Clean The Motor Fan-Cover And Enclosure; Clean And Overhaul The Pump; Fit New Blades; Test The Motor Condition - Edwards RV3 Instruction Manual

A652–01–880 Issue Y
5.8

Clean the motor fan-cover and enclosure

If the motor fan-cover and enclosure are not kept clean, the air-flow over the motor can be restricted and the pump
may overheat.
1. Switch off the pump and disconnect it from the electrical supply.
2. Use a dry cloth and a soft brush to remove dirt and deposits from the fan-cover and enclosure.
5.9

Clean and overhaul the pump

Clean and overhaul the pump as described in the instructions supplied with the clean and overhaul kit (see
Section 7.3).
5.10

Fit new blades

Fit new blades to the pump as described in the instructions supplied with the blade kit (see
5.11

Test the motor condition

Test the earth (ground) continuity and the insulation resistance of the pump-motor, in accordance with local
regulations for periodic testing of electrical equipment.
The motor of single-phase RV pumps complies with IEC 1010–1. Edwards recommends that, to maintain compliance
with IEC 1010–1, the earth continuity is less than 0.1  and the insulation resistance is greater than 10 M.
If the motor fails these tests, the motor must be replaced.
5.12

Fault-finding

5.12.1

Introduction

A list of fault conditions and their possible causes is provided in the following sections to assist in fault-finding. If a
fault cannot be rectified using this guide, call the nearest Edwards Service Centre for help.
5.12.2

The pump has failed to start

The electrical supply fuse has failed.

The electrical supply voltage does not match that of the motor.

The outlet pipeline or the outlet-filter (if fitted) is blocked.

The oil temperature is below 12°C.

The oil is too viscous.

The oil is contaminated.

The pump has seized after long storage.

The pump has been left to stand after contaminants have been pumped and has seized.

The motor is faulty.

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Section 7.3).