‐12‐
4.2 Start up Operation
Close the pump vent valve (B); open the shut-off valve (A) to inlet port of the pump, then
turn on the power switch to start operation. The pump begins running(see Fig-5).
① Firing hazard. Do not touch the motor or the pump body as these surface
temperature should be higher (70~80°C).
② Operating the pump at high-pressure region must be generated oil mist from
exhaust port. Attach the oil mist trap or connect the duct to exhaust oil mist
If the pump rotation is not so smooth, take action needed as described below.
① Check oil quantity, and charge proper quantitative oil.
② When stopping the pump for long term (3days or more) at low temperature, pump
oil will come into the pump cylinder. (At end of former operation, vented air
into the pump may also cause same situation) If restarting the pump at this
condition, over load protector may be operated. Then, carry out several
start-stop operations in a short time cycle.
After operating the pump for several hours, oil temperature inside the pump may
be risen up to 70 ~80°C. If the temperature is over this, the pump may have
troubles. Maintain the pump, or contact ULVAC KIKO ,Inc.