Operators Manual Aquastop AC026 - Hy
Contents
1. O WASK AQUASTOP MK2 Temporary flow stopping system for water mains Operator Instructions ISSUE 2 01 06 12 www cranebsu com email wasksales cranebsu com INDEX TITLE Introduction 1 General Notes 2 Bag Setting ES Support Blade Setting 4 Setting The Base S Manual Drilling 6 Bag Charger Unit Check and Prime 7 Double Stop Off procedure 8 Single Stop Off Procedure 9 Low Pressure Application Fig 1 Schematic Layout Fig 2 Excavation schematic Mains Sizing Table Appendix A Contents Labels Page No 10 11 13 15 16 17 18 www cranebsu com email wasksales cranebsu com Introduction Aquastop has been developed to stop water flow with minimal disruption It has been designed to provide an easy low cost solution to stopping flow in an operational pipeline Aquastop can be used to isolate piping systems for repair alterations and renovation and is suitable for most pipe materials including cast iron ductile iron steel PVC and Polyethylene The system involves using an inflatable Sarco MKII Hydra Bag inserted into the mains with specialist launch equipment through a small diameter access hole The bag is then inflated by means of water pressure from the main through a specially designed bag pressurisation unit The system comprises lightweight easy to use equipment for small mains at up to 8 bar pressure and flow rates up to 10 litres sec The system is suitable for2. 2 6 2 7 2 8 Bag Setting Continued support blades the bag must be test launched to ensure that no snagging has occurred dur ing the two procedures To test launch open blades and stand the bag tube upright using the bag packaging to rest the nose shoe on Ensure the canopy lock is on drive down the inflation tube via the direction indicator handles until the bag emerges from the aperture in the nose shoe and rests on the packaging To retract pull up on the same handles This process can be repeated until the launch and recovery is acceptable Note The bag can be chlorinated prior to its final retrieval into the bag tube Inflation at this stage is optional Close the support blades Unlock the canopy clamp and slide the canopy down to a stop to conceal the bag tube re lock The AQUAS TOP head assembly is now ready to be loaded into the base www cranebsu com email wasksales cranebsu com Page 4 3 1 3 2 3 3 Support Blade Attachment Take selected Nose Shoe and with blades held closed offer the female thread of the actuator to the actuating rod such that the Nose Shoe tongue and a Bagtube cutout are in alignment Locate the 12mm d ez gt A F hex ratchet provided onto hex drive of the actu Blade actuator P ating rod situated on top of the Bagtube and rotate MC a A clockwise to attach the actuating rod to the Nose NC d Shoe ve 3 Tongue and cuto
3. either single or double ended flow stopping operations Page 1 www cranebsu com email wasksales cranebsu com 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 General notes DO NOT OPERATE THIS EQUIPMENT UNLESS YOU HAVE BEEN TRAINED IN ITS USE AN HOLD THE RELEVANT TRAINING CERTIFICATE ISSUED BY WASK IF ANY OF THESE INSTRUCTIONS CONFLICT WITH THOSE OF YOUR EMPLOYER YOUR EM PLOYERS INSTRUCTIONS MUST BE OBEYED ALWAYS CHECK THAT ALL PARTS ARE AVAILABLE AND IN GOOD WORKING ORDER BEFORE COMMENCING WORK The flow stop equipment shall comply with the latest design and all the associated equipment and fittings used during a stopping off operation shall be in sound working order When cut out work is carried out on jointed pipes the thrust generated by the pressure in the main acting on the bag may be high enough to uncouple non restrained pipe joints Con sideration shall be given to restraining the pipe work by an approved method such as a trans portable load bearing frame clamped to the main either side of the cut out section It is important to note that to stop off a main at an operating pressure in excess of 8 bar or flow rate in excess of 10 litres sec and where pressure or flow reduction is not practicable then it will be necessary to use an alternative stopping off system in accordance with ap proved codes of practice and manufacturers recommendations Before a programmed stopping off operation is undertaken
