EBARA A70W, Instruction Manual

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5.2 Operation
REMOTE / LOCAL and USE OF BUZZER can be toggled at any time. Select properly
according to the working conditions.
If Dipswitch No. 4 is ON, pump automatically stops when changed to remote mode.
WARNING
The pump casing and exhaust piping become extremely hot during
operation and for some time after stopping.
Keep pump and exhaust piping away from contact with personnel and
flammable substances.
Do not remove the pump cover during operation.
CAUTION
When the production process leads to reaction byproducts in the
pump or when the process handles corrosive gases, do not stop the
pump until after at least 30 minutes after stopping the flow of process
gases.
WARNING
Purge with N
2
gas for one (1) hour or more after the pump stops to
remove the residual process gas inside the pump.
CAUTION
The pump will remain at a very high temperature even after it has
stopped. Leave the cooling water running for about one (1) hour after
shutdown.
Shutting off cooling water immediately after the pump stops causes a
pressure rise in the cooling water piping, which may cause a water
leak.
[NOTE]
Do not pump process gases until the pump has run at least one hour.
If possible, wait four hours for the pump casing temperature to
stabilize before pumping process gases.
[NOTE]
In service observation mode “Always,” cooling water and dilution N
2
ALARMs can occur when the pump is stopped.
[NOTE]
The pump will not start while an ALARM/TRIP signal remains active.
Pressing START button will bring STARTFAIL to the display.
EBARA Corporation