SABROE SAB 193 S, Engineering Manual, Page: 73 / 177

Engineering manual - SAB 193-233-283 S A-frame (including ATEX)
008831 en 2022.02
73/175
Technical description
Legend (Covers all P&I diagrams in this manual)
C Compressor TSH Temperature switch high alarm
CV Check valve TW Thermowell
DP Discharge pressure VI Vi control
FG Flow glass SB-2 Inlet bearing and balance piston
HV Hand valve SB-3 Discharge bearings and seal
HTR Heater SC-1 Slide valve - unload
LG Level glass SC-2 Slide valve - load
LSLL Separator low oil level shutdown SC-3 Moveable slide stop
M Motor
SC-4 Moveable slide stop
1MC
Motor control centre
SC-5 Inlet pressure
2MC
Motor control centre
SC-6 Discharge pressure
NOS No oil switch SC-7 Seal weepage
OF Oil filter SC-8 Oil drain connection
OP Oil pressure SC-9 Inlet housing oil drain
P Demand pump
SC-
13 Oil drain cylinder
PAH High discharge pressure alarm SE-1 Electrical connection
PAHH High discharge pressure shutdown SE-2 Electrical connection
PAL Low pressure alarm SL-1 Liquid injection low Vi
PALL Low pressure shutdown SL-2 Liquid injection high Vi
PDAH High pressure differential alarm SM-1 Main oil injection
PDI
Pressure differential indicator SV-1
Vapour injection tongue and groove
PDSL-
L Compressor low diff. pressure cut-out SD-1 Coalescer bleed str trh O-ring port
TW-1 Thermowell
PE Pressure transducer Pressure transducers indicate:
PI Pressure indicator PE-1 Oil pressure (manifold)
PIC Pressure indicator controller PE-2 Oil pressure before filter
PM Pump motor PE-3 Discharge pressure
PS Pressure switch control PE-4 Suction pressure
PSV High pressure safety valve Temperature probes indicate:
SP Suction pressure TE-1 Suction gas temperature
STR Strainer TE-2 Discharge gas temperature
TAH High temperature alarm TE-3 Lubricating oil temperature
TAHH High temperature shutdown TE-4 Separator oil temperature
TAL Low oil temperature alarm Solenoid valve function:
TALL Low oil temperature shutdown YY-1 Energise unload slide valve
TC Temperature controller YY-2 Energise increase volume rate
TCV Thermal control valve YY-3 Energise increase volume ratio
TE Temperature element YY-4 Energise decrease volume ratio
TI Temperature indicator YY-5 Solenoid valve
TS Temperature switch YY-9 Dual-port liquid injection solenoid
Note: On units delivered without valves, the bracketed figures near the branches on the P&I di-
agram refer to the component numbers in the list in subsection 4.35 Key to piping diagram .
These components must be fitted by the customer.