HARBEN CENTURY, Service Manual

Page: 42 / 83

Flowplant Century Pump Manual
3.3.6 To Antifreeze a Unit Without an Antifreeze Tank
i. Prepare 5 gallons (or larger quantity if required) of 30% to 50% anti-freeze solution.
ii. Drain the water tanks.
iii. Pour the anti-freeze solution into the break tanks.
iv. Remove any jet or accessory from the end of the high pressure hose.
v. Ensure the high pressure selector lever is in the dump (or off) position. Start the
engine and allow to run for 1 minute.
vi. Holding the outlet end of the hose, move the selector to high pressure position and
allow the engine to run until the anti-freeze solution can be seen coming from the high
pressure hose.
vii. Stop the engine. The unit is now anti-freezed.
3.3.7 To Remove Antifreeze from a Unit Without an Antifreeze Tank
Note: During this procedure, carry out the air bleed procedure detailed in Para 19, if
necessary.
i. Drain any anti-freeze solution from break tanks into a container.
ii. Fill break tanks with water.
iii.
Place the outlet of the high pressure hose into the container.
iv.
Place the selector lever in the high pressure position, and whilst holding the high
pressure hose, start the engine.
v.
Run the engine until all solution is returned to the container and clean water is seen
flowing from the hose. The unit is now ready to use
.
3.3.8 To Antifreeze a Unit with an Antifreeze Tank Fitted
i. Ensure the anti-freeze tank is full of 30% to 50% anti-freeze solution.
ii. Turn the 3-port valve to the anti-freeze position and open valve on the anti-freeze tank
(if fitted).
iii. Remove any jet or accessory from the end of the high pressure hose.
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