Flowserve LNN Uživatelský manuál stáhnout pdf (Strana 21)

LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14

Page 21 of 56 flowserve.com

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 *

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

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

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.

Centrifugal

pump lubrication

Oil

Splash / force feed / purge and pure **oil mist lubrication

Viscosity cSt @ 40 ºC

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

Oil companies and lubricants

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 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

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