ENGLISH
15
12.1- Periodical checks
In its normal operation, the electro-pump requires no maintenance. However, it is recommendable to make a
periodical check of the absorbed current, the manometric drive pressure with the mouth closed and at maximum
flow, in order to locate faults or wear in time. If possible, have a programmed maintenance plan to achieve a
problem-free operation without long, costly repairs and causing minimum pump expense and downtime.
13- MODIFICATIONS AND SPARES
Any modification made without previous authorisation releases the manufacturer from all liability. All spares
used in repairs must be original, and all accessories must be authorised by the manufacturer in order to
guarantee complete safety for people and the operators of machines and installations that use the pumps.
14- TROUBLESHOOTING
A. Check the protection fuses
B. Check the electrical connections
C. Make sure the motor is receiving power
A. If they are burned, replace them.
B. If the problem is solved immediately, it
means the motor is short-circuited.
1. The motor does not start and
makes no noise
A. Make sure the supply voltage
corresponds to the voltage on the plate.
B. Make sure the connections have been
made correctly.
C. Check the terminal box for all phases.
D. The spindle is blocked.
B. Correct all possible errors
C. If not, reset the missing phase.
D. look for possible pump or motor
obstructions.Eliminate the obstruction.
2. The motor does not start, but
makes a noise.
A. Check the power supply, which may be
low.
B. Check for possible rubbing between
moving and fixed parts.
C. Check the state of the bearings
B. Eliminate the cause of the rubbing.
C. Replace worn bearings.
3. The motor turns with difficulty
Faults
Checks
Solutions
manual V-nox 2010_A5 21/12/10 11:00 Página 17