4. the Base unit Pull the strap to remove the slack as this will reduce time in tightening the nuts 4 9 Tighten the nuts evenly DO NOT OVER TIGHTEN A moderate tightening torque be tween 20 and 30 Nm will ensure satisfactory anchorage Use the 24 A F hex cast ring spanner provided 4 10 Using the other end of the spanner in 4 9 12 7 A F sq socket turn the Pivot stud to operate the Valve Plate in the base unit Check that the valve plate is undamaged and works smoothly Leave the Valve Plate in the open position Page 7 www cranebsu com email wasksales cranebsu com 5 1 5 2 5 3 5 4 D D 5 6 Manual Drilling Fit the 56mm Cutter into the Carrier and tighten nut using 19mm A F socket provided Fit the Carrier to the Drill Spindle ensuring that the flats on the Carrier engages the slot in the spindle Tighten the set screw to retain the Carrier using the T handle wrench Fitting a small magnet placed inside the shell will facilitate retention of the drill coupon Fit the Spindle fully into the Drilling head with the Cut ter inside the bell of the Drilling head The Drilling head should always be lifted by both the Drill Spindle and Bridle NOTE THIS IS A SAFETY FEATURE Ensure the Vent Lock spindle is in the OPEN position with the handle pointing away from the base Using the large spanner fit the drilling head into the bayonet of the base unit turning clockwise to a stop and then rotate the
5. the operating pressure of the main should be reduced to the lowest level at which adequate supplies can be maintained A work programme shall be prepared and should include schedules of all necessary safety and operational equipment and of all operational procedures This programme should include contingency plans for the possibility of bag failure and the availability and operability of rele vant upstream and downstream line valves Details of the general arrangement and critical dimensions are shown in Fig 1 and Table 1 The drilling of the main installation and subsequent removal of the bag support tubes and plugging of the holes shall be carried out using an approved under pressure drilling machine An adequate bypass shall always be installed unless it s omission is specifically authorised by the Engineer or his representative Page 2 www cranebsu com email wasksales cranebsu com 2 1 2 2 2 3 2 4 2 5 Bag Setting Release Canopy Clamp Whilst holding Can opy stationary push down on Bagtube to expose threaded end of tube Place the head assembly down flat on the packing box and rotate the bag tube handles until they are horizontal and the cut out is orientated verti cally Re clamp Select the correct size of Bag see Table 1 Attach to Inflation tube and tighten to seal using 16mm A F open wrench provided Inflation tube The Bag direction MUST be set BEFORE being inserted into the main Rotat
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7. e Inflation tube until the nose of the bag points in the opposite direction to that of the Cut out in the Bag tube Release the E Direction indicator using the 5 A F hexagon T wrench and align the pointer with the nose of the bag and then re tighten At this stage the bag can be liberally sprayed using a WFBS listed Silicon lubricant paying par ticular attention to the stitched joints This will enhance bag handling during launch and recovery The bags are pressure tested sealed and packaged at the manufacturers and there vw fore no further pressure test is required be u T N fore insertion However your employers A a mn procedures may require you to do a pres A To sure test and this is best done at stage 2 3 hl 2 Using an air pump and the inflation vent e y adaptor di a P j V E Deflate the bag then fold down and with draw bag into bag tube taking care to avoid snagging at screwed end of actuating rod L DO NOT rotate inflation tube relative to bag _ tube once the direction of the bag is set s This would cause the bag to twist resulting in launching difficulties Pull back the bag via the inflation tube such that the bag nipple i retracts into the bag tube and is clear of the e Cut out ts wi a PR eh L N uar i 24 i Inflation tube Vent M v Page 3 www cranebsu com email wasksales cranebsu com 2 NOTE Follow Section 3 to attach and set the
