Watson-Marlow 701 - Manual (Page 9)

8 Troubleshooting
Should the pump fail to operate, make the following checks to determine whether or not
servicing is required.
 Check the mains supply is available at the pump.

Check that the pump is not stalled by incorrect fitting of tubing.
9 AC Motor maintenance

Remove any dust deposits from the fan cover to avoid overheating.

Ensure that the bearing cage is packed to about 1/3 with evenly distributed lubricating
grease.

Suitable lubricant: Mobilux 2 (-30°C-60°C) or similar.
10 Gearbox maintenance

Change lubricant every 10,000 working hours or after 2 years.

Combine a lubricant change with a thorough cleaning of the gear unit.

Extreme working conditions (high air humidity, aggressive media and large temperature
variations) will reduce the interval between lubricant changing intervals.

Suitable lubricant: Mobil XMP 220 (mineral -5°C-40°C) or similar.
Belt variator maintenance

Pulleys are supplied with permanent grease packing. No refill is necessary. The variator
should occasionally be run over its full range to apply a grease coating to the full track.

The control spindle should be cleaned and greased occasionally.
Do not under any circumstances wire switches directly across any of the
phases of a 3-phase supply. If in doubt disconnect the pump
immediately!
Do not connect ancillary switches to the terminal box of a flameproof
motor unless the switch has a suitable Ex rating for the zone area in
which it is to be mounted.
Always check to ensure that an EEx-d motor gearbox is suitably rated for
the hazardous zone area in which it is to be mounted. EEx-d motors
should only be installed by EEx-d qualified personnel.
Any deviation from normal operating conditions (increased
power consumption, temperature, vibrations, noise) or
warning signals by monitoring equipment suggest
malfunction. Inform the responsible maintenance personnel
at once to prevent the trouble from worsening. If in doubt
disconnect the pump immediately.
Page 9 of 25 Watson-Marlow Bredel E-Manuals
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