Safety Interlocks - EBARA EV-S20 Instruction Manual

x
（ ）

Safety Interlocks

WARNING Check Safety Interlock functions periodically (every 6 months)
to confirm the interlocks will work correctly.
N F L
ITROGEN LOW OW
A normally open flow switch breaks when nitrogen supply to the pump (oil
bearing(s) and inter stage injection) drops below its factory set point, opening the
motor starter relay(s) and shutting down the pump. Restoration of sufficient
nitrogen flow permits restarting the pump.
M O
OTOR VERLOAD
Motor thermostat protect the pump motor from overheating due to extended current
draws in excess of the motor rating. Under a persistent overload condition, motor
thermostat opens a contact, which interrupts the motor run circuit. A brief cool
down interval permits restarting the pump.
EBARA
CORPORATION
PM10U