KNF NF 1.300 EX, Инструкции по эксплуатации и монтажу

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Diaphragm liquid pump NF 1.300 EX Troubleshooting
KNF Flodos AG BA_NF1.300EX_EN_05_152146
English translation of original Operating and Installation Instructions
25
9. Troubleshooting
WARNING
Improper repairs and changes to explosion protected
machines can create a danger of explosion.
➔
Observe national and international regulations
regarding electrical equipment whenever per-
forming servicing and repairs.
➔
Any work that could affect the explosion protec-
tion must be completed by the manufacturer.
These tasks include, for example, repairing the
stator or rotor coil, repairs to the terminals, and
repairs on the ventilation system.
DANGER
Risk of electric shock, danger of death
➔
Disconnect the pump from the power supply
before working on the pump.
➔
Make sure that the pump is de-energised.
➔
When troubleshooting, also observe the Operating and Instal-
lation Instructions for the drive motor.
Pump does not work
Possible cause Fault remedy
Pump not connected to mains
power supply.
➔
Connect pump to mains supply.
Power supply is not switched
on.
➔
Switch on power supply.
Connections or hoses are
blocked.
➔
Check connections and hoses.
➔
Remove blockage.
External valve is closed or filter
is clogged.
➔
Check external valves and filters.
Diaphragm, valve plates or
seals are worn
➔
Replace diaphragm, anchor valves and seals
(see Section 8.3).
Tab. 17
Pump is not priming
Possible cause Fault remedy
Suction side of pump not con-
nected.
➔
Connect the suction side of the pump.
Liquid in the container is too
low.
➔
Fill container.
Hose connections are not leak-
tight.
➔
Secure transition joints between hose and connections with
clamps or clamping elements.
System valve is closed or filter
is clogged.
➔
Open the peripheral valve.
➔
Clean filter.
Pump head is filled with gas.
The system is unable to handle
the pressure on the pressure
side.
➔
Reduce pressure at pressure side.
Particles in the pump.
➔
Clean the pump head (see Section 8.2).