8. eached it s stop and the Bridle can be released SAFETY NOTE The mains pressure will try to force the Drill Spindle upwards this must be restrained by using the Feed Screw in order to avoid serious injury Close the Valve Plate by rotating the Pivot Stud anti clockwise the slot on the Stud should noe be pointing to the center of the machine Ensure the Equalisation Valve is closed Open the Vent Lock by rotating anticlockwise Water pressure will be release through the valve and when the pressure has dropped to zero the Drilling Head may be removed SAFETY NOTE Continuous venting of pressure from the Valve indicates leakage past the Valve Plate or an open Equalisation Valve Check both are closed and it this does not resolve the prob lem do not attempt to remove the Drilling Head Close the Vent Lock and seek technical advice Use the large Spanner to remove the Drill Head Removed the drilled out coupon from the cutter clean up and re attach the magnet ready for the next opera tion Replace the Cutter if damaged or worn 1 gin Feed screw IB 1 Dn Ue a d NM www cranebsu com email wasksales cranebsu com M ut Coupon retained by magnet Page 9 6 Bag Charger Unit check and prime 6 1 This procedure can be carried out having first in stalled the standpipe Ensure all bypass outlets are shut or capped as necessary Attach the female end of the blue hose to one of t
9. es Drill Centres Double Flowstop Fig 2 Schematic of minimum excavation dimensions Page 18 5 engel YL Age wi get umipce wi wi val 5 val B PIRE D Bc 5 L uw T mL Wwe ode sco xm aw s Oe uamarzz ENW val vH A GWEIN mL TW mb pet EMH ETHW c hL qua E nc m X ucena SEES L Sai WM e au PED GELF BEDW gel gett P RUN Eesen ME me Crone ven Cp HN E nl ge Q0 ven eis MR 36ON EE LES Cg acid 109 WUM usn BONYN OXYN ONNO dorman SIS JEENS MAICHSITLT I Ses 3 HILTUE dap EP ZO NM Cl 4715 NON S IS BE qd unuczz AS J dia WA at juxun ba 3j WALLIS Wid MYD m sg uus cd ad UE CUR 3718 WOH AE H we ol LE HUS LL HIE ik HOS LL oa AOC SELL ipu mg jssmpj Ober oe Up US Db 5T Hee ODS deen Etgen BM vemm ad Per EUM dd UDDUDD Deck Gobo EUA lf RELIEF DIM Mel SoSH jma UO HT LLEF ED uoa mu g 5g Hl m r ZC EHO DW JM dE TL SOT THHOALISE ddid HZY TONUH NOLLWDI Tdd dOLSYDDW MEM email wasksales cranebsu com www cranebsu com CECOVH On SISCH poc yv EZDW H MOc SBCX Oke X GOLL Janed GL X SEV X OPEL SO DESH GLE X GFF X UP6 XOg SS GLE X OEF X OS xog DUU DOL OD2L X DOcL PesHellEd ASAI SNOISN3INICI Dy 89C pesteled Wind ZSIHOISA ont Z X SDyl Sg JebJeu Deg Soy 99 Xog PESH soy 7G xog ssEd g PS SUD DUNNING Page 19 email wasksales cranebsu com www craneb
10. f each of the red hoses depress the end to dispel any air trapped in the hose the hoses are now primed The blue hose was purged at stage 6 2 Close all valves prior to start of the flow stopping operation 6 7 The Pressure Gauge assembly can be snapped into the Filler Cap assembly This will enable Bag Pressure t to be monitored P The Bag Charger unit and hoses are now primed for use Bag outlet manifold Colour red www cranebsu com email wasksales cranebsu com Manifold Bag outlet colour red 12 6 Page 10 Double stop off procedure 7 1 7 2 7 3 7 4 7 25 7 6 7 7 9 7 9 7 10 7 11 7 12 From Table 1 mark out the positions for the four saddles two either side of the intended cut Attach all the saddle amp base units At the upstream bypass point drill the main then take a pres sure reading at this point Note A pressure gauge can be attached to the valve on the drilling head for this purpose If satisfactory the operation can proceed Attach the bypass standpipe Attach Pressure gauge supplied to one of the snap connectors on the standpipe Do not open Plate Valve At the downstream bypass position repeat steps 7 1 7 2 At the upstream bag insertion position attach the Drilling Head and drill main Recover the drill coupon remove drilling head leaving base valve in the closed position Repeat step 7 4 at the downstream bag insertion position Remove the B
