Engineering manual - SAB 193-233-283 S A-frame (including ATEX)
008831 en 2020.10
71/168
Technical description
4.35 Key to piping diagram
Valve positions during operation
Pos. no.
Designation In-operation position
101
Suction stop valve Open
102
Stop valve after oil separator Open
103
Change over valve
Open to safety valve,
no. 1 or no. 2
104/PSV1
Safety relief valve (Closed) Fixed set point
105/PSV1
Safety relief valve (Closed) Fixed set point
106
Service valve for oil drainage
Closed
107
Purge valve
Closed
108 Service valve
“Pump out”/Closed
114
Stop valve, suction check valve by-pass Open
115 Check valve
116 Oil level indicators
117 Oil level indicators
119
Stop valve after oil separator Open
120
Oil temperature regