2008 45 DSTOPTRS
D. WATER SYSTEM PURGE
The function of the water system purge is to purge all water from the system in freezing
weather. This assembly is mounted to the sweeper left front frame rail. A female quick
disconnect is to be supplies by the customer.
1. Drain the water tank completely. Drain the pre-filter bowl being sure NOT to lose
the rubber seal.
2. Start the auxiliary engine and run the water pump with one water switch on (i.e.,
Pick-Up Head Water) to drain the hoses until the low water light illuminates.
3. Turn off all water system switches and stop the auxiliary engine.
4. Attach a shop air line to the quick disconnect (supplied by customer). Check for
maximum 20 PSI line pressure to prevent damage to water system components.
(Do Not Exceed 20 PSI.)
5. Slowly rotate valve 90 degrees to the purge position. Turn the ignition to “ON”
position but DO NOT START engine. Turn on main water switch. Turn on one
water switch (i.e. Pick-Up Head Water). Wait until all water is purged then turn off
switch. Repeat the process for each system.
6. After all systems are purged, rotate valve back to “RUN” position, remove shop
air line and turn ignition off. The water system is now purged.
7. To re-prime, it may be necessary to increase engine speed to 1500 RPM for
pump to pick up.
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