11. he two male connectors Fer co on the bag outlet manifold of the Bag charger and close the adjacent valve Attach the male end of the blue hose to the remaining available outlet snap con rw nector on the standpipe the other will be occupied is ab 1 by a pressure gauge 6 2 Unscrew the filler cap situated on top of cylinder and add a chlorinated solution suitable to treat 9 litres SAFETY NOTE Chlorine Is a hazardous substance Consult your employer procedures for the handling and use of chlorine Open inlet valve to fill air space in cylinder do not allow chlorinated water to spill out of filler Close valve and replace filler cap to provide a pressure seal 6 3 Reopen valve and check filler cap is leak tight At the other end of the unit push a short hose onto the hose connector of the drain valve open drain valve The piston assembly within the unit will travel to a stop due to the water pressure in the main Water or air initial priming issuing from the drain valve indicates piston movement 6 4 When this ceases turn off the drain valve and the blue hose valve 6 5 Swap over the blue hose from the bag outlet connec tor to the mains water inlet manifold via the male snap connector adjacent to the drain valve Ensure all valves on the unit are shut 6 6 A Attach the Red feed Hose to one of the connectors on the bag outlet manifold To purge air from the hoses open all three hose valves Taking the male end o
12. ised go to next step 9 3 Using a suitable Hydraulic Pump fill the Pump Reservoir This can be done by Opening the Vent Valve on the Upstream Bag Charger Mains Water will flow from the Vent Hose When complete close the Vent Valve 9 4 Disconnect the Blue Hose from the Outlet Connector of the Upstream bh Stand Pipe and attach to the Pump Outlet 9 5 Operate the Pump to increase Bag pressure indicated by the Bag Gauge to a maximum of 3 5 bar Isolate the Pump 9 6 Repeat steps 9 2 9 5 for the Downstream Bag 9 7 After a few minutes allowing for the system to settle de pressurise the working section 9 8 On completion of the work de pressurise and recover the Bags in the normal manner Page 15 www cranebsu com email wasksales cranebsu com 253 REIS AILS D NOLLOAS SINT AYOM SO LI JO MOILOSHIO Sw TITHE TH1H d HBU INIM Sw 3210 LS MY Ls 34v1340 RHOES id ONY SSHVHOSH s5vdAu A Cl ez 1 Aquastop schematic layout Fi Jdid SEW SH lg Zu aye iz WO List 2 rv Yd KH MOLLY LAML gn mmm SE T eg dt Tir a 3aHvHZSIC e E Pu ANN E LIN KOL STS dd LIN HOLL WED Hd E3EUH HEN AE SH Page 16 email wasksales cranebsu com www cranebsu com uloo nsq9ugJ9 MMM uioo nsgeueJo D se esyseAM reuie LT ebed Single Flow Stop 1 0 metre 2 0 15 0 metres 1 0 metre DOW Q T 9J 9ul Q T 0 6 metre 0 6 metre Drill Centr
13. llow the working section to re pressurise deflate the bags see step 7 17 and then repeating steps 7 12 amp 7 14 Once a satisfactory leakage is obtained the main can now be opened and drained for repair work to commence To remove equipment amp reconnect main On completion of the repair work the working section may be filled flushed disinfected amp pres sure tested by opening the RECHARGE VALVE and controlling water flow with the VE V7 VALVE Once at mains pressure de pressurise the downstream bag by closing the blue hose inlet valve and opening the pressurisation unit vent valve When water ceases to flow from the vent valve the bag can be recovered into the bag tube Close SUPPORT BLADES unlock canopy clamp and lift the BAG 7UBE back into the AQUASTOP head close the valve plate amp vent the head Repeat above operation for the upstream equipment Close bypass valve plates remove recharge pipe amp bypass pipe from standpipe Disconnect pres surisation units amp remove standpipe Pack away all hoses standpipes amp pipe work Fit appropriate completion plug to fitting spindle fit spindle into drilling head and install plug into the saddles Vent head and check for leak tightness adjust if required remove base unit clean and place in box Repeat at other position Remove the AQUASTOP heads from the base units remove the bags and discard place equip ment in box Repeat step 7 21 at each location Clean thread
