95
Operation
3.9 Operating in Freezing Conditions
Shutdown
1. Allow the vacuum blower to operate for a
couple of minutes after shutting down the high
pressure and charge water pumps to clear
waste water from hoses and dry out blower
system.
2. Make sure the clean water and debris tanks are
drained immediately at the end of each shift.
3. Once the clean water tank is drained using
the main drain, open winterizing drain valve
mounted on the chassis frame below the water
tanks to drain the equalizing hoses and ttings
to completely drain the system.
4. All system hoses and the blast head assem-
blies should be drained of all water and/or lled
with an anti-freeze solution. (Non alcohol)
5. When winterizing the ultra high pressure
pump, refer to pump manufacturer’s proce-
dures for maintaining equipment in freezing
climates.
6. Open the drain valve at the charge water pump
and allow the hoses and pump to completely
drain. With the valve still open, activate the
pump briey to pump out any remaining water,
about a cupful. Then close the valve.
7. Pour 2 gallons of anti-freeze into the high pres-
sure pump stung box sump so it will drain to
the bilge pump sump system. Allow the bilge
pump to run until anti-freeze is visible at the
bilge pump hose tting in the debris tank.
8. Drain the vacuum canister immediately at the
end of each shift.
TO AVOID SERIOUS DAMAGE TO WATERBLASTING
HYDRAULIC COMPONENTS WHEN OPERATING IN FREEZING
TEMPERATURES OR TEMPERATURES BELOW 60 DEGREES
FAHRENHEIT (16
0
CELSIUS), IT IS NECESSARY TO OPERATE
THE HYDRAULIC SYSTEM AND OTHER WATERBLASTING
COMPONENTS INCLUDING THE BLOWER AND HIGH
PRESSURE PUMP, WITH THE ENGINE AT IDLE, UNTIL
THE HYDRAULIC FLUID REACHES A TEMPERATURE OF
60 DEGREES FAHRENHEIT (16
0
CELSIUS) OR ABOVE AS
INDICATED ON THE THERMOMETER IN THE RESERVOIR
SIGHT GAUGE.
Typical Clean Water Tank Main Drain Valve
Clean Water Tank Winterizing Drain Valve
Charge Water Pump & Drain Valve
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