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17
STORAGE & MAINTENANCE
INSTRUCTIONS
Winterizing
For storage and transportation purposes in subfreezing
ambient temperatures, it will be necessary to winter-
ize this unit. This unit must be protected to the lowest
incurred temperature for the following reasons:
•
If any part of the pumping system becomes frozen;
excessive pressure may build up in the unit which
could cause the unit to burst resulting in possible
serious injury to the operator or bystanders.
•
The pumping system in this unit may be permanently
damaged if frozen. Freeze damage is not covered by
warranty.
If you must store your unit in an area where the tem-
perature may fall below 32°F, you can protect your unit
by following the procedure outlined below.
NOTICE
Do not store/operate unit in a freezing environment.
Damage to washer could occur.
Gather the following items:
•
Two 5 gallon containers.
•
One gallon of antifreeze. (Graco® recommends an
environmentally safe antifreeze.)
•
Water supply.
•
Three foot hose, 1/2-3/4 I.D. with a 3/4 inch male
garden hose fitting.
Procedure:
1. To start winterizing, unit must be run and primed
according to the “Start-up Procedures” listed on page
12.
2. After running and priming, shut off the unit and water
supply.
3. Relieve system pressure by pointing the trigger gun in
a safe direction and squeezing the trigger until water
flow ceases to exit the Dual Lance Assembly.
4. Lock the trigger gun in an OFF position and remove
the nozzle.
5. In one 5 gallon container, mix the antifreeze and water
according to manufacturer’s recommendations for the
temperature to which you are winterizing.
Note:
Proper winterizing is based on the recommend-
ed manufacturer’s instructions listed on the “Protec
-
tion Chart” shown on the back label of most antifreeze
containers.
6. Remove the water supply hose from the unit and
attach the 3 foot hose securely to the inlet connection.
Submerge the other end into the antifreeze solution.
7. Shut off the detergent injector if applicable.
8. Holding the 3 foot hose in an upright position,
completely fill the hose with water. Then plug the hose
outlet with your thumb or finger. Place the plugged
end into the 5 gallon container of water.
9. Start the unit. Trigger the gun several times until all
the air is worked out of the system (unit is primed). It
may be necessary to adjust the engine RPM down to
an idle to aid in priming.
10. With the trigger gun held open, siphon enough water
out of the 5 gallon container until there is just enough
water left to mix with the antifreeze.
11. Point the trigger gun into the empty container.
12. Trigger the gun until the antifreeze begins to exit the
trigger gun. Release the trigger for 3 seconds, then
trigger the gun for 3 seconds. Continue cycling the
trigger gun several times until all the antifreeze mixture
is siphoned from the container.
13. Detach the 3 foot hose from the unit and drain any
excess antifreeze back into the 5 gallon container.
14. Disconnect the hose and trigger gun from the unit
and drain any excess antifreeze back into the 5 gallon
container.
15. Store the hose, trigger gun and dual lance assembly
with the unit in a safe area.
16. Store antifreeze solution for next use or dispose of
according to state EPA laws.
Optional Procedure:
1. Shut the unit and water supply off.
2. Relieve system pressure by pointing the trigger gun in
a safe direction and squeezing the trigger until water
flow ceases to exit the nozzle.
3. Disconnect and drain the hose, gun and dual lance
4. Remove the hose from the inlet side of the heat
exchanger coil.
5. Start the unit and allow it to run until all the water exits
the unit. Once the water has stopped flowing from the
unit, turn the unit off.
NOTICE
When using this procedure, caution should be used
as ice chips can form from drops of water which
could cause the unit to burst if starting before com-
pletely thawed.
32˚F
0˚C
Summary of Contents for AquaMax 3540GHW
Page 21: ...21 Notes...
Page 22: ...22 Pressure Washer Parts 262314 Model 3540 GHW...
Page 24: ...24 Engine Pump Assembly Parts Item 17 for use with Model 3540 GHW...
Page 26: ...26 Pump Assembly Parts 16E609 for use with Model 3540 GHW...
Page 28: ...28 Unloader Manifold Assembly Parts Item 8 for use with Model 3540 GHW...
Page 30: ...30 Heat Exchanger EMF Assembly Parts Item 31 for use with Model 3540 GHW...
Page 32: ...32 Bracket Electrical Box Assembly Parts Item 28 for use with Model 3540 GHW...
Page 34: ...34 Decal Placement Parts 262314 Model 3540 GHW...
Page 36: ...36 Notes...