14. ping by the cam handle 12 A F hex ratchet Page 5 www cranebsu com email wasksales cranebsu com 4 Setting the Base A Metallic amp PVC pipes see paragraphs 4 1 4 8 B Polyethylene pipes refer to manufacturer 4 1 Use a wire brush to ensure pipe surface is clean and free from loose soil or rust The pipe surface should be free from deep pits or holes 4 2 Select the correct Viking Johnson EasiTap Saddle to suit the outside diameter of the pipe The size range is marked on each sad dle 4 3 Follow the installation instructions supplied with the EasiTap Saddle ensure threaded outlet is vertical 4 4 _ Remove the closure cap and plug from the saddle and store in a safe place 4 5 Take the Aquastop Base unit and check that the O Ring is in position and is free from damage 4 6 Fit Base unit to the outlet thread on the Easi Tap Saddle and rotate clockwise to tighten Note The Base unit may finish pointing randomly this is OK for Bypass positions For bagging positions the base must line up with the main with the Plastic Cap facing towards the working section Plastic Cap Page 6 www cranebsu com email wasksales cranebsu com 4 Setting the Base Continued 4 7 _ Rotate the Base unit Anticlockwise until the Base unit lines up as indicated Note It should not need to be rotated more than 1 turn 4 8 Pull the Strap around the pipe and hook the Anchor yokes bolts in to the arms of
15. re readings should be taken at this point to ensure that the bypass has sufficient capacity to support downstream demand and there is no substantial pressure drop across the bag Jf a pressure drop has developed seek tech nical advice Page 11 www cranebsu com email wasksales cranebsu com 7 13 7 14 JAS 7 16 7 17 7 18 7 19 7 20 7 21 7 22 7 23 Double stop off procedure continued Open downstream Valve Plate lower BAG 7UBE into main and check alignment release and open BAG SUPPORT BLADES set then lock the BAG TUBE CLAMP Attach the Vent adapter and using moderate force push down the Inflation Tube to launch bag downstream into the main Hold Inflation Tube in place using strap provided Replace the adapter with the male end of the second Red hose and inflate the bag using the second Pressuri sation unit Allow 5 minutes for conditions to stabilise monitor both pressure gauges Ensure that the RECHARGE VALVE is closed and open the downstream VE V7 VALVE to de pres surise the working section between the bags Allow the water escaping to discharge to waste At this point the canopies may move this is normal and indicates that the bags have seated against the internal support Allow 10 minutes for conditions to stabilise Note If there is excessive leakage issuing from the Vent Hose the bags may be deflated and repositioned to achieve an improved seal Do this by first closing the VENT VALVE to a
16. s on saddle outlets and fit completion caps The operation is now complete Page 12 www cranebsu com email wasksales cranebsu com 8 1 8 2 8 3 8 5 8 6 8 8 8 8 9 8 10 8 11 Single stop off procedure From table 1 mark out the positions for the two saddles on the upstream side of the intended cut Attach drilling machine at the standpipe take off point and cut an appropriately sized tap ping Take a pressure reading at this point Note A pressure gauge can be attached to the valve on the drilling head for this purpose If satisfactory the operation can proceed Attach a Type A bypass standpipe Attach Pressure gauge supplied to one of the snap connectors on the standpipe and close off the 2 bypass outlet using the 2 CAP provided Do not open valve plate Fit a base unit at the bag insertion position and drill Recover the drill coupon remove drilling head leaving base valve in the closed position Fit a previously prepared AQUASTOP head into the base and attach the recharge hose to the 1 outlet on the standpipe and flush out When satisfactory attach free end to the 1 outlet on the canopy Open the VENT VALVE on the canopy and the RECHARGE VALVE Attach blue feeder hose to the remaining snap connector on the standpipe and prime the pres surisation unit as detailed in section 6 Open valve plate lower BAG7UBE into main and check alignment for upstream deployment release and open BAG SUPPORT BLADES se
