Page 1 - General Troubleshooting Float Actuated LMPs
LMPFA-TS 0904-01
OBSERVATION
PROBABLE CAUSE
REMEDY
1. Liqui-Mover pump fails to fill.
1. Increase in liquid level in
receiver, possible flood in
receiver.
Obstruction in fill line, valve closed,
inlet check backwards.
Inspect fill line for closed valve, inlet
check in reverse, or obstruction in fill
line. Refer to Assembly & Parts List
Drawing.
2. Receiver empty,
Liqui-Mover pump level
fluctuating.
Receiver pressure greater than
pressure in discharge line.
If unit has been in operation for a
period of time without problems,
check for traps blowing through. If
new installation, receiver pressure
may be greater than anticipated. Back
pressure may be less than anticipated.
A 2-Way control valve may be
required in discharge line.
2. Liqui-Mover pump fills too
slow.
1. No liquid level in receiver.
Load to unit not as great as
anticipated.
No action required.
2. Receiver flooding.
Obstruction or restriction in fill line.
Inspect fill line for partially closed
valve or defective check valve.
Inspect fill line for proper size fittings
and pipe. Refer to Assembly and
Parts List Drawing for specific unit.
3. Receiver flooding.
Restriction in vent line, motive and
vent valve assembly out of
adjustment.
Inspect vent line for partially closed
valve, proper size fittings and pipe.
Refer to Assembly and Parts List
Drawing.
GENERAL TROUBLESHOOTING OF
FLOAT ACTUATED LIQUI-MOVER
PUMPS
