Table of Contents
Advertisement
11
Troubleshooting
Safety notes
WARNING!
EX pumps in areas at risk from explosion
–
Ensure correct operation in general (no leaks, unusual
noises, high temperatures, unusual smells etc.), particu‐
larly of the drive and bearings.
–
Do not allow the pump to become hot due to a lack of oil!
Regularly check lubricated metering pumps for the exis‐
tence of lubricant, for example by checking the liquid
level, visual leak control etc. If oil is leaking, examine the
leakage point immediately and eliminate the cause.
–
When cleaning plastic components, ensure that no elec‐
trostatic charges are generated by excessive friction. -
see warning label.
–
Replace wear parts, such as bearings, as soon as unac‐
ceptable wear is detected. (The nominal service life
cannot be calculated with lubricated bearings).
–
Use genuine spare parts for replacement.
–
Only perform tests and repairs in compliance with DIN
EN IEC 60079-17 and only permit "experienced per‐
sonnel who have the requisite knowledge" to perform the
work.
WARNING!
Fire hazard with flammable media
Only with combustible media: These may start to burn when
combined with oxygen.
–
During filling and draining of the liquid end, an expert
must ensure that feed chemical does not come into con‐
tact with oxygen.
WARNING!
Danger of an electric shock
Personnel working on electrical parts can be electrocuted if
all electrical lines carrying current have not been discon‐
nected.
–
Disconnect the supply cable before working on the motor
and prevent it from being reconnected accidentally.
–
Any separately driven fans, servo motors, speed control‐
lers or diaphragm rupture sensors fitted should also be
disconnected.
–
Check that the supply cables are de-energised.
WARNING!
Warning of dangerous or unknown feed chemical
Should a dangerous or unknown feed chemical be used: It
may escape from the hydraulic components when working
on the pump.
–
Take appropriate protective measures before working on
the pump (e.g. safety glasses, safety gloves, ...).
Observe the safety data sheet for the feed chemical.
–
Drain and flush the liquid end before working on the
pump.
Troubleshooting
53
Advertisement
Table of Contents
