Document No.
Revision
-
VS PD03 Scroll Pump and Components Replacement
Page
16
of 17
699910017 A
4. Remove the pump head by (Figure 16: Pump Head Removal):
Figure 16: Pump Head Removal
a. Making a mark (M) on the head plate (3), intermediate plate (2), and housing (1) with a felt-tip pen.
b. Undoing the 4 screws (4) in the head plate and lifting the head plate, with the intermediate plate,
off the pump housing.
c.
For models with:
•
DC motors (no cooling fan):
Removing the cover (6) from the pump housing (1) by inserting a
screwdriver into the slots on the sides, and prying the cover off (with care the adhesive gasket between
cover and housing may be reused).
•
No fan:
Reference is made to turning or holding the cooling fan, the necessary operations must be
carried out by turning or holding the counterweight (16).
5. Change the diaphragm by (see Figure 16: Pump Head Removal):
a. Turning the fan to bring the structured diaphragm (9) to top dead center.
b. Lifting the edge of the diaphragm and, gripping it on opposite sides, unscrewing it by turning
counterclockwise.
CAUTION
Ensure that the disc s spring (12) and diaphragm spacers (11) on the threaded
portion of the diaphragm do not fall into the housing.
c.
Taking the disc spring (12), diaphragm spacer(s) (11), and diaphragm support (10) off the threaded
portion of the diaphragm and retaining them.
d. Ensuring that all parts are free from dirt and clean them, if necessary.
e. Placing the diaphragm support, diaphragm spacer(s), and disc spring, in that order, on the thread
part of the new diaphragm. The concave side of the disc spring must be towards the diaphragm.
Summary of Contents for VS PD03
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