Edwards GXS Series Instruction Manual page 44

Dry screw vacuum pump
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Note:
The connector kit for the Han® K 4/4 contains a choice of 5 different rubber inserts
that are suitable for the cables with various outside diameters. Select the most
suitable rubber insert for the size of cable that is to be used.
3.
Pass the cable through the cable gland and hood. Cables must be bare-ended
without ferrules to ensure correct clamping in the connector block.
4.
Before starting the assembly, use the hex (allen) key specified in the appropriate
figure to ensure that all the axial cones of the connector insert(s) are screwed fully
downward to completely open the contact chambers.
5.
Carefully remove the cable insulation to the exact dimension specified in the
appropriate figure. Do not twist the cable strands.
6.
Referring to the appropriate figure to identify the connections, insert each wire
completely into the contact chamber until the copper strands reach the bottom.
Keep the cable in position while applying the recommended tightening torque.
7.
Fit the earth (ground) wire to the protective earth connection.
Note:
The protective earth connection on the Han® 100 A and Han® 200 A connectors is
on the hinged frame. It may be necessary to use one of the cable shoes (supplied)
to fit the earth (ground) wire. Choose the most appropriate shoe for the size of
cable that is to be used.
8.
Screw the connector insert into the hood (using the hinged frame for the Han®
100 A and Han® 200 A axial screw modules) and then tighten the cable gland.
9.
If required, fit the coding pins to the connector block as shown in the appropriate
figure.
Note:
Harting (the manufacturer of the connector) states that after initial assembly, the
recommended tightening torque must only be reapplied once to avoid the damage
to the individual cable strands.
10.
The dry pumping system has an electrical connector locking mechanism - there are
two different types fitted depending on pump variant.
For the locking mechanism for all GXS160, GXS250 and GXS450 dry pumping systems,
refer to
Figure: Electrical connector locking mechanism for the GXS160, GXS250 and
GXS450
systems.
This locking mechanism requires the use of a suitable screwdriver to release. Refer to
Figure: Electrical connector locking mechanism for the GXS160, GXS250 and GXS450
systems. The dry pumping system is supplied with a protective cover (item 5) fitted and
the locking mechanism (item 1) may be applied. The protective cover is held in a place
by two locking levers. Follow these instructions to fit the electrical supply cable:
Slacken off the locking screw (item 3) by few turns to loosen the locking
mechanism if necessary.
Move the locking mechanism (item 1) to the left as far as possible, then lift it so
that it rotates around the pivot screw (item 2) and clears the left hand lever (item
4).
M58800880_H - Installation
Page 40

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