56
MAINTENANCE IN COLD CONDITION
Infuse anti-freezing fluid
・
If the temperature around the pump could be subzero,
the inside of the pump can be frozen. In this case, the
water pump or the vacuum pump may not be worked.
And also the pump unit including engine and muffler may
be damaged or broken.
・
In order to prevent internal corrosion and freeze damage
by the water in the pump, drain all the water from the
pump after each use.
・
After draining the water, put antifreeze fluid into the
pump and vacuum pump.
Pump unit
1. When storing the pump, drain all the water
from the pump. Open the pump drain valves,
the muffler drain valve and the air valve for
drainage, and completely drain the water
from the pump.
2. Close the pump drain valves, the muffler
drain valve. Install the suction port cap.
(Keep the air valve for drainage opened.)
3. Insert a plastic tube to the air valve which is
for assisting water drainage. Put the plastic
tube into the antifreeze liquid, and also put a
plastic tube which comes from the vacuum
pump (through the lower-side cover) into the
antifreeze liquid (180ml/0.048gal(US) ~
200ml/0.053gal(US) / undiluted solution) in a
container.
12
Air valve
Open
Suction port cap
Close
Open
Close
Open
Drain valve
Plastic tube
Antifreeze fluid
CAUTION
Air valve
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