8.
TROUBLESHOOTING
Tapflo LPX series
56
Rotor to body contact caused by
worn bearings.
Rebuild with new bearings and
lubricate regularly.
Rotor to Rotor Contact caused by
loose or not correctly timed gears.
This has caused severe damage to
components - rebuild with new
parts.
Rotor to Rotor Contact caused by
sheared keys.
This has caused severe damage to
components - rebuild with new
parts.
Rotor to Rotor Contact caused by
worn gear splines.
This has caused severe damage to
components - rebuild with new
parts.
Drive noise caused by gear trains,
chains, couplings, bearings.
Repair or replace drive parts. Check
bearings for damage and replace as
necessary.
Pump requires excessive power
(overheats, stalls, high current
draw, breakers trip).
Higher than expected viscosity
losses.
If within pump rating, increase drive
size.
Higher than expected pressures.
Reduce pump speed.
Increase line sizes.
Fluid is colder with a higher
viscosity than expected.
Heat fluid, insulate lines or heat
trace lines.
Increase line sizes.
Fluid sets in line and pump during
shutdown.
Insulate lines or heat trace lines.
Install a “soft start” drive.
Install a recirculating bypass system.
Flush system with a non-setting
fluid.
Fluid builds up on pump surfaces.
Replace the pump with more
running clearances.
Short pump service life.
Pumping abrasives.
Larger pumps at slower speeds.
Speeds and pressures higher than
rated.
Reduce speeds and pressures by
making changes in the system.
Replace pump with a large model
with higher pressure ratings.
Worn bearings and gears due to
lack of lubrication.
Check and replace bearing and
gears as necessary. Adjust
lubrication schedule to decrease
time between lubrication.
Misalignment of drive and piping
(Excessive over hung load or
misaligned couplings).
Check alignment of piping and
drive.
Adjust as necessary.
Summary of Contents for LPX Series
Page 59: ...9 PARTS LISTS Tapflo LPX series 59 9 3 Model 25 1 to 50 1 Pump Parts B exploded view ...
Page 61: ...9 PARTS LISTS Tapflo LPX series 61 9 5 Model 50 2 to 100 1 Pump Parts A exploded view ...
Page 63: ...9 PARTS LISTS Tapflo LPX series 63 9 7 Model 50 2 to 100 1 Pump Parts B exploded view ...
Page 69: ...Tapflo LPX series 69 ...