Grundfos LFE Instrucciones De Instalación Y Funcionamiento página 12

8.2.2 Lubricating the pump
Grease lubrication
In the standard configuration, LFE pumps with horizontal bearing
frames have sealed-for-life bearings (requiring no lubrication).
For customized pumps with regreasable bearings, use an
approved grease and proceed as described below.
Approved grease lubricants
Manufacturer
Shell
Exxon
Chevron
Philips
Texaco
• Remove the drain plug, if any, and the filler plug. Add clean
lubricant until grease appears at the drain hole or along the
pump shaft. On pumps with drain hole, all old grease can be
purged. In such cases, the drain hole must be left unplugged
for several minutes during pump operation to allow excess
grease to be forced out.
• Lubricate the pump bearings at 1-3 month intervals,
depending on the severity of the environment. Pumps in a
clean, dry, moderate temperature (100 °F (37 °C) maximum)
environment must be regreased at 3-month intervals.
Do not over-grease! Too much grease can cause
overheating and premature bearing failure.
Oil lubrication
LFE pumps with oil lubricated bearings are fitted with a
transparent reservoir, a constant-level oiler, that maintains the oil
level about the centerline of the bearing. See fig. 7.
• Follow a regular maintenance program. When necessary,
renew the oil supply in the reservoir of the constant-level oiler.
• Change the oil after the first 200 hours of operation. To change
the oil, remove the drain plug at the bottom of the bearing
cover and the filler plug, that also acts as a vent plug, at the
top of the bearing frame. After draining the oil, replace the
fittings and refill the reservoir with an acceptable oil from the
table
List of acceptable oil lubricants
oil change, the oil must be changed again at 2000 hours and
then at intervals of 8000 hours or once a year, thereafter.
12
All manuals and user guides at all-guides.com
Lubricant
Dolium R
Polyrex
SRI GreaseNLGI 2
Black Pearl - NLGI 2
Polytac
Polystar RB
on page 12. After the first
Oil lubrication
Fig. 7
List of acceptable oil lubricants
Lubricant manufacturer
Aral Refining Co.
British Petroleum Co.
Calypsol Oil Co.
Standard Oil Co.
Esso Corp
Fina Oil Co.
Gulf Refining Co.
Socony Mobil Oil Co.
Shell Oil Co.
Sundco Oil Co.
The Texas Co.
Oil level
Bearing oil brand name
Aral Oil CMU
Aral Oil TU 518
BP Energol
TH 100-HB
Calypsol Bison Oil
SR 25 or SR 36
Chevron
Hydraulic Oil 11
Circulating oil 45
Esso-Mar 25
Teresso 47
Esstic 50
Fina hydran 34
Fina Cirkan 32
Gulf Harmony 47
Gulf Paramount 45
Vac hlp 25
Mobulix D.T.E. 25
Shell Tellus oil 29
Sunvis 821
Texaco ursa oil P 20
Dea viscobil sera 4