Ulvac GR60, Инструкция по эксплуатации, Страница: 49 / 54

Instructions Manual － Multiple Roots Type Dry Pump GR60/90/180
YK09-0023-DI-003-02
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7.4 Trouble Check List
Trouble Cause Disposal method Remarks
The pump does not
rotate. The motor wire connection is
not correct. Check the wire connections.
3.7
The safety circuits, such as an
overload protective equipment,
are not set correctly. Set the safety circuit to the
motor specifications.
3.7
Foreign substances entered the
pump and the rotor etc. were
burned. Overhaul (Replacement of
cylinder, rotor, side cover)
7.3
After the exhaust of reactive
gas, the reactive products
accumulated in the pump while
the pump stops. Overhaul (Cleaning the inside of
the pump, removal of the
reactive products)
7.3
The power supply is not
connected. Connect to the power supply.
3.7
The power switch is not turned
to ON. Turn the power switch to ON.
3.7
An voltage error occurs in the
input power supply. The rated voltage ±10%.
3.7
The overload protective
equipment works.
Remove the cause of the
activation of the overload
protective equipment.
3.7
Motor failure Replace the motor.
Moisture, solution, etc. were
sucked and accumulated in the
pump. Rust occurred. Overhaul (Cleaning the inside of
the pump, removal of the
reactive products and rust)
7.3
Other parts in the pump were
damaged. Overhaul (Damaged parts
replacement)
7.3
There is unusual
sound. The motor's direction of rotation
is opposite. Make wire connections again to
correct the direction of rotation.
3.7
The cooling water does not
circulate. Overhaul (Replacement of
cylinder, rotor, side cover)
3.6
No oil. Or the oil level is lower
than the lower limit of the oil
level gauge. Overhaul (Replacement of
cylinder, rotor, side cover)
3.2
Foreign substances are
included in the pump.
Removal of foreign substances,
disassembling & repair
3.2, 7.1
There is noise (rattling noise) in
synchronization
with the
number of revolution per
minutes.
Overhaul (Re-adjustment of
timing)
There is machine noise (rasping
noise) all the times. Overhaul (Replacement of
bearings and gears)
There is metallic noise of high
frequency. Stop the pump and supply oil to
the mechanical seal.
3.2
Other parts in the pump were
damaged. Overhaul (Damaged parts
replacement)
7.3