Replacing The Sound Absorbing Material; Life Of Bearings; Operation Problems - FPZ SCL K04 TD-MOR Instructions Manual

7.3

REPLACING THE SOUND ABSORBING MATERIAL

When replacing the sound absorbing material in the silencers, proceed as follows:
•
Undo the screws (1)
•
Disconnect the silencer housings (1)
•
Remove the sound absorbing material from
the silencer housings (2)
•
Recover the support mesh (2)
•
Replace the sound absorbing material and
assemble by proceeding in reverse order.
For the particular construction and use of the machine it is advisable to contact the FPZ service
centre for this type of assistance.
ATTENTION!
If maintenance or repair is carried out at another repair centre, make sure to contact FPZ After-Sales
Service for instructions and information about the parts to be replaced.
The machine must be completely vented, cleaned and rendered inert before being sent to a service centre.
NOTE FOR THE USER
7.4

LIFE OF BEARINGS

•
In normal operating conditions (values given in the SPECIFICATIONS) the machine's bearings should be replaced by FPZ
personnel after 25000 hours or 3 years, whichever comes first.
ATTENTION!
The unit's bearings must only be replaced:
if all the instructions, parts list, and the section/exploded view of the respective unit are available.
7.5

OPERATION PROBLEMS

Problem
F
The unit does not
start
F
G
G
Insufficient or no air
G
flow
G
F
Insufficient or no
differential pressure
G
F
F
Current absorption
higher than the
G
permissible value
G
G
2
Divided as follows: F for functional fault and G for serious fault
FPZ-MI-K-TD-MOR-USA-15-R03
1
Cause
Incorrect electrical wiring.
Unsuitable supply voltage.
The impeller is stuck.
The suction filter is clogged.
Wrong frequency (for inverter powered units).
Profile of impeller blades modified (due to
deposits on the profile).
Wrong rotation direction.
Leak in the system
Incorrect electrical wiring.
Supply voltage drop.
The suction filter is clogged.
The unit has accumulated deposits inside.
The unit is operating at a pressure and/or
vacuum higher than the permissible value.
Cure
Have the electrical connection checked by the
Technician, referring to the diagram in the terminal
box.
Make sure the supply voltage, measured at the motor
terminals, matches the rated voltage +/-10%.
Have the unit repaired by FPZ After-Sales Service.
Have the cartridge cleaned or replaced by the
Technician.
Correct the frequency.
Have the impeller checked by FPZ After-Sales
Service
Have the rotation direction reversed by the
Technician, switching around the two power supply
wires.
Find the leak and seal it.
Have the electrical connection checked by the
Technician, referring to the diagram in the terminal
box.
Have the supply voltage at the terminals restored
within the permissible values by the Technician.
Have the cartridge cleaned or replaced by the
Technician.
Have the unit cleaned inside by FPZ After-Sales
Service.
Operate on the system and/or control valve to
decrease the pressure differentials.
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