 to 232 Fahrenheit on the temperature gauge ADJUSTING THE RANGE OF OPERATION STM EL The range of operation of Model STM EL is adjusted by simply turning the adjusting knob on the outside of the Control Panel A counter clockwise turn decreases the pressure while a clockwise turn increases the pressure Observe pressure and temperature gauges and adjust knob as required NOTE When resetting this control for elevations above sea level a correction of 6 10 Ibs per thousand feet is necessary NOVEMBER 24 2015 STM E STM EL STM EX amp STM ELX STERILIZERS PRESSURE ACTUATED TEMPERATURE CONTROL STM EX AND STM ELX The pressure actuated temperature control located be hind the control panel assembly governs the manufac ture of steam by controlling the input of electric current to the heating elements HOW IT WORKS When the timer is set rear and front contactors will be come energized allowing
13. as a unit without the use of any special tools or equipment However a systematic approach to this is warranted as the clearances through the portal are close and much confusion can result if not removed in the sequence described below Door Seal First lift off and remove the two pan supports to ex pose the door linkage on either side of the inner steril izing chamber Raise the door to a fully opened position and dis engage the door spring from each of the door spring studs Accomplish this by counteracting the force of the door lift spring with one hand while working the end of the door spring off the spring stud with the free hand Do this on both sides of the door assembly When the end of the door springs have been com pletely freed from their respective door spring studs the door springs on either side of the door assembly can easily be slipped off their studs Rotate the entire door assembly out through the door opening passing the door handle through the opening first and then one end of the door spring as shown in the illustration The remainder of the door assembly will then pass through the door opening quite easily To replace the door assembly reverse the step by step procedure described above Figure 3 ITEM PARTNO DESCRIPTION 1 10 6765 Pivot Spring Bearing 2 91 2718 Right and Left Door Spring sold as a pair 3 10 1776 10 32 Machine Screw 1 2 Long 4 10 2666 Door Gasket 5 95 3204 Door amp Doo
14. dy MARKET FORGE I N DU S T STERILMATIC ANALOG ELECTRIC STERILIZER PARTS AND SERVICE MANUAL EFFECTIVE NOVEMBER 24 2015 Superseding All Previous Parts Lists The Company reserves the right to make substitution in the event that items specified are not available ERRORS Descriptive and or typographic errors are subject to correction MARKET FORGE INDUSTRIES 44 Lakeside Avenue Burlington Vermont 05401 USA Telephone 802 658 6600 Fax 802 860 3732 www mfii com P N 14 0412 Rev C TABLE OF CONTENTS DOOR ASSEMBLY amp 5 Ck Ie ore pete sees 3 FULCRUM AND DRAIN ASSEMBLY 21255560400 00a Cer er ree e e bo gu v 5 PRESSURE ACTUATED TEMPERATURE CONTROL 6 MISCELLANEOUS GOMEPONENHS 2 2422222222222 2252 8 TROUBLESHOOTING serangane renr a EXE sa De oe aoe a 6 6o ae AL 10 ILLUSTRATED PARTS LIST vest oie 233332339 805555555 8 11 NOVEMBER 24 2015 2 STM E STM EL STM EX amp STM ELX STERILIZERS DOOR ASSEMBLY amp ADJUSTMENT STERILMATIC DOOR ASSEMBLY The Door of the Sterilmatic has been engineered to es tablish a positive method of sealing the steam pressure within the sterilizing cylinder As steam pressure builds up within the cylinder the door seal will tend to become more positive However the door should be adjusted to make a good initial seal betwee
