Heidolph VAC control automatic - Manual (Page 57)

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11.2. Replace diaphragm and valve
All bearings are sealed hermetically and do not need any more lubrication. The pump itself is
maintenance-free. Valves and diaphragms are wear parts. As soon as pressure drops you should
clean and check housing, diaphragms and valves for cracks.
From case to case it make sense to clean and inspect pump heads in regular intervals. Normal
service life of diaphragms and valves is > 8000 hours.
 Continuous feeding of fluids and dust will harm diaphragm and valves. Avoid condensation in
pump, as well as accumulation of dust.
Pumping corrosive gasses and vapors or in case of deposits in the pump, such maintenance work
should be done more frequently (by user's experience).
 Regular maintenance will increase pump's service life and protect operator and environment.
Before connecting maintenance work, disconnect pump from system, and pull mains plug. Allow
pump to chill. Take adequate action to avoid pump running in disassembled condition.
Did you pump hazardous or corrosive gasses ?
 Take precautions (protective garments and goggles), to avoid breathing and skin contact.
11.2.1 ROTAVAC valve control
Seal kit (diaphragms and valves) for ROTAVAC valve control
11-300-005-39
valve 23-30-01-01-89
diaphragm 23-30-01-01-90
special spanner, size 40/4 02-07-02-01-12
Tooling:
-
Phillips screwdriver # 2
- open end spanner, SW 15/17
- hex pin, SW 5
- special spanner, size 40/4