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8

Water System Operation

and Maintenance Manual

Procedure to Air  Purge the Water  System

Serial Numbers up to 0292655

1. Drain all water from water tanks.
2. Remove nozzle from sewer hose.
3. Start auxiliary engine.
4. Start truck chassis engine.
5. Turn top sewer hose control valve and bottom pump control valve on the front hose reel to the 

ON

position.

6. Turn air purge valve on left side of the water pump to the 

OPEN

 position.

7. Allow air to push water from hose.
8. When hose is free of water, rotate hose reel clockwise until all water is drained out.
9.

CLOSE

 air purge valve and turn 

OFF

 bottom water pump control valve and top sewer hose control

valve.

10. Remove handgun and plug from the handgun connection.
11. Turn 

ON

 handgun valve.

12. Turn 

ON

 bottom pump control valve.

13.

OPEN

 air purge valve and wait for all water to be blown from handgun system.

14. Turn 

OFF

 bottom pump control valve.

15. Tune 

OFF

 handgun valve.

16.

CLOSE

 air purge valve.

17.

OPEN

 debris body flushout valve.

18. Turn 

ON 

bottom pump control valve.

19.

OPEN

 air purge valve and wait for all water to be blown from water system hoses.

20. Turn 

OFF

 bottom pump control valve.

21.

CLOSE

 debris body flushout valve.

22.

CLOSE

 air purge valve.

23.

OPEN

 drain valves at water pump.

24.

OPEN

 air purge valve and wait for all water to be blown out of pump.

25.

CLOSE

 air purge valve.

26. Shut 

OFF

 auxiliary engine.

27. Shut 

OFF

 truck chassis engine.

28. Remove drain caps from water system bulkhead fittings under bumper, curb side.
29. NOTE:  Store unit with all  the water system ball valves in the 

ON

 position.

CAUTION:  Water freezes at 32 degrees F.  If at all possible try to store unit in an area above this

    temperature.

IF ABOVE PROCEDURE IS FOLLOWED, UNIT SHOULD BE FREE OF WATER.

Summary of Contents for 691-7001

Page 1: ...Water System Operation and Maintenance Manual 691 7001 Section 70 Section 70 Section 70 Section 70 Section 70 AuxiliaryEngineDrivenWaterPump ...

Page 2: ...death could occur to you or other persons The hazards are identified by the safety alert symbol and followed by a signal word such as CAUTION WARNING OR DANGER as shown below The message that appears under the signal word explains the hazard and can be either written or pictorially presented Vac ConInc cannotanticipateeverypossiblecircumstancethatmightinvolveapotentialhazard Thewarningsin this pub...

Page 3: ...nthemainframe 5 MakesurethehandguntriggerisintheOFFposition 6 Topressurizethehandgun turnONthehandgunsystemballvalvelocatedonthefrontbumpercurbside 7 TurnthebottompumpcontrolvalveonthefrontofthehosereeltotheONposition 8 Thepressureofthehandgunsystemissetat650PSIatauxiliaryengineidlespeed NOTE NEVERrunthetruckengineoveridlespeedwhileoperatingthehandgun 9 Todepressurizethehandgunsystem turnOFFthebot...

Page 4: ...e hose reel counter clockwise to increase the RPM s of the auxiliaryengine notingthecorrespondingwaterpressureincrease NOTE Maximum pressure for 30 GPM systems is 2000 2500 PSI 60 GPM systems and above is 1800 2000 PSI 6 Todepressurizethedebrisbodyflushoutsystem turntheauxiliaryenginethrottlecontrolonthefronthose reel clockwise reducing the auxiliary engine RPM s to idle speed The water pressure g...

Page 5: ...h the hose reel and back to the water tanks 7 Increase theauxiliaryengine speeduntilitreaches1500RPM Thiswillprovideamplewatercirculation andallowtheauxiliaryenginetoburnenoughfuelsotheenginewillnotdrool NOTE Theauxiliaryenginetachometerislocatedinthegaugepanelontheauxiliaryengineonthedrivers side of the truck 8 To stoptherecirculationsystem firstreducetheauxiliaryengineRPM stoidlespeed 9 Turn OFF...

Page 6: ...sconnecttherodderhosefromthefittingonthehoseguideandattachthehoseendtothehoseonthe hose reel by means of a rope or tie strap 10 TurnthetopsewerhosecontrolvalveandthebottompumpcontrolvalvetotheONposition 11 Rotatethehosereelclockwiseuntilnomorewatercomesoutofthehose 12 Turnthebottompumpcontrolvalve andthetopsewerhosecontrolvalvetotheOFFposition 13 Openallthehandgunconnections 14 Turnthehandgunballv...

