8 Trouble-shooting
61 of 68
Multitec A SX
A B C D E F G H Possible cause
Remedy
17)
X
Outer bearing rings of fixed bearing are
loose.
Clamp outer bearing rings axially.
X
Increased axial thrust
18)
Check rotor clearances, axial adjustment and
clearance on throttling bush/balance drum.
X
X
Insufficient or excessive quantity of
lubricant or unsuitable lubricant.
Top up, reduce or change lubricant.
X
Non-compliance with specified coupling
distance
Correct distance according to general
arrangement drawing.
X X
Motor running on two phases only
Replace the defective fuse.
Check the electric cable connections.
X
X X
Rotor out of balance
Clean the impeller.
Re-balance the impeller.
X
X X
Defective bearing
Fit new bearing.
X
X X
Insufficient flow rate
Increase minimum flow rate.
X
Incorrect inflow of circulation liquid
Increase the free cross-section
X X X
X
In case of parallel operation, check valve
defective or not installed.
Check.
X
Gland not packed correctly.
Packing material not suitable
Check.
X
X
X
Change in the free cross-section of the
balancing liquid return line.
Wear in balancing device.
Check the balancing line.
Check throttling bush/balance drum
clearances.
Summary of Contents for Multitec A SX
Page 1: ...Sprinkler Pump Multitec A SX Installation Operating Manual ...
Page 67: ......