Saci pumps V-NOX 300 Manuel D'installation Et D'entretien page 19

Faults
8. The pump produces insufficient
flow.
9. The pump flow is not constant.
10. The pump turns the opposite
way when turned off
11. The pump vibrates with noisy
operation.
15- CONNECTION FOR MOTORS
1~230 V
Line
Checks
A. Blocked base valve.
B. Rotor worn or obstructed.
C. Insufficient suction pipe diameter.
D.Make sure the rotation is in the right
direction.
A. Excessively low suction pressure.
B. Suction pipe or pump partly obstructed
with impurities.
A. Loss of suction pipe
B. Base or retention valve faulty or
blocked partly open.
A. Check that the pump and the pipes are
properly fixed.
B. The pump shakes.
C. Air in the pump or suction manifold
D. Pump alignment not correct.
230 V
TRIANGLE connection
17
Solutions
A. Clean the base valve.
B. Replace the rotor or eliminate the
obstruction.
C. Replace the pipe with a wider one.
D. Invert two supply cables
B. Clean the suction pipe and the pump
A. Eliminate the problem
B. Repair or replace the faulty valve.
A. Block the loose parts.
B. Reduce the suction height and control
the load losses. Open the suction valve.
C. Purge the suction pipes and the pump.
D. Repeat the indications of section 7.2.
3~230/400 V
STAR connection
Line
ENGLISH
400 V