Flowserve NM - Manual (Page 26)

NM USER INSTRUCTIONS ENGLISH 71576289 - 11/09
Page 26 of 48
6.2.1.2 Oil lubricated bearings
Normal oil change intervals are 2 000 to 3 000
operating hours or at least every 6 months. For
pumps on hot service or in severely damp or
corrosive atmosphere, the oil will require changing
more frequently.
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals.
The lubricating oil should be a high quality mineral oil
having foam inhibitors. Synthetic oils may also be
used if checks show that the rubber oil seals will not
be adversely affected.
The bearing temperature may be allowed to rise to
50 ºC (122 ºF).above ambient, but should not exceed
82 ºC (180 ºF). A continuously rising temperature, or
an abrupt rise, indicate a fault.
Oil Splash lubrication
Viscosity
cSt 40 ºC
32 68 46
Temp. maximum
ºC (ºF)
-5 to 65 (-23 to 149) -5 to 80 (-23 to 176) -
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Designation
according to
DIN51502 ISO VG
HL/HLP 32 HL/HLP 68 HL/HLP 46
BP
BP Energol HL32
BP Energol HLP32
BP Energol HL68
BP Energol HLP68
BP Energol HL46
BP Energol HLP46
DEA
Anstron HL32
Anstron HLP32
Anstron HL68
Anstron HLP68
Anstron HL46
Anstron HLP46
Elf
OLNA 32
HYDRELEF 32
TURBELF 32
ELFOLNA DS32
TURBELF SA68
ELFOLNA DS68
TURBELF SA46
ELFOLNA DS46
Esso
TERESSO 32
NUTO H32
TERESSO 68
NUTO H68
TERESSO 46
NUTO H46
Mobil
Mobil DTE oil light
Mobil DTE13M
Mobil DTE24
Mobil DTE oil heavy medium
Mobil DTE26
Mobil DTE oil medium
Mobil DTE15M
Mobil DTE25
Q8
Q8 Verdi 32
Q8 Haydn 32
Q8 Verdi 68
Q8 Haydn 68
Q8 Verdi 46
Q8 Haydn 46
Shell
Shell Tellus 32
Shell Tellus 37 Shell Tellus 01 C 68
Shell Tellus 01 68
Shell Tellus 01 C 46
Shell Tellus 01 46
Texaco
Rando Oil HD 32
Rando Oil HD-AZ-32
Rando Oil 68
Rando Oil HD C-68
Rando Oil 46
Rando Oil HD B-46
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Wintershall
(BASF Group)
Wiolan HN32
Wiolan HS32 Wiolan HN68
Wiolan HS68 Wiolan HN46
Wiolan HS46
Oil volume (in liter)
Pump type Drive end
bearingt
Non-drive end
bearing
202 NM 3.8 3.8
252 NM 3.8 3.8
6.2.2 Routine inspection (daily/weekly)
The following checks should be made
and the appropriate action taken to remedy any
deviations:
a) Check operating behavior. Ensure noise,
vibration and bearing temperatures are normal.
b) Check that there are no abnormal fluid or
lubricant leaks (static and dynamic seals) and
that any sealant systems (if fitted) are full and
operating normally.
c) Pump fitted with a stuffing box: leakage of 20
drops per minute.
d) Pump fitted with a mechanical seal: no leakage.
e) Check the level and condition of oil lubricant. On
grease lubricated pumps, check running hours
since last recharge of grease or complete
grease change.
6.2.3 Periodic inspection (six monthly)
a) Check foundation bolts for
security of attachment and corrosion.
b) Check pump-running records for hourly usage to
determine if bearing lubricant requires changing.
c) The coupling should be checked for correct
alignment and worn driving elements.