M588-00-880 Issue E
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Installation
To use the dry pumping system with a power supply in a different voltage range to that specified on the rating plate,
contact Edwards.
The dry pumping system is protected from motor overloads and short circuits by solid state electronics. The power
wiring between the dry pumping system and the electrical installation must be protected. When selecting input fuses,
refer to Section 2.5. Pump rating information can be found on the label on the rear of the pump.
To connect the electrical supply to the dry pumping system through an ELCB (or RCD depending on territory) it must
be suitable for protection of equipment with a d.c. component in the fault current, for short duration switch-on
surges and for high leakage current (for example, type B, according to EN50178).
The secondary protective Earth (ground) is required in case of failure of the primary earth and because pump filters
can cause high earth leakage currents, refer to Table 8.
3.6.1 Mains supply cable connection
Three different types of electrical supply connector are used on GXS dry pumping systems. A kit of parts containing
the correct mating half connector is supplied with each dry pumping system. Refer to Section 2.5 for details of the
connector types and the dry pumping systems to which they are fitted. Information for wiring each of these different
connectors is given in Figures 7, 8 and 9.
Referring to either Figure 7, 8 or 9 for the appropriate electrical connector for the dry pumping system, use the
following instructions to make the electrical supply cable:
1. Refer to Section 2.5 for cable sizes and type to determine the most appropriate cable for the dry pumping
system.
Note: The kit of parts for dry pumping systems with the Harting Han® 100A and Han® 200A axial screw modules
may contain a choice of inserts suitable for different wire sizes as detailed in Table 9. Ensure that the
correct insert for the size of wire that is to be used is selected.
2. Screw the cable gland onto the hood.
Note: The connector kit for the Han® K 4/4 contains a choice of 5 different rubber inserts that are suitable for
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 as shown in the appropriate figure.
Note: The Protective Earth connection on the Han® 100A and Han® 200A 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® 100A and Han® 200A axial screw
modules) and then tighten the cable gland.
The Harting connector is not approved for connection and disconnection under load.
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