Ulvac PKS-030 - Page 13

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5) When the pump is kept running for several hours, the oil temperature in
the case will be rise to about 70℃ at a room temperature of 20℃. If the oil
temperature exceed 70℃ when the gas ballast valve is kept closed, some
trouble might be suspected. Please stop the pump and contact ULVAC or
ULVAC's distributor at once.
6) If the pump does not start rotating, the pump cylinder might be filled with
oil. Open the leak valve to attempt to correct this problem.

8.2Pumpstop
1） Close vacuum valve [A].
2） Stop the motor and vent the pump. Open the leak-valve [B].

Note:
Makesuretheleakvalveisopenedwhenthepumpisstoppedor,in
thecageofapowerfailure,preventthepumpandvacuumsystemfrom
floodingwithoil.
Note:
Oilcirculation
Pump oil will be introduced into the filter case through the
oil-feedingsolenoidvalve.
1) PKS-016oil-flowcheck.
Removethefilterbodycap,Observetheoil-flow[SeeFig.4]
2) PKS-030orPKS-070oil-flowcheck.
Observetheoilfilterwindow.[SeeFig.5〜6]
Note:
Coolingwaterconnection
1)ThePKS-016pumpisair-cooled.
2)ThePKS-030orPKS-070pumpiswater-cooled,soyoumustconnect
thepumptoawatersupply.(Ref.Fig.3)
