Alfa Laval LKH Series, Инструкция по эксплуатации

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6 Technical data
It is important to observe the technical data during installation, operation and maintenance.
Inform personnel about the technical data.
6.1 Technical data
The LKH pump is a highly efficient and econominal centrifugal pump, which meets the requirements of sanitary and gentle
product treatment and chemical resistsnce. LKH is available in the following sizes LKH-5, -10, -15, -20, -25, -35, -40, -50,
-60, -70, -75, -85 and -90. The instruction manual is part of the delivery. Read the instructions carefully. The large pump
sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
Data Data Data
Max. inlet pressure *
LKH-5 : 600 kPa
(6 bar) (87 psi )
LKH-10 to -70 (50 Hz):
1000 kPa
(10 bar) (145 psi )
LKH-85 and LKH-90 (50 Hz): 500 kPa (5 bar) (72.5 psi)
LKH-10 to -60 (60 Hz):
1000 kPa
(10 bar) (145 psi )
LKH-70, LKH-75, LKH-85, LKH-90 (60 Hz): 500 kPa (5 bar) (72.5 psi )
Temperature range -10
o
C to +140
o
C (EPDM) (14 to 284
o
F )
Max. speed: 2 poles: 0,75 - 45 kW 900 - 4000 rpm
2 poles: 55 - 110 kW 900 - 3600 rpm
4 poles: 0,75 - 75 kW 900 - 2200 rpm
Maximum product viscosity: 800 cP
Materials Materials
Materials
Product wetted steel parts AISI 316L
Other steel parts
Stainless steel
Product wetted seals
EPDM (standard)
Other O-rings EPDM (standard)
Alternative seals
Nitrile (NBR), fluorinated rubber (FPM) and FEP
Shaft Shaft
Shaft seal
seal
seal
Seal types External single, flushed or double mechanical seal
Max. temperature flush media
70
o
C NOTE: NOTE: NOTE: When the pump is not in operation the flush housing can be
sterialilzed up to 125
o
C
Max. water pressure (flushed seal) Normally atmospheric (max. 1 bar) (max. 14.5 psi)
Water consumption (flushed seal) 0.25 - 0.5 l/min. (0.07-0.13 gl)
Max. water pressure LKH-5 to -60 (DMS) Normally atmospheric (max. 5 bar) (max. 72.5 psi)
Max. water pressure LKH-70 to -90 (DMS) Normally atmospheric (max. 3 bar) (max. 43.5 psi)
Water consumption (double mechanical seal) 0.25-0.5 l/min. (0.07-0.13 gl )
Material, stationary seal ring
Acid-resistant steel with sealing surface of silicon carbide
Material, rotating seal ring Carbon (standard) or silicon carbide
Material, O-rings EPDM (standard)
Alternative material, O-rings Nitrile (NBR), fluorinated rubber (FPM) and FEP
Motor Motor Motor
Foot-flanged motor according to IEC metric standard, 2 poles = 3000/3600 rpm. at 50/60 Hz IP55, insulation class F
Motor sizes (kW), 50 Hz
0.75 - 110 kW
Motor sizes (kW), 60 Hz
0.9 - 110 kW
Motor sizes (Hp), 60 Hz 1.5 - 150 Hp
For further information, see PD sheet.
* Max 5 bar (72psi) inlet pressure allowed if the pump is mounted on an explosion proof motor Exd or Exde, type WEG W21.
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