16
0698-501 B200 - 08/2020
en
7. Maintenance and servicing
!
WARNING
Danger of injury and intoxication when handling hazardous liquids!
►
Always wear protective equipment when working on the pump.
►
Empty the pump tube and, if necessary, the hose line and the nozzle completely.
7.1 Observance
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Only use a non-leaking pump tube:
The pump must be switched off and repaired immediately if liquid leaks out of the pump tube below
the handwheel (
→
Fig. 5).
►
If necessary, use leakage monitoring.
7.2 Maintenance
►
After pumping aggressive, tacky, crystallizing or contaminated liquids the pump tube must be flushed
and cleaned with an appropriate detergent. Follow the safety instructions for the detergent.
►
Only clean pump tube and motor outside the explosion hazard area.
For cleaning the pump made of stainless steel, the rotating pump part must also be removed from the
outer tube (
→
Fig. 6). Pump B200 PVDF cannot be disassembled for cleaning.
a) Release the hand wheel (right-hand thread) and detach the motor from the pump tube.
b) Unscrew the clamp connection and remove the container adapter.
c) Release the locking screws.
d) Press the rotating unit on the rotor side out of the outer tube.
►
Check o-ring and mechanical seal for damage.
Installation (
→
Fig.7)
a) Press the rotary unit on the coupling side into the outer tube.
b) Tighten locking screws.
c) Insert container adapter and turn clamp connection.
d) Firmly connect the motor and pump tube by means of the handwheel (right-hand thread).