17. su com EAP ee CO AH E puc w z vals I6z0v ATgMSSSYgoYdd Cie UE Set 8l3SSv Qv3H WIEN Nidwucgies 77 J3NNvdSl13HOlvd Ls ll XH jy WUZ e i TE ugNNYdS Jw Mig 17802 dOldvQvl1N3 9v8 18l0v iss Lo ugege gen 8 STOVE SS Sea AGNBSSY 2eCH 8 Ce y MTINSSSYSSON P mme nBW3ssv ECH E cneg XTgiasev CG ncn Qv3H dOlL SYDD NAU es HO N NOLdMDSI1U Lan sepelg jo Z 98c X 08c X 801 spiert Z X5Dy Ge IS Deg Cr GLC GFF Orc LI d PESH soy 99 Xog peeH ge nS HUE SES SAC SPP OPE xog sseEd g SD CS Og SSECIAJ cecovd ON xog SLEX OS X SP xog BUMA V9cOOVv doJsEnby 002 X 00ZzI X 002I Feste SP 89c DeSDe led I Ing SANW SNOISNSIWIG ZSLHOISM sby pg xog Gu Page 20 email wasksales cranebsu com www cranebsu com Z S8TGECOVH Xog s1u21uo YO MSONYHO HaoHVHO 98 HOON NOlLdi2S30 redo SD rel DY Lol xog 1eD1euo Deg S cOv3 ON xog V9cOOV 7 ojsenby Jo c 98c X 08c X GO 1951249 GJc X S X OPS Xog pee GLZ X Str X Oo Xog ssedg gie OCP X OS xog pulp 007 QOcL OOcL peshelled SW SNOIS NAIC c XSDy gc uebieuo beg sD 99 xog peeH sD CS Xog SSEGAtj sby pg xog Pm sby 8c pesrejied wy lln ZSIHSI3M Page 21 email wasksales cranebsu com www cranebsu com Fes Suv o dail poe dw t S9 dort g3NNOO di fid I M
18. t outlet drain When water ceases to flow from the vent valve the bag can be recovered into the bag tube Page 13 www cranebsu com email wasksales cranebsu com 8 15 Single stop off procedure continued Close SUPPORT BLADES unlock canopy clamp and lift the BAG 7UBE back into the AQUASTOP head close the valve plate Close standpipe bottom valve and with the recharge hose still attached and communicating to the bag canopy de pressurise the standpipe hose and canopy via the base unit vent valve Dis connect the pressurisation unit amp remove standpipe Pack away all hoses standpipe amp pipe work Remove bag canopy and remove nose shoe Recover bag and discard Pack away Canopy and nose shoes Fit appropriate completion plug to fitting spindle fit the spindle into drilling head and install plug into the saddle Vent head and check for leak tightness adjust if required remove base unit clean and place in box Repeat at other position Clean threads on saddle outlet and fit completion cap The operation is now complete Page 14 www cranebsu com email wasksales cranebsu com 9 Low Pressure application 9 1 During pressurisation of each Bag pressure will register on the Gauge assembly on the Filler Cap For pressures less than 3 0 bar it may be necessary to increase Bag pressure via a Hydraulic Pump to effect a shut off 9 2 If the Upstream Bag Pressure is less than 3 0 bar and the working section cannot be de pressur
19. t then lock the BAG TUBE CLAMP Attach the inflation tube adapter and using moderate force drive down the inflation tube to launch bag upstream into the main The inflation tube when free will tend to rise against mains pressure hold in place using strap provided Replace the adapter with the male end of a red hose and inflate the bag NOTE At this point the main will be shut off and any flow downstream will be supported by the recharge hose On a single stop off the only flow demand will be from leaks up to the dead end A ow 5 minutes for conditions to stabilise Close the RECHARGE VALVE at the standpipe and close the canopy valve Uncouple the recharge hose at the standpipe end care should be taken as the hose will be pressurised Open the can opy valve and de pressurise the working section downstream of the bag Allow 10 minutes for conditions to stabilise Note If there is excessive leakage issuing from the vent hose the bags may be deflated and repositioned to achieve an improved seal The main can now be opened and drained for repair work to commence To remove equipment amp reconnect main On completion of the repair work the working section may be filled flushed disinfected amp pres sure tested Reattach the recharge hose to the standpipe and open the valve controlling water flow with the VENT VALVE on the canopy When satisfactory de pressurise the bag by closing the blue hose inlet valve and opening the pressurisation uni