Page 7: ...llthewaterispumpedout NOTE LeavetheneedlevalvesintheOPENposition 20 ShutOFFauxiliaryengine 21 ShutOFFtruckchassisengine 22 Removethedraincapsfromthewatersystembulkheadfittingsunderthefrontbumper curbside 23 NOTE StoreunitwithallthewatersystemballvalvesintheONposition CAUTION Water freezes at 32 degrees F If at all possible try to store unit in an area above this temperature ...

Page 8: ... 12 TurnONbottompumpcontrolvalve 13 OPENairpurgevalveandwaitforallwatertobeblownfromhandgunsystem 14 TurnOFFbottompumpcontrolvalve 15 TuneOFFhandgunvalve 16 CLOSEairpurgevalve 17 OPENdebrisbodyflushoutvalve 18 TurnONbottompumpcontrolvalve 19 OPENairpurgevalveandwaitforallwatertobeblownfromwatersystemhoses 20 TurnOFFbottompumpcontrolvalve 21 CLOSEdebrisbodyflushoutvalve 22 CLOSEairpurgevalve 23 OPE...

Page 9: ...Nbottompumpcontrolvalve 14 OPENairpurgevalveandwaitforallwatertobeblownfromhandgunsystem 15 TurnOFFbottompumpcontrolvalve 16 TuneOFFhandgunvalve 17 CLOSEairpurgevalve 18 OPENdebrisbodyflushoutvalve 19 TurnONbottompumpcontrolvalve 20 OPENairpurgevalveandwaitforallwatertobeblownfromwatersystemhoses 21 TurnOFFbottompumpcontrolvalve 22 CLOSEdebrisbodyflushoutvalve 23 CLOSEairpurgevalve 24 OPENdrainval...

Page 10: ...leanwatergetsintoyourwatersystem 4 Whileyouarestillconnectedtoyourwatersource thisisagoodtimetoprimeyourwaterpump Thisis accomplishedbyfollowingtheseeasysteps A Besureallpetcocksanddrainvalveshavebeenclosedandremovequickdisconnectplugfrom handgunconnection B Starttheauxiliaryengineatidle C TurnhandgunvalveON frontbumper D TurnwaterpumpvalveON hosereelbottomvalve E Onceyouhaveasolidhighpressurestre...

Page 11: ...zed forbelttensioning 9 DO NOTattempt to adjust belts unless the auxiliary engine control fuse has been removed from the control panel Tightening Belts 1 Loosenthefourenginemountingbolts 2 Using an 1 1 8 wrench adjust belt tension by turning both engine takeup rods an equal number of turns one or two turns at a time Check tension and repeat if necessary 3 Check sheave alignment with a straight edg...

Page 12: ...r 1 and 1 1 4 Swivel Joints Packingkitincludes ChevronPackingand O Rings RepairKitincludes ChevronPacking Back upRing Balls and O Rings 1 1 4 Swivel Packing Kit 663 0111 Repair Kit 663 0108 1 Swivel Packing Kit 663 0107 Repair Kit 663 0104 Lock Bar 663 0124 Lock Bar Screw 601 0322 Grease Zerk 605 0003 1 SwivelNipple 2 HoldingNut 3 Body 8 Back upRing 9 MaleAdapterRing 10 LockBar ...

Page 13: ...oints 1 Removeswivelfromtruck 2 Removelockbar 10 3 Removenut 2andnippleassembly 1fromthebody 3byturningnutcounterclockwise 4 Removeback upring 8frombody 5 Remove2packingrings D 6 Removemaleadapter 9 7 Cleanpackingchamberandreinstallmaleadapter 9 newpacking D andback upring 8 greaseallparts thoroughly Replace O ringifnecessary 8 Insertnut 2andnippleassembly 1inbody 3andreassemble Rotatenippleoccasi...

Page 14: ...ecyclecost Safety ThetruckenginemustbeshutOFFwiththekeyremovedfromtheignitionandthewaterpumphydrostaticdrive systemdisengagedbeforeattemptinganyserviceonthepumpsorpumpdrive Airsurroundingtheunitshouldbe freeoftoxic flammable orexplosivegases Thetoolsneededshouldbeplannedforinadvance seevalveremovalinstructions andshouldbecleanandof adequatesize Atorquewrenchwillberequiredtotightenconnectingrodcaps...

Page 15: ...15 Water System Operation and Maintenance Manual Notes ...

Page 16: ...Vac Con Inc 969 Hall Park Drive Green Cove Springs FL 32043 phone 904 284 4200 FAX 904 284 3305 www vac con com Vac Con part number 691 7001 printed in USA January 2002 ...

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