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.
WARNING!
Danger of an electric shock
When working on the motor or electrical auxiliary equipment,
there is a danger of an electric shock.
– Before working on the motor, take note of the safety
instructions in its operating instructions!
– Should external fans, servomotors or other auxiliary
equipment be installed, these should also be discon‐
nected and checked that they are voltage free.
Third party spare parts for the pumps may lead to problems
when pumping.
–
Use only original spare parts.
–
Use the correct spare parts kits. In case of doubt, refer
to the exploded views and ordering information in the
appendix.
Interval Maintenance work Personnel
After approx. 5,000 oper‐
ating hours
Change gear oil - refer to "Changing gear oil" in this chapter. Instructed personnel
Quarterly Check the oil level.
Quarterly*
n Check that the metering lines are fixed firmly to the liquid end.
n Check that the suction valve and discharge valve are correctly
seated.
n Check that the dosing head screws are tight.
n Check the condition of the metering diaphragm - see
Ä ‘Check
the condition of the metering diaphragm’ on page 32
.
n Check that the flow is correct: Allow the pump to prime briefly.
n Check that the electrical connections are intact.
Technical personnel
* Under normal loading (approx. 30 % of continuous operation).
Under heavy loading (e.g. continuous operation): shorter intervals.
The diaphragm is a wearing part, the service life of which is dependent
upon the following parameters:
n System back pressure
n Operating temperature
n Feed chemical properties
Standard liquid ends:
Check the condition of the metering dia‐
phragm
Maintenance
32
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