Maintenance; General Information; Lubrication - Wilo MMI50V Instrucciones De Instalación Y Funcionamiento

ENGLISH
9

MAINTENANCE

9.1 GENERAL INFORMATION

Only properly trained and skilled staff should undertake
maintenance operations.
Only authorized personnel should undertake maintenance on
ATEX certified equipments. Make sure to avoid creation of explosion
hazard while proceeding to maintenance in a ATEX zone.
All technical documents delivered with the pump should be known
and should be available near the pump.
The maintenance crew should be informed about the risks linked to the
use of the pump and to the pumped fluids before they can start working
on the equipment (dangerous products, fluid and pump temperature,
pressurized parts, ...). They should be equipped with all appropriated
individual safety protections (glasses, gloves, ...) and should respect local
industrial and security rules.
Pump contains a part of pumped fluid even when it is at a
standstill. Drain and flush pump casing with care before starting pump
disassembly.
Appropriate lifting devices should be available to help personnel moving
heavy loads.
The maintenance area must be clearly identified. Install warning boards
with the words « WARNING : machine under repair ! » on the pump and
on the control cabinet.
Any work on the machine must be performed when pump is
stopped. Prior to any maintenance or repair work the motor should be
electrically isolated and secured against uncontrolled start. Lock the
main switch open and disconnect circuit breaker. Withdraw the fuses if
any.
WARNING : electrical equipments that must be powered on during the
maintenance work or pressurized equipments must be clearly identified.
End of maintenance operations : all protective parts that were removed
before maintenance should be reinstalled and all security devices should
be reactivated. Pump surrounding area should be cleaned.
9.2 MAINTENANCE
INSPECTIONS SCHEDULE
It is recommended to build up a maintenance and inspection plan
to ensure a reliable use of pump and to reduce malfunctions hazards.
Following check points should be included in this maintenance plan :
- Check state and working of securities and auxiliary systems,
- Check and adjust gland packing (if any) for visible leakage,
- Check for any leaks from pump gaskets and flanges seals,
- Check lubricant level and aspect of oil (oil lubricated bearings) in
bearing bracket,
- Check running time and replacement frequency of lubricants / ball
bearings,
- Check the bearing bracket housing surface temperature on ball
bearings area,
- Check dirt and dust is removed from pump and motor ,
16
AND PERIODIC
- Check coupling alignment (depending on pump variant),
- Check if there is unusual noises (cavitations, hissing, purring, ...) or
excessive vibrations.
Check point
State of the auxiliary systems
Motor
Shaft sealing
Leaks from gaskets
Oil level and grease quantities
Lubricants (ball bearings)
Bearings surface temperature
Cleaning
Alignment and coupling wear
Noise, vibrations
Anchoring quality
Those frequencies are given for information only. They could be used as
a basis to the creation of a maintenance plan when starting a new
installation. Depending on installation conditions and use, the
periodicity will be shortened or prolonged.
9.2.1 LUBRICATIO N
NORMA V pumps use a bearing bracket fitted with lifetime lubricated
ball bearings (TH) or grease lubricated ball bearings (TM) integrating a
manually actuated greaser. Variants EM and CS have no ball bearing
inside.
For motor lubrication plan, please refer to the machine specific
instructions.
9.2.1.1 BEARING ASSEMBLY WIT H GREASER
Grease NLGI2*
Temperature range -20 to +100°C
(-4 to 212°F)
Description acc. To KP2K-25
DIN
BP Energrease LS-EP2
Elf Multis EP2
Fuchs RENOLIT EP2
ESSO Beacon EP2
Mobil Mobilux EP2
Q8 Rembrandt EP2
Shell Alvania EP2
Texaco Multifak EP2
SKF LGEP 2
Periodicity
Depends on equipment type.
See dedicated equipment IOM
See manufacturer IOM
Weekly
Weekly
Daily / Weekly / Monthly
Replacement frequency
according ball bearing type and
shaft speed
Monthly
Twice a year
Twice a year
Monthly
Yearly
NLGI3
-20 to +100°C
(-4 to 212°F)
KP3K-20
Energrease LS-EP3
Multis EP3
RENOLIT EP3
Beacon EP3
Mobilux EP3
Rembrandt EP3
Alvania EP3
Multifak EP3
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