KNF N 813.3 AN.29DC-B, Перевод оригинальных инструкций по эксплуатации и установке

Страница: 31 / 40

Diaphragm Vacuum Pumps N 813 Servicing
Translation of original Operating and Installation Instructions, english, KNF 121240-121506 09/19 31
Fig. 20: Two-headed types Fig. 21: Four-headed types
Change the diaphragms, valve plates and sealing rings in the
following sequence:
a) Removing head connection(s)
b) Removing cover plate from housing
c) Removing pump head
d) Changing diaphragm
e) Changing valve plates and sealing rings
f) Refitting pump head
g) Refitting the cover plate
h) Refitting the head connection(s)
With the exception of removal and refitting of the cover plate (or
cover plates), and the head connections, all operations are to be
carried out separately for each head. This prevents the parts
getting mixed up (the ribbed plates are not identical).
The position numbers in the following text refer to figs. 18 to 21.
Proceed as follows:
Fig. 18: Pump elements (for all
pump types)
Fig. 19: Pneumatic Connection
(principle sketch)
Specification
Pos. Description
1 Housing
2 Intermediate plate
3 Ribbed plate
4 Hexagon socket head
cap screw
5 Cover plate
6 Valve plate
7 Sealing ring
8 Structured diaphragm
9 Diaphragm Spacer(s)
10 Connecting rod
11 Counter weight
12 Pneumatic connection .3
13 Union
14 Pneumatic connection .4*
15 Pneumatic connection .5**
*: N 813.4 AN_: 2 pieces
N 813.5 ANE: 1 piece
**: N 813.5 ANE: 2 pieces