Wilo Norma V Series, Installation And Operating Instructions Manual

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ENGLISH
18
- Check coupling alignment (depending on pump variant),
- Check if there is unusual noises (cavitations, hissing, purring, …) or
excessive vibrations.
Check point Periodicity
State of the auxiliary systems Depends on equipment type.
See dedicated equipment IOM
Motor See manufacturer IOM
Shaft sealing Weekly
Leaks from gaskets Weekly
Oil level and grease quantities Daily / Weekly / Monthly
Lubricants (ball bearings) Replacement frequency
according ball bearing type and
shaft speed
Bearings surface temperature Monthly
Cleaning Twice a year
Alignment and coupling wear Twice a year
Noise, vibrations Monthly
Anchoring quality Yearly
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 LUBRICATION
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* NLGI3
Temperature range -20 to +100°C
(-4 to 212°F) -20 to +100°C
(-4 to 212°F)
Description acc. To
DIN KP2K-25 KP3K-20
BP Energrease LS-EP2 Energrease LS-EP3
Elf Multis EP2 Multis EP3
Fuchs RENOLIT EP2 RENOLIT EP3
ESSO Beacon EP2 Beacon EP3
Mobil Mobilux EP2 Mobilux EP3
Q8 Rembrandt EP2 Rembrandt EP3
Shell Alvania EP2 Alvania EP3
Texaco Multifak EP2 Multifak EP3
SKF LGEP 2 -
(*) NLGI 2 is a replacement grease and should not be mixed with other
quality of grease.
Grease quantity : 20 cm
3
.
9.2.1.2 LUBRICATION PLAN
First filling is performed in our plant during pump assembly.
Manual greaser must be tightened (1/4 turn) every 1000 hours or every
2 months.
Grease change
intervals
Light duty
conditions
n<1500 RPM
Standard or heavy
duty conditions
1500<n<3000 RPM
Every
3500 hours Every
2500 hours
Or after 12 months
After 10000 operating hours or after 2 years, bearings should be
dismantled, cleaned and filled again with grease. For unfavorable
operating conditions (severely damp, dusty atmosphere or hot service)
greasing intervals may be shortened.
For grease replacement or re-lubrication, high quality lithium soap
grease should be used (eg. Mobilux 2, Esso Unirex N3, …).
9.3 DISMANTING AND RE-ASSEMBLY
9.3.1 DISMANTLING OF MOTOR
Make sure to operate in a safe area.
9.3.1.1 MOTOR ASSEMBLY TYPE CS AND EM
For those two motor assembly types it will be necessary to dismantle the
lineshaft before motor can be removed.
9.3.1.2 MOTOR ASSEMBLY TYPE TM AND TH
Make sure that electric power is disconnected (main power supply
and space-heater power supply). Only trained and qualified maintenance
operators are allowed to open motor junction box.
- Open motor junction box and disconnect power cables. Disconnect
space heaters electric cable. Refer to motor instructions and
operating manual if necessary.
- Identify cable connectors with corresponding phases and terminal
connectors in motor junction box. Secure and protect cables ends.
- Disconnect sensors cables.
Select lifting devices according to the weight of goods to handle.
Motor weight is engraved on its nameplate.
- Use slings and hooks to handle the motor. Use the lifting eyes or
lifting lugs available on motor frame to lift the motor.
- Remove motor fastening srews/bolts [6577C].