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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.: 995652 / 08/10/2009
+
Notes regarding the assembling of the diaphragm
The set of seals is designated for diaphragm pumps with different technical performance.
Delivering pumps with square hole diaphragm starts in the second term of 2002, but not at the same time
for all types of pumps.
(Exception MZ 2D: Always diaphragm with round hole.)
Replacing a
diaphragm with round hole
, use the delivered diaphragm completely.
Replacing a
diaphragm with square hole
, remove the punched part in the centre of the diaphragm before
assembling.
Replacing a diaphragm with round hole
➨
Check for washers. Do not mix the washers from the differ-
ent heads. Make sure that the original number is reassem-
bled 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.
➨
Insert diaphragm support disc and new diaphragm.
Note:
Double diaphragm.
➨
Insert diaphragm clamping disc, apply a drop of adhesive
(OmniFit
®
50M or Loctite
®
243) to lowerside of screw head
and thread and screw diaphragm clamping disc, diaphragm
and diaphragm support disc to connecting rod.
➨
Use Phillips screw driver, remove countersunk head screw
in the centre of the diaphragm clamping disc.
☞
Note:
Screw is secured by adhesive to prevent it from being
detached. Clean screw or use new one (cat. no.: 639847).
☞
If the old diaphragm is difficult to separate from the support
disc, immerse assembly in naphtha or petroleum ether. Do
not inhale!
☞
Check diaphragm for damage and replace if necessary.
➨
To do so use Phillips screw driver to remove four counter-
sunk head screws and lift off housing plate with rating plate.
☞
Use petroleum ether or industrial solvent to remove depos-
its if necessary. Do not inhale.
OmniFit
®
and Loctite
®
are registered trade marks of Henkel Technologies