Engineering manual - SAB 193-233-283 S A-frame (including ATEX)
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008831 en 2020.10
Pump direction
All our KRACHT pumps run clockwise (seen on shaft end). Rotating counterclockwise will damage
the shaft seal.
Before the initial start-up of the oil pump, remember to check that it has the correct rotation di-
rection. Do this by looking through the fan shield mounted at the end of the motor, away from the
oil pump.
Fig. 42
Standard lubrication system limits, high-stage
The standard system for compressor operation without a lubricating oil pump may be used on
high-stage applications shown in the clear area of Fig. 43. The optional
demand oil pump
is re-
quired only on low differential pressure applications shown in the shaded area in Fig. 43. Where
the condensing temperatures fluctuate into the shaded area only occasionally during the winter,
the demand pump avoids unnecessary consumption of pump horsepower.
Fig. 43: Standard lubrication system limits, high-stage
Start-up
The pump must only run without an oil flow for brief periods of time because of the bearings and
shaft seal.
Service
The oil pump is designed as one unit and should therefore not be disassembled.
4.33
Economiser, high-stage (optional)
The economiser option provides an increase in system capacity and efficiency by subcooling liquid
from the condenser through a heat exchanger or flash tank before it goes to the evaporator. The
Suction side
Pressure side
Pump running clockwise
°F
-40
-34.4 -28.9 -23.3 -17.8 -12.2
-6.7
-1.1
4.4
°C
°F
4.4
10
15.6
21.1
26.7
32.2
37.8
°C
Pressure differential is acceptable for
standard system operation in the
clear area. A demand oil pump
option is required for operation in
the shaded area.
Saturated suction temperature
C
ondensing t
emper
a
tur
e
Summary of Contents for Sabroe SAB 193 L
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