VACUUBRAND ME 4R - Manual (Page 15)

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.: 999122 / 02/09/2009
page 15 of 21
Replacing the diaphragm
rod
diaphragm support disc
head cover
diaphragm
diaphragm clamping disc
housing cover
valve
housing
➨ Use face wrench to remove diaphragm support disc.
➨ Check for washers under support disc. Do not mix the wash-
ers from the different heads. Make sure that the original
number is reassembled at the individual pump head.
☞ Smaller number of washers: The pump will not attain ulti-
mate vacuum. More washers: Clamping disc will hit head
cover; noise or even blockade of the pump.
➨ Position new diaphragm between diaphragm clamping disc
with square head screw and diaphragm support disc.
☞ Make sure that the square head screw of the diaphragm
clamping disc is correctly seated in the guide hole of the
diaphragm support disc.
☞ Note: Double diaphragm. Put the two diaphragms together
with the printed sides outwards.
➨ Use face wrench with torque indicator (recommended:
face wrench with torque indicator from VACUUBRAND,
Cat.-No.: 637580) to assemble diaphragm clamping disc,
diaphragm and diaphragm support disc (and eventually
washers) to the connecting rod.
☞ Make sure that the square head screw of the diaphragm
clamping disc is correctly seated in the guide hole of the
diaphragm support disc.
Optimum torque for the diaphragm support disc: 6 Nm.
☞ The optimum torque is achieved if the pointer in the handle
of the VACUUBRAND face wrench shows to the longer mark-
ing line.