Alfa Laval LKH, Instruction Manual

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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
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: 4000 rpm
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 seal
Seal types External single, flushed or double mechanical seal
Max. temperature flush media
70
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
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.
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