36
WILO SE 04/2014 V05 DIN A4
English
MAINTENANCE AND REPAIR
Any other work and/or alterations to the
construction must only be carried out by Wilo
customer service.
•
When carrying out work in basins and/or tanks,
the respective local protection measures must be
observed in all cases. A second person must be
present for safety reasons.
•
Only lifting equipment that is in a technically
perfect condition and load-carrying equipment
that has been officially approved may be used for
lowering and raising the pump. Make sure that the
pump does not jam during lifting and lowering.
If the pump does jam, no lifting forces greater
than 1.2 times the pump weight must be applied.
The maximum permissible bearing capacity must
never be exceeded!
Make sure that the lifting gear, ropes and the
lifting equipment's safety devices are in perfect
working order. Work may only commence if
the lifting equipment has been checked and
found to be in perfect working order. If it is not
inspected, fatal injuries may result.
• Electrical work on the pump and the system must
be carried out by a qualified electrician. Defective
fuses must be replaced immediately. They must
never be repaired. Only fuses for the specified
electric current and of the specified type may be
used.
•
If flammable solvents and cleaning agents are
used, naked flames and smoking are prohibited.
•
Pumps that circulate fluids that are hazardous to
health or come into contact with such fluids must
be decontaminated. In addition, make sure that
no gases that are hazardous to health form or are
present.
If injuries are caused by fluids or gases that
are hazardous to health, apply the first-aid
measures specified on the notice at the working
premises and notify a doctor immediately.
• Make sure that the necessary tools and materials
are available. Order and cleanliness ensure safe
and smooth work on the pump. After working on
the pump, remove any used cleaning materials
and tools from the pump. Store all materials and
tools in their proper place.
•
Operating materials should be collected in suit
-
able containers and disposed of properly. Always
wear appropriate protective clothing when per-
forming maintenance and repair work. This must
also be disposed of properly.
8.1. Operating materials
8.1.1. Overview of white oil
The sealing chamber is filled with white oil that is
potentially biodegradable.
When changing the oil, we recommend the fol
-
lowing oil types:
•
Aral Autin PL*
•
Shell ONDINA 919
•
Esso MARCOL 52* or 82*
•
BP WHITEMORE WOM 14*
•
Texaco Pharmaceutical 30* or 40*
All oil types marked with “*” are approved for use
with foods in accordance with “USDA-H1”.
Filling quantities
•
TMT 32M113/7.5Ci: 900 ml
8.1.2. Overview of grease
The following lubricating grease can be used in
accordance with DIN 51818/NLGl Class 3:
• Esso Unirex N3
8.2. Maintenance intervals
To ensure reliable operation, various maintenance
tasks must be carried out regularly.
The maintenance intervals must be specified
according to the load on the pump. Regardless of
the specified maintenance intervals, the pump or
installation must be checked if strong vibrations
occur during operation.
When used in sewage lifting units inside
buildings or on areas of land, the maintenance
intervals and work shown in DIN EN 12056‐4
must be adhered to.
8.2.1. Intervals for normal operating conditions
2 years
• Visual inspection of the power supply cable
• Visual inspection of accessories
• Visual inspection of the coating and housing for
wear
•
Functional inspection of all safety and monitoring
devices
• Inspection of the switchgear/relays used
•
Oil change
15000 operating hours or after 10 years at the
latest
• General overhaul
8.2.2. Intervals for harsh operating conditions
Under harsh operating conditions, the specified
maintenance intervals must be shortened accord-
ingly. In this case, contact Wilo customer service.
If using the pump under harsh conditions, we also
recommend signing a maintenance contract.
Harsh operating conditions include:
•
A large proportion of fibrous material or sand in
the fluid
•
Turbulent inlet (e.g. due to air entry, cavitation)
•
Strongly corrosive fluids
•
Strongly gassing fluids
• Unfavourable duty points
•
Operating states subject to water hammers
8.2.3. Recommended maintenance measures to en-
sure smooth operation
We recommend regular inspections of the current
consumption and the operating voltage in all 3
phases. In normal operation, these values remain
constant. Slight fluctuations depend on the char
-
acteristics of the fluid. The current consumption
