Ulvac PMB-040C - 4 Operation; Precautions for Operation

YK10-0015-DI-002-03
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4. Operation
4.1 Precautions for Operation
WARNING
●Never run the vacuum pump on blocking up the exhaust outlet, putting
any device that hampers the gas passage. There is a risk that pressure
in the pump rises, and the main body of the pump and the oil level
gauge might explode, or the motor become an overload.
●This product is not made as the withstand pressure structure.
Ensured pressure value of the pump shall be 0.03MPaG (0.3kgf/cm
2
G)
(Gauge pressure).
If any valve was put to a pipe after the Exhaust outlet, check and
ensure that it is open.
CAUTION
●Be sure to flow the coolant water during operation, Required coolant
volume shall be;
Cooling water level : 10 L / min or more
Cooling water temperature : 5°C ~ 30°C
●Shortage of the cooling water might give damage on the bearing, gear
and rod sealing, which results in contact of the rotor and casing and
operation stop.
CAUTION
●Be sure to pour oil.
If the oil level becomes lower than the lower limit during the operation,
the bearings, gears, shaft seals, etc. are damaged, causing leakage,
abnormal noise, overloaded motors, or a shutdown.
●When newly filling the mechanical booster pump with lubrication oil or
leaving the mechanical booster pump for a long time with lubrication
oil remaining inside, be sure to perform deaeration of lubrication oil
before operation.
If you operate this product without deaeration of the lubrication oil, a
large amount of bubbles may occur and enter the casing.
CAUTION
●During a trial run, the mechanical seals may cause a metallic noise of
high frequency. This is caused by a shortage of oil on the mechanical
seals.
In this case, stop the pump and, according to "3.6.2 Lubrication to
mechanical seal," pour oil. Then, a few minutes later, start it again.
CAUTION
● Depending on the use conditions, the pump oil may deteriorate in a
extremely short period of time.
It is recommended to perform the first replacement of the pump oil
within ten days and, after checking the degree of contamination of oil,
decide the oil replacement cycle.