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Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999290 / 12/12/2016
Inspection and replacement of the internal overpressure safety valve at the manifold:
(only MD 4C EX VARIO / MD 4C EX VARIO + AK + EK)
Inspecting the overpressure safety valve at the outlet:
➨
Unscrew the overpressure safety valve at the outlet of the pump.
➨
Disassemble the overpressure safety valve and inspect
the parts for faultless condition, replace damaged parts.
➨
Reassemble the valve correctly.
➨
Screw the overpressure safety valve to the outlet of the
pump.
➨
Use an open-ended wrench (width 17 mm) to unscrew at
the pump heads the union nuts of the tubings which are
connected to the manifold (5x).
Elbow fitting (3x):
➨
Turn the fitting with an open-ended wrench (width 14 mm)
to detach the tubing from the pump head (1/4 of a turn at
maximum).
☞
Do not remove the elbow fitting from the pump head.
Straight fitting (2x):
➨
Pull the tubing off the fitting.
➨
Unscrew the two countersunk screws (A) at the cover
plate and remove cover plate together with distributor and
tubing.
MD 4C EX
(A)
Inspecting the overpressure safety valve
MD 4C EX VARIO
MV 10C EX VARIO
