Edwards RV3 Instruction Manual

7. Fault nding
7.1 Introducon
A list of fault condions and their possible causes is provided in the following secons to
assist in fault-nding. If a fault cannot be reced using this guide, call our nearest
Service Centre for help.
7.2 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-lter (if ed) is blocked.
▪
The oil temperature is below 12 °C.
▪
The oil is too viscous.
▪
The oil is contaminated.
▪
The pump has seized aer long storage.
▪
The pump has been le to stand aer contaminants have been pumped and has
seized.
▪ The motor is faulty.
7.3 The pump has failed to achieve the specied performance (has
failed to reach ulmate vacuum)
▪ The pressure measurement technique or gauge head is unsuitable or gives an
incorrect indicaon of pressure. For example, a contaminated Pirani gauge can
indicate a pressure which is several mes higher than the actual pressure in the
system.
▪
The pump has been lled with the wrong type of oil.
▪ There is a leak in the vacuum system.
▪ The mode selector and gas-ballast control are set incorrectly.
▪
The oil-level is below minimum level.
▪
The oil is contaminated.
▪
The vacuum ngs are dirty or damaged.
▪
The inlet-lter is blocked.
▪
The pump has not warmed up.
7.4 The pump is noisy
▪
The motor fan-cover is damaged.
▪
The motor bearings are worn.
▪
The oil is contaminated with solid parcles.
03/2021 - ©Edwards Limited
Page 47A65201880_AA
A65201880_AA - Fault nding

Edwards RV3 Specifications

General

Brand	Edwards
Model	RV3
Category	Water Pump
Language	English