Product Introduction; Applications; Pumped Liquids; Pump Identification - Grundfos LFE Instrucciones De Instalación Y Funcionamiento

7. Product introduction

This data booklet describes:
• LFE end-suction, frame-mounted pumps with integrated VFD
• LCSE end-suction, close-coupled, split-coupling pumps with
integrated VFD.

7.1 Applications

We recommend the integrated VFD end suction pumps for these
applications:
• commercial and industrial cooling systems
– pumping both primary and secondary cooling water
• condenser water systems
• district cooling systems
• water distribution systems
• irrigation systems.

7.2 Pumped liquids

Clean, thin, non-aggressive liquids, not containing solid particles
or fibers. Do not pump liquids that will attack the pump materials
chemically.

7.3 Pump identification

Pumps are identified by catalog and serial numbers (LFE
nameplate shown in fig. 6). These numbers are stamped on the
pump nameplate as shown in fig. 6, affixed to each pump volute
casing, and should be referred to in all correspondence with
Grundfos.
CAT#: 21-20709-133L01-25E1MS1
STOCK#: 91893522
SER#: 1971001000
GPM: 234 TDH: 88
MFD BY GRUNDFOS CBS INC
Nameplate
Fig. 6
All manuals and user guides at all-guides.com

8. Servicing the product

8.1 Maintaining the product

8.2 Lubricating the product

8.2.1 Lubricating the motor
Always follow the motor manufacturer's lubricating instructions, if
they are available, and periodically check grease fittings and
drain plugs for leaks. Use the standard lubrication interval. See
the installation and operating instructions or the lubrication plate
on the E-motor. If the lubricating instructions are not available,
refer to the table below for recommended lubricating intervals.
IMP
:
5.11
DIA
34014412
WARNING
Moving machine parts
Death or serious personal injury
- Before any inspection, maintenance, service or
repair of the product, make sure the motor controls
are in the "OFF" position, locked and tagged.
Recommended lubricating intervals
Motor rpm Motor hp
Standard
3.00-7.50
1750
and below
10-30
above 1750 all hp
Standard conditions:
Operating 8 hours per day operation, normal or light load, clean
air, 100 °F (37 °C), maximum ambient temperature.
Severe conditions:
Operating continuously 24 hours, shock loads or vibrations,
poor ventilation, 100-150 °F (37-65 °C), ambient temperature.
Extreme conditions:
Continuous operation, heavy shocks or vibrations, dirt or dust in
the air, extremely high ambient temperature.
Operating conditions
Severe Extreme
3 yrs 1 yr 6 mo
1-3 yrs 6 mo-1 yr 3 mo
6 mo 3 mo 3 mo
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