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6.3 Removal of non-return valve
If a pump without non-return valve is required, the
valve can be removed as follows:
1. Cut off the legs of the valve guide using side-
cutting pliers or a similar tool. See fig. 7.
2. Turn the pump upside down.
3. Check that all loose parts fall out of the pump.
Fig. 7
SQE-NE is supplied without non-return
Note
valve.
The non-return valve can be fitted in a Grundfos
service workshop.
10
6.4 Fitting the cable plug to the motor
Warning
The motor plug must under no
circumstances be removed by the user.
The following description is exclusively
intended for service personnel.
If the motor cable is to be replaced, see
section
5.1
General.
The cable with plug must be fitted or
removed by an authorised Grundfos service
workshop or a similarly qualified person.
The cable plug supplied with the motor is factory-
greased. Check that the plug is greased correctly.
To fit the cable plug, proceed as follows:
1. Check that the cable is of the correct type, cross-
section and length.
2. Check that the mains on the location has correct
connection to earth.
3. Check that the motor socket is clean and dry.
Make sure that the loose gasket has been fitted.
4. Press the cable plug onto the motor socket.
The plug cannot be fitted wrongly. See fig. 8.
Fig. 8
5. Fit and tighten the four screws (1 - 1.5 Nm).
See fig. 8.
When the plug has been fitted, there must not be a
clearance between the motor and the cable plug.
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