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storage & maintenance

winteriZing:

For storage and transportation purposes in subfreezing ambient temperatures,
it will be necessary to winterize 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.
2. 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 temperature may fall below
32°F, you can protect your unit by following the procedure outlined below.
. Gather the following items:
a. Two 5 gallon containers.
b. One gallon of antifreeze. (Use an environmentally safe antifreeze.)
c. Water supply.
d. Three foot hose, 1/2-3/4 I.D. with a 3/4 inch male garden hose fitting.
2. Procedure:
a. To start winterizing, unit must be primed and run according to the "Start-
up/Cold Water Procedures" listed on page 6.
b. After priming and running, shut off the unit and water supply.
c. 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.
d. Lock the trigger gun in the OFF position and remove the Dual Lance
assembly.
e. Remove the water supply hose from the unit and attach the 3 foot hose
securely to the inlet connection.
f.
Shut off the detergent injector.
g. Fill one 5 gallon container with water.
h. 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.
i.
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.
NOTE: Proper winterizing is based on the recommended manufacturer's
instructions listed on the "Protection Chart" shown on the back label
of most antifreeze containers.
j.
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.
k. Point the trigger gun into the empty container.
l.
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.
m. Detach the 3 foot hose from the unit and drain any excess antifreeze
back into the 5 gallon container.
n. Disconnect the hose and trigger gun from the unit and drain any excess
antifreeze back into the 5 gallon container.
o. Store the hose, trigger gun and dual lance assembly with the unit in a
safe area.
p. Store antifreeze solution for next use or dispose of according to state
EPA laws.
3. Optional Procedure:
a. Shut the unit and water supply off.
b. Relieve system pressure by pointing the trigger gun in a safe direction
and squeezing the trigger until water flow ceases to exit the nozzle.
c. Disconnect and drain the hose, trigger gun and dual lance assembly.
d. Remove the drain plug from the heat exchanger inlet.
e. 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 off.
NOTE: 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 completely thawed.
GH-Series Operator's Manual
WARNING
risK of unit bursting.
do not store / operate unit in
a freeZing enVironment!
32˚F
0˚C
coil drain plug
9

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