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Maintenance
7.2 Maintenance work
Maintenance work:
Interval
Quarterly *
After approx. 4000 oper‐
ating hours
After approx. 5000 oper‐
ating hours
After 10,000 hours of ope‐
ration **
After approx. 20,000 oper‐
ating hours
7.3 Changing the hydraulic oil
Changing the hydraulic oil
34
Maintenance work
Check that the dosing head screws are tight.
Check that the discharge valve and suction valve are fitted tightly.
Check that the metering lines (discharge/suction side) are tight.
Check the oil level – check for oil escaping from the housing.
Carefully remove dust from the pump.
Check that the flow is correct: Allow the pump to prime briefly.
Only pumps with add-on power end or "without motor" and/or
n
with motor flange: Check the gear ring / double tooth (DZ) ele‐
ment of the ROTEX
®
coupling as per the manual. Open the
inspection window on the flange to check. Close it again!
If the coupling is OK, increase the maintenance interval to
4000 hours.
If the coupling is not clearly OK: call ProMinent Service.
n
ATEX pump only: Check the seals of the EDS 4448 pressure
switch at regular intervals - depending on the climatic conditions
and the feed chemical in respect of their serviceability and replace
if necessary.
Check the gear ring / double tooth (DZ) element of the coupling as
per their operating instructions.
When changing the hydraulic oil, pay attention to wear on the worm
gear. Have the power end repaired by ProMinent in the event of
increased wear.
Change hydraulic oil - refer to "Changing hydraulic oil" in this
chapter.
Diaphragm change - refer to "Changing the diaphragm" in the
"Repair" chapter.
Adhere to the motor manufacturer's recommendations - see oper‐
ating instructions for the motor.
* with normal loading (approx. 30 % of continuous operation).
With heavy-duty loading (e.g. continuous operation): Shorter intervals.
** with normal loading. With very unfavourable metering parameters:
Shorter intervals.
WARNING!
Risk of burns due to hot hydraulic oil
The hydraulic oil may become very hot when the pump
is exposed to extensive loading.
–
When draining oil, avoid contact with the oil running
out.
Personnel
Trained, qualified
personnel
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personnel
Trained, qualified
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personnel
Trained, qualified
personnel
Trained, qualified
personnel
Trained, qualified
personnel
Trained, qualified
personnel
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personnel
Instructed person
Instructed person
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