10
10.1
General maintenance hints
Sulzer submersible mixers are reliable quality products each being subjected to careful final inspection.
Lubricated-for-life ball bearings together with monitoring devices ensure optimum mixer reliability provided that
the mixer has been connected and operated in accordance with the operating instructions.
Should, nevertheless, a malfunction occur, do not improvise but ask your Sulzer customer service department
for assistance.
This applies particularly if the unit is continually switched off by the current overload in the control panel, by the
thermal sensors of the thermo-control system or by the seal monitoring system (DI).
Regular inspection and care is recommended to ensure a long service life.
NOTE
The Sulzer Service Organisation would be pleased to advise you on any applications
you may have and to assist you in solving your pumping problems.
NOTE
The Sulzer warranty conditions are only valid provided that any repair work has been
carried out in Sulzer approved workshop and where original Sulzer spare parts have
been used.
ATTENTION
Repair work on explosion-proof motors may only be carried out in authorized
workshops
by qualified personnel using original parts supplied by the manufacturer.
Otherwise the ex-approvals are no longer valid. Detailed guidelines, instructions and
dimensional drawings for the service and repair of Ex-approved mixers are in the RW
200 and 280 Workshop Manual.
10.2
Oil filling and changing
Waste oil must be disposed of in the proper manner.
10.3
Filling oil into the oil chamber
The mixers have been filled at manufacture with oil. These oils are not injurious to the environment. An oil
change is only necessary if a fault occurs. When carrying out repairs only original spare parts, supplied by the
manufacturer, should be used.
10.4 Cleaning
ATTENTION
Make certain the propeller has completely stopped rotating before approaching the
mixer.
In order to clean the propeller blades of fibrous material it is permissible to run the mixer in the opposite
direction (incorrect direction) for a short period.
c
Changing the direction of rotation on control panels not fitted with a direction of rotation change-
over switch may only be carried out by a qualified person, and for this reason this procedure is not
authorised as a method of cleaning the propeller.
If the mixer is to be taken out of commission then it should be cleaned by hosing it down with clear water. If the
unit is to remain out of service for a prolonged period then it should be stored in a dry and frost-proof location.
If the unit is to be reinstalled after a prolonged period out of use then proceed as per Sections 5 - 9.
