Hog Technologies STRIPE SH7500, Operation Manual

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Section 5 - Scheduled Maintenance
5.20 Winterization &
Storage Procedures
When operating the truck in freezing tempera-
tures, it is extremely important to properly win-
terize the water and vacuum systems whenever
the truck is shutdown.
Vacuum and UHP System Shutdown and
Winterizing
Water freezing in vacuum system components can
cause serious damage to the blower, silencer, filter
separator, drain valves and other vacuum system
components. Water freezing in UHP components
can cause serious damage to pumps, filter canis -
ters, valves and other UHP system components.
It is important to follow the proper procedure when
shutting down the vacuum and UHP systems dur-
ing cold weather operations or for winter storage
to ensure all water is removed from critical areas
and those systems are protected with antifreeze.
Completely draining the UHP and vacuum systems
is difficult and time consuming. Consequently,
circulating antifreeze through the system is the
preferred method to winterize the water blasting
system.
For trucks operating daily during freezing weather,
this method provides much quicker startup and
shutdown procedures. The procedure requires
a 50/50 mixture of water and glycol based RV
potable water system antifreeze to be circulated
through the system to protect components from
freezing.
35 to 40 US gallons (132 to 152 liters) of premixed
antifreeze at a 50/50 water antifreeze ratio is re-
quired to properly winterize the UHP and vacuum
systems. Make sure you have enough antifreeze
on hand before starting the winterizing procedure.
CAUTION
NEVER USE ALCOHOL BASED ANTIFREEZE SOLUTIONS
TO WINTERIZE THE WATER BLASTING SYSTEM. USING
ALCOHOL BASED ANTIFREEZE SOLUTIONS TO WINTERIZE
THE HIGH PRESSURE WATER SYSTEM WILL DESTROY THE
SEALS AND O-RINGS
Use the following procedure to shutdown and
winterize the water blasting system:
1. Shutdown high pressure water to the blast
head by turning off the DUMP VALVE 40K
switch.
2. Stop the truck and set the parking brake.
3.
Turn the HEAD ROTATION switch off.
4. Reduce the engine speed to idle.
5. Allow the vacuum blower to operate for a
couple of minutes to clear waste water from
hoses and dry out the vacuum system.
6. Turn the DIRTY WATER switch OFF.
7. Follow the Shutdown Procedure to shutdown
the waterblasting system and place the truck
in the service position.
8. Drain all water from the clean water tank,
wastewater bladder and debris tank.
9. Open the clean water fill valve and allow all
water to drain from the fill pipe.
10. If the machine will be shut down for an ex-
tended period, dump the debris tank and com-
pletely clean the tank with clean fresh water.
Make sure to thoroughly flush the drain valve
and allow all water to completely drain from
the tank and valves.
Debris Tank & Wastewater Bladder Drain Valves