15. mount of steam during the cycle to completely eliminate any air pockets in the cylin der Failure of the trap to operate properly will result in an uneven distribution of live steam within the compartment Figure 9 How it works With the introduction of steam into the sterilizing com partment cold air will escape When sufficient generated steam displaces the cold air it will then start to exhaust through the steam trap to heat the thermostatic element The expansion of the thermostatic element will make a seal against the seat to enclose the live steam within the sterilizing compartment and a steam pressure build up will occur NOVEMBER 24 2015 9 STM E STM EL STM EX amp STM ELX STERILIZERS STEAM TRAP TROUBLE SHOOTING TROUBLESHOOTING Trouble can only occur either through the premature closing of the steam trap before all the cold air has been exhausted or by its failure to close sufficiently to enable a proper steam pressure build up Either case warrants a replacement of the thermostatic element TROUBLE Sterilizer fails to operate at all no pres sure build up POSSIBLE CAUSE 1 Not installed correctly 2 Blown fuse 3 Contactor burned out 4 Wiring is defective CORRECTION Check wire diagram for correct hook up Replace fuse If it blows check that source of electric supply is 60 amps Replace Check all wiring Repair or re place Sterilizer operates but fails to build up
16. n the door gasket and the door opening without the added assistance of internal cylinder steam pressure with the simple action of securing the door han dle down in a locked position the door gasket should be sufficiently compressed against the door opening all the way around to prevent any steam leakage from occurring Door Seal Adjustment To Loosen Door Seal To Tighten Door Seal Figure 1 DOOR ADJUSTMENT The Door Adjustment is Located in the Fulcrum Casting at the base of the door opening This adjustment employs the use of a screw and locknut in order to adjust the Steril matic Door to a tighter closed position to prevent steam from leaking by the door gasket as pressure builds up it is necessary to loosen the locknut and back off the screw at least one quarter of a turn and re tighten the locknut 425 1 m uu B NT FIRST PULL OUT FOR DOOR SEAL ADJUSTMENT TO TIGHTEN DOOR LOOSEN A AND TURN B 1 4 TURN COUNTERCLOCKWISE TO LOOSEN DOOR s TURN B 1 4 TURN CLOCKWISE BE SURE TO TIGHTEN LOCKNUT A AFTER ADJUSTMENT AND THEN DOWN TO LOCK Figure 2 THE DOOR GASKET Keep the gasket clean With normal closing and locking of the door assembly a steam tight seal should be made between the door gasket and the door opening This seal cannot be maintained if particles of foreign matter are al lowed to accumulate upon either of the contacting
17. r Spring Assembly 95 0124 Items 1 through 5 NOVEMBER 24 2015 4 STM E STM EL STM EX amp STM ELX STERILIZERS FULCRUM AND DRAIN ASSEMBLY THE FULCRUM amp DRAIN ASSEMBLY The fulcrum and drain assem bly is located at the lower front of the sterilizing chamber and furnishes a sturdy anchorage for the door locking system of the door handle Also provided in this assembly is a means for adjustment of the door seal The drain port and drain valve pro vide a means of discharging ac cumulations of water from within the sterilizing chamber ROLLER ASSEMBLY ITEMS 8 amp 9 The Roller Assembly must be kept free rolling at all times Should this assembly be allowed to become frozen due to lack of lubrication undue strain will be put on the door handle and the fulcrum casting while the door is being locked Use only a dry lubricant such as graphite as oil or grease will tend to attract dirt to this area ITEM PART NO DESCRIPTION 1 10 3116 1 4 20 X 5 8 helicoil 2 10 1999 10 32 Machine screw 1 5 8 long 3 10 2358 1 4 20 fulcrum nut 4 10 2087 1 4 20 allen set screw 5 10 3111 1 4 20x 3 8 helicoil 6 10 2513 1 4 Shakeproof washer 7 10 1763 1 4 20 Machine screw 3 4 long 8 95 0120 Bearing spacer 9 95 0198 Bronze Bearing 10 10 3111 1 4 20 x 3 8 helicoil 11 10 2513 1 4 Shakeproof washer 12 10 1790 1 4 20 Cap screw 7 8
