Flowserve LNN - Manual (Page 21)

LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14
Page 21 of 56
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5.2 Pump lubricants
5.2.1
Recommended oil lubricants
* Note that it normally takes 2 hours for bearing temperature to stabilize and the final temperature will depend on the ambient, r/min, pumpage
temperature and pump size. Also some oils have a very low pour point and good viscosity index which extend the minimum temperature
capability of the oil. Always check the grade capability where the ambient is less than -5 ºC (23 ºF).
** If preheated pure oil mist lubrication, LCS LSO 68 or LSO 100 synthetic oils are permitted.
†
Use LSC for oil mist. Oil parameters provide flash point >166 ºC (331 ºF), density >0.87@15 ºC (59 ºF), pour point of -10 ºC (14 ºF) or lower.
*** ExxonMobil SHC 524 synthetic oil has a pour point temperature of - 54 ºC. This oil can be used for ambient temperature as low as -50 ºC.
5.2.2
Recommended grease lubricants
Grease
grade
NLGI 3 ** NLGI 2 * NLGI 2 *
Temperature
range
-20 to 100 ºC
(-4 to 212 ºF) -20 to 100 ºC
(-4 to 212 ºF) -20 to 130 ºC
(-4 to 266 ºF)
Designation
acc. to DIN
KP3K-20 KP2K-25 KP2N-20
BP
Energrease
LS-EP3
Energrease
LS-EP2
Elf Multis EP3 Multis EP2
Fuchs
RENOLIT
EP3
RENOLIT
EP2
Esso Beacon EP3 Beacon EP2
Mobil Mobilux EP3 Mobilux EP2
Q8
Rembrandt
EP3
Rembrandt
EP2
Shell Alvania EP3 Alvania EP2
Texaco Multifak EP3 Multifak EP2
SKF LGEP 2 LGHB 2 ***
* NLGI 2 is an alternative grease and must not be mixed with other
grades.
** Standard pre-packed grease for fitted antifriction bearings. NLGI 3
greases are preferred for pumps with vertically mounted shaft.
*** Grease to be used on special high temperature applications in
conjunction with a specially selected bearing type and arrangement.
5.2.3 Lubrication schedule
5.2.3.1
Oil lubricated bearings
Normal oil change intervals are 4 000 operating hours
or at least every 6 months. Where Mobil SHC oils are
used this will increase up to 12 000 operating hours
where oil is kept below 60 ºC (140 ºF).
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 outer ring temperature may be allowed to
rise to 50 ºC (90 ºF).above ambient, but should not
exceed 93 ºC (200 ºF). If the oil temperature is
monitored then it shall not exceed 82 °C (180 °F).
A continuously rising temperature or an abrupt rise in
temperature will indicate a fault.
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Oil Splash / force feed / purge and pure **oil mist lubrication
Viscosity cSt @ 40 ºC 32 46 68
Oil temperature range *
-5 to 65 ºC
(23 to 149 ºF)
-5 to 78 ºC
(23 to 172 ºF)
-5 to 80 ºC
(23 to 176 ºF)
Designation to ISO 3448
and DIN51524 part 2 ISO VG 32
32 HLP
ISO VG 46
46 HLP
ISO VG 68
68 HLP
Oi
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BP Castrol
†
Energol HLP-HM 32 Energol HLP-HM 46 Energol HLP-HM 68
ESSO
†
NUTO HP 32 NUTO HP 46 NUTO HP 68
ELF/Total
† ELFOLNA DS 32
Azolla ZS 32
ELFOLNA DS 46
Azolla ZS 46
ELFOLNA DS 68
Azolla ZS 68
LSC
(for oil mist only
– long life) †
LSO 32
(synthetic oil)
LSO 46
(synthetic oil)
LSO 68
(synthetic oil)
ExxonMobil (mineral oil)
†
Mobil DTE 24 Mobil DTE 25 Mobil DTE 26
ExxonMobil
(oil bath only
– long life) †
Mobil SHC524
(synthetic oil) ***
Mobil SHC525
(synthetic oil)
Mobil SHC526
(synthetic oil)
Q8
†
Q8 Haydn 32 Q8 Haydn 46 Q8 Haydn 68
Shell
†
Shell Tellus 32 Shell Tellus 46 Shell Tellus 68
Chevron Texaco
†
Rando HD 32 Rando HD 46 Rando HD 68
Wintershall (BASF Group)
†
Wiolan HS32 Wiolan HS46 Wiolan HS68
Fuchs
†
Renolin CL 32 Renolin CL 46 Renolin CL 68