Watson-Marlow SPS 600 - Manual (Page 16)

Revision 4.1 / March 2014 16
Error Cause Remedy
Rotor has wear on one side Rotor not tightened correctly on
installation Tighten Shaft Nut firmly on block
Adjusting dimensions changed after
working on the Bearing Housing Check and correct the adjusting
dimensions
SPS 600 = 27,5 mm + 0,1 mm
Pump not clean after CIP
cleaning
Cleaning regulation not complied
with Choke on the pressure side
Check differential pressure 3-4
bar
Rotor has seized on Liner
Rotor not correctly tightened Tighten Shaft Nut firmly on block
Temperature too high
(thermal expansion) Choose Liner with larger
tolerances
Purging between housing
and Power Frame leaking
O-ring in the power frame missing or
defective Install or replace O-ring
Water or pumped material
in the Bearing Housing
Purging pressure too high Purging must be pressureless
(attach pressure reducer, max.
0.1 bar)
Leakage bores closed Check leakage bores for free
passage, replace shaft seals on
pump and power frame
Front Support has seized
on Rotor
O-ring in the front bearing missing or
worn Install or replace O-ring
Front bearing wrongly installed Examine front bearing for
damage and install in correct
position
Product is leaking from the
Bearing Housing openings Sealing system in the pump is
leaking Inspect and if necessary replace
the sealing system and clean the
rinsing channels
Pump aggregate subject to
vibrations Speed of the (drive) motor is too
high Lower the speed of the (drive)
motor
Smells and smoke coming
from the pump Pump is running dry Stop the pump immediately.
Check inner parts for damage
and replace if necessary
Corrosion Corrosion occurs Eliminate corrosion and varnish
or use spray oil