18. rature control Readjust NOVEMBER 24 2015 10 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST 4 ITEM QTY STM EL 120V STM ELX 240V DESCRIPTION 1 1 95 0438 95 0438 Nipple 1 2 NPT x 1 5 2 1 98 1718 98 1718 Steam Trap 3 1 10 1048 10 1048 Compression Fitting 1 2 OD Tube x 1 2 NPT 4 1 95 2667 95 2667 Tube Copper 1 2 OD 5 2 10 1055 10 1055 Tee Brass 3 8 x 3 8 x 3 8 6 3 08 7525 08 7525 Nipple 3 8 NPT Close 7 1 10 1058 10 0938 Valve Solenoid 8 3 10 1054 10 1054 Elbow Street 3 8 NPT 9 1 10 1017 10 1017 Adapter 5 8 OD Tube x 3 8 MNPT 10 1 10 1057 10 1057 Union 3 8 NPT 11 1 10 7988 10 7988 Bushing Hex Reducing 1 4 MNPT 12 1 10 3741 10 3741 Bushing Hex Reducing 3 8 NPTx1 4 NPT 13 1 10 3918 10 3918 Fitting 1 4 Comp X 1 4 MNPT 14 1 10 7942 10 7942 Valve Safety 17PSIG 15 2 10 3352 10 3352 Tee 1 2 NPT Brass 16 1 10 3327 10 3327 1 2 NPT Square Plug 17 1 Temp Probe Available with Control Module Only 18 2 95 3730 95 3730 Elbow 1 2 NPT 90 Street Modified 19 1 08 4980 08 4980 Nipple Pipe Male 1 2 Npt x 3 20 1 10 3684 10 3684 Adapter 1 2 OD Tube to 3 8 NPT NOVEMBER 24 2015 11 STM E STM EL STM EX amp STM ELX STERILIZERS ILLUSTRATED PARTS LIST PART NO DESCRIPTION
19. rising pressure at 15 5 PSI and cut in on falling pressure at approximately 15 PSI controlling center heater element only Thus a balancing effect of steam pressure build up and heater element current is constantly maintained during the sterilizing cycle When the Timer signifies the end of the cycle the electric current to the contactors will auto matically be broken the temperature control contacts will be broken and steam generation will stop ADJUSTING THE RANGE OF OPERATION STM E NOTE These instructions should be performed by qualified service personnel only The operational range of the temperature control is fac tory set as follows Outer bank of elements OFF at 13 0 13 5 PSI Center bank of elements OFF at 15 5 15 0 PSI minor compensating adjustments can be made by turning the adjusting screws counter clockwise to increase pres sure and clockwise to decrease pressure Both screws should be turned the same amount when making an ad justment NOTE When resetting this control for elevations above sea level a correction of 6 10 Ib per thousand feet is necessary 1 Before making adjustments shut all electrical current to the sterilizer OFF to eliminate shock hazard 2 Remove the Flue Cover 3 Make sure that all exposed wires are not in a hazard ous position and then turn on electrical power 4 Run unit through cycle observing pressure and tem perature gauges turn adjusting screws as required SWITC
20. sur faces If there is leakage by the door gasket before a steam build up within the steam chamber and leakage does not stop when the sterilizer reaches sterilizing temperature and pressure than regard the door assembly as improp erly adjusted A re adjustment must then be made of the seal adjustment door screw To change the door gasket remove the entire door as sembly as a unit Discard the old gasket replace it with a new one no cement is required and reinstall the door assembly Make an operational check for leakage and ad just the door if necessary NOVEMBER 24 2015 3 STM E STM EL STM EX amp STM ELX STERILIZERS DOOR ASSEMBLY amp ADJUSTMENT DOOR LIFT SPRING Market Forge supplies door lift springs in sets only This policy has been found to be in the best interest of the customer Through continuous use some of the original qualities of the springs are lost and it becomes advan tageous to make replacements to both the left and right door lift springs in the event that one becomes damaged or broken Replacement door lift springs are marked with tabs at the factory prior to shipment to identify a right from a left spring These springs must be installed with the right door lift spring on the right of the door and the left door lift spring on the left of the door as viewed from the front of the sterilizer TO REMOVE THE DOOR ASSEMBLY The Door Assembly can be removed from the inner steril izing chamber
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