13
5-2 Troubleshooting
When troubles occur, take the measures as defined in the chart below.
Trouble
Cause
Measures to take
The motor is not running
Check
the
wire
connection
Motor is rotating backward Check
the
wire
connection
Low oil level
Refill the same oil in use
Refer to
“4. Lubricating oil
and refilling”
Clogged suction filter
Clean or replace filter, or
change oil to new oil
Refer to
“5-1 Suction filter”
Damage in the tubing
inside the pump (Twisted,
crashed, or disconnected)
Tighten or replace the
connecting parts
No oil discharged
from pump
Viscosity is too high, so
that oil can not be sucked
Recheck oil in use and
replace it to proper oil
Refer to
“4. Lubricating oil
and refilling”
No oil discharged from
pump due to any of above
causes
Refer to above measures
Foreign particle(s) at the
ball seating section of
relief valve
Contact LUBE
Pump discharge low
pressure due to relief valve
wrong pressure
setting
Contact LUBE
The
relief
valve
pressure has been
set before shipment
Pressure in main
tubing is not built
up
Air in the tubing
Take off closure plug(s) at
the end and operate
pump and bleed air in
tubing
