Instruction manual

STP-200/300/400 Series Instruction Manual

7.2 Cooling the STP Pump

(See Figure 7.1.)

There is a method using an air cooling unit.

When performing baking, always cool the STP pump.

Also, when pumping gases, cool the STP pump.

7.2.1 Air Cooling Method

Use the air cooling unit (optional accessory).

Attach the air cooling unit using 4 screws at screw holes for legs (4-M8

, depth 16 mm).

(For the positions of the screw holes for legs, see Figures 16.1 and 16.2, "External

Appearance of the STP Pump.")

◇ Since the air cooling unit is attached using 4 screw holes for legs,

the base for securing the STP pump cannot be installed using screw

holes for legs (See Section 3.3.3, "How to Secure the STP Pump").

When using the air cooling unit, design your vacuum equipment so

that the STP pump installing flange at the vacuum equipment side

can withstand the torque generated by the abnormal STP pump.

◇ Check the rated voltage of the air cooling unit before use.

◇ Procure protective parts for the air cooling unit, such as an earth

leakage breaker and fuses, when using the air cooling unit.

◇ DO NOT apply excessive force to the cable for the air cooling unit.

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: JIS

7-3