User guide

page 83 of 102
The replacement of the diaphragm and the replacement of the valves can
be carried out separately.
+ To replace the valves, remove the head covers of one side of the pump
along with the assembled valve heads and ttings.
+ To maintain the diaphragms, the valve heads and the ttings need not
be disassembled. The head covers can be removed along with the as-
sembled valve heads and ttings.
+ Service only one side of the pump at a time to avoid the mixing of
parts.
Cleaning and inspecting the pump heads
Disassemble the exhaust vapor condenser
EK:
➨ Loosen the union nut at the inlet of the ex-
haust vapor condenser.
➨ Remove the 4 screws afxing the counter
holder of the exhaust vapor condenser with
a Torx driver T10. Remove the exhaust va-
por condenser. In doing so pull the PTFE
hose out of the inlet of the exhaust vapor
condenser.
➨ Remove catchpots (9) at inlet and outlet
(see ”Use and operation”, pg. 31).
➨ Loosen the union nut at the vacuum con-
nection of the controller.
➨ Pull the PTFE tubing off the vacuum con-
nection.