STP-301/451 Series Instruction Manual
3
◇ NEVER use any gas that is not specified as usable in this Manual. The use of such gas may
corrode the STP pump and damage it.
◇ A hazardous live voltage may exist at connector/terminal that marked .
DO NOT touch the terminal. Doing so may result in electric shock.
When operating connection/disconnection to terminal, always power OFF the STP pump
(Switch the breaker "OFF").
◇ Always check the STP pump has stopped, then turn OFF the primary power (switch the
breaker "OFF") and isolate the electrical energy source (Lockout/Tagout) on the vacuum
equipment before proceeding to any of the following operations. Failure to do so may cause
the STP pump to rotate accidentally, which may injure operators seriously or result in electric
shock. Moreover, 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.
• Connect or disconnect cables;
• Perform maintenance and inspections such as replacement of fuses as well as
inspections of deposit and/or the air cooling fan; or
• Perform investigations into probable causes and action/measures taken in the event of
occurrence of a problem.
◇ DO NOT perform the insulation test (insulation resistance test and withstand voltage test) to
the STP control unit and STP pump. When performing the insulation test to your equipment,
turn "OFF" the STP control unit. The varistor for the power supply line protection is installed
to the STP control unit. DO NOT perform the insulation test with the varistor installed.
Doing so may result in product damage.
◇ When removing or installing the pump or at maintenance and inspection, follow the
precautions below. Failure to do so might hurt your back or cause injuries due to occurrence
of an accident such as fall.
• Use a crane or the like when lifting the heavy product of 18kg or more.
• When lifting by hands for unavoidable reason, two or more people must always conduct
it.
• When lifting STP control unit with handles, support bottom of STP control unit, do not
have only handle.
◇ When "emergency off" (EMO) circuit is installed in the vacuum equipment, consider the
following to stop the STP pump safely when the EMO circuit operates.
• When the EMO circuit operates, atmosphere might be introduced in the STP pump
depending upon the backing pump. Unite the exhaust gas system to prevent
atmosphere from being introduced into the STP pump when the EMO circuit operates.
(example: shut the valve) When atmosphere is introduced into the STP pump, the touch
down bearing may not operate normally.
◇ Install the STP control unit not only by fitting it with the front panel fitting screws but also by
supporting it from the bottom side.
Fitting the STP control unit with the screws only cannot sustain its weight, and therefore
resulting in product damage.
◇ Always use the STP pump and STP control unit with same model name, which are specified
on their own nameplate. If use the units having different model names, they may not be used.
In the latter case, contact service office. If you use the units having the same model name
but different serial numbers or change the length of the STP connection cable, the tuning is
required. They may not function normally when they are used without tuning. Once tuning is
completed, re-tuning is not required unless the configuration (the STP pump serial number,
the STP control unit serial number, and the STP connection cable length) is changed.
To Next Page
Loading...
Need help?
General
