Prochem Legend SE AD - Manual (Page 31)

OPERATION
LEGEND SE 980059 06/19/03 3-23
FREEZING PROTECTION
If the unit is exposed to freezing weather the
water in the unit may freeze, causing SERIOUS
DAMAGE to the unit. To avoid this, the following
is recommended during the cold weather
season:
When the unit is not in use, always park it in a
heated building.
While in operation, avoid long shutdowns as the unit
provides heat while running. Shut it down just prior
to leaving for the next job.
If a heated building is not available, we recommend
that you winterize the unit with anti-freeze. At
present, it is only possible to winterize units which
do not have an auxiliary water tank. Units with
auxiliary water tanks must be stored in a heated
building when not in use.
ADDING ANTI–FREEZE TO YOUR UNIT:
1. Shut off the water supply. Disconnect the water
inlet hose from the front of your console.
2. Connect all high pressure hoses and tools
that may have water in them.
3. Fill the water box with approximately two
gallons of 100% glycol base anti-freeze.
4. Start the unit , turn water pump off and open the
tool valve pressure drops and water stops
lowing.
5. Turn the water pressure override switch to the
override position and start the unit. Turn the
water pump switch ON.
6. Open the tool valve until anti-freeze begins to
come out of the tool. Recover ALL anti-freeze
that comes out of the tools into an approved
container. We strongly recommend that you re-
cycle and re-use the anti-freeze.
Repeat this procedure with all the remaining
tools. After all tools and pressure hoses have
been filled with anti-freeze, disconnect and store
them.
Close the heat bypass valve by turning the knob
all the way clockwise.
7. Turn the water pump switch OFF. Attach the
winterizing loop hose with attachment, Part
#10-805380, to the solution outlet connection
and the water inlet connection. Turn the water
pump switch ON.
Allow the unit to run for approximately 3 minutes
with the winterizing loop hose attached.
8. Prime the chemical system with a 50/50 anti-
freeze/water mix. Insert the chemical inlet and
prime tubes into the anti-freeze container. Turn
the chemical valve to PRIME until antifreeze
begins to flow out of the prime hose.
Now turn the chemical valve to the ON
(CHEMICAL) position, making certain that the
flow meter indicates flow. Make certain that all
anti-freeze drains out of the chemical hose into
an approved container.
After 20 seconds, turn the chemical valve to the
OFF position.
9. Open the heat bypass valve by turning the
knob counter-clockwise. After 10 seconds,
close the heat bypass valve.
Hold switch in override position for 10 seconds.
10. After completing these procedures, shut the unit
down. The unit is now “winterized”.
LOOP HOSE
ATTACHMENT
WINTERIZING LOOP
HOSE ASSEMBLY, #10-805380