20. ut P a AAX 0flf 1 i a Engage large brass nut onto Bagtube by rotating clockwise Before assembly locks up from attaching actuating rod in 3 1 ensure tongue and cut out is located As the nut is tightened the support blades will open out This is achieved by the Actuating pin locating in the blade slots effected by a down wards movement IMPORTANT Do Not allow this pin to bottom out in the slots otherwise it will become over stressed and fail The pin position is adjusted by ro tating the actuating rod clockwise to raise and anti clockwise to lower using the 12mm A F hex ratchet provided The large nut should be tightened up to a stop use the Pin wrench provided a The Blades MUST be set BEFORE being inserted into the main With the Nose Shoe attached the Blades should be fully open and the pin positioned near to the bottom of the blade slots Adjust if necessary as described in Support blade 3 2 Check blade operation by attaching the Actuating pin at top of Cam onto the hex drive such that the minimum side blade slot is situated adjacent to the top face of the Bagtube Fix in place using the captive pin such that 180 cam operation can be achieved Carefully operate cam to raise the support blade pin which on full stroke will close the blades fully with the pin situated at the top of the blade slot adjust if necessary Note The actuating rod is spring loaded and care should be taken upon opening the blades to avoid trap
21. vent lock spindle clockwise to lock the drill ing head in position NOTE THIS IS A SAFETY FEATURE Check that the Valve Plate is open indicated by the pivot stud pointing away from the center of the ma chine The Base unit has a pressure Equalising Valve identified by a blue handle for high pressure operation Check that it is in the closed position indicated by the cast word press exposed on the base unit SAFETY NOTE Your employer procedures may require you to perform a pressure test at this point The canopy ts fitted with a ball valve for this purpose Slowly lower the Spindle down until the Cutter is in contact with the pipe Fit the Ratchet Spanner ensur ing it will drive clockwise Swing over the Bridge and locate Feed Screw button into the dimple of the drill spindle Whilst turning the Spindle with the Ratchet Spanner gradually feed the drill via the Feed Screw Moderate force should be used as too much will damage the Cutter and make Spanner operation difficult Page 8 www cranebsu com email wasksales cranebsu com 5 7 5 8 5 9 5 10 5 11 5 12 Manual Drilling Continued Once the Cutter has penetrated the pipe wall it will become easier to rotate the Ratchet Continue drilling for at least 1 to 2 turns of the Feed Screw particularly if the main is lined as this will ensure the cut is com plete The Feed Screw can now be reversed by turning anti clockwise until the Drill Spindle has r
22. ypass Hose end caps and attach one end of the Hose to the upstream Standpipe Open the Plate Valve at that point and flush out the Hose when satisfactory close the Valve plate and attach free end to downstream Standpipe Open both Valve Plates fully The Bypass is now in service Fit a previously prepared AQUASTOP head into the upstream Base unit adjacent to the Standpipe position Attach the Recharge hose to the 1 outlet on the Standpipe and flush out When satis factory attach free end to the 1 outlet on the Canopy Fit the torque arm to the canopy Fit the remaining prepared AQUASTOP head into the downstream Base unit and attach the Vent Hose on to the 1 outlet on the Canopy Attach Blue feeder hose to the remaining snap connector on the Standpipe and prime the Pres surisation Unit as detailed in section 6 Repeat at other Standpipe for second Pressurisation unit Open upstream Valve Plate lower the BAG7UBE into main and check alignment release and open BAG SUPPORT BLADES set then lock the BAG 7UBE CLAMP Attach the Vent Adapter and using moderate force push down the Inflation Tube to launch bag upstream into the main The Inflation Tube when free will tend to rise against mains pressure hold in place using strap provided Replace the adapter with the male end of a Red Hose and inflate the bag NOTE At this point the main will be shut off and all flow downstream will be supplied by the bypass pipe Upstream and downstream pressu
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