STP Series Turbomolecular Pump
INSTALLATION OF THE STP CONTROL UNIT
3.3 How to connect the cables
WARNING
When connecting/disconnecting cables, always power off the STP pump (switch the
MAIN POWER to "OFF") and isolate (Lockout/Tagout) the electrical energy source,
water and gas, and other energy sources on the vacuum equipment. Failure to do so
may result in the inadvertent rotation of the STP pump which may result in an
accident, an electric shock or damage to equipment. Moreover, an accident caused
by water leaks or gas leak may occur.
WARNING
DO NOT remove the connecter while the pump is rotating. The voltage might be
output to connector according to the rotational speed, and it causes the electric
shock or the failure.
CAUTION
Use the STP connection cable and the power cable that Edwards has specified. The use of other
cables may result in product damage.
The STP connection cables and power cables differ depending upon the pump model. Refer to
Section 3.2, "Cable connection" or the STP Control Unit Instruction Manual (C) for details.
CAUTION
Confirm the power voltage on the label. Connect the power cable securely to prevent incorrect
wiring.
CAUTION
DO NOT place heavy objects on the cables or bend them excessively. If any problem occurs in
cables, connectors or terminals, the STP pump may not function normally.
DO NOT apply voltage to each connector pin and DO NOT cause any short-circuiting between
pins.
Install cables so that personnel are not exposed to risk of tripping or falling.
CAUTION
With each connector align the position of the guide key of the connectors and insert vertically so as
not to bend the pins. If a pin is bent, not only may the connector not function normally, but it may
make the pins contact, resulting in a malfunction. Lock and securely tighten each connector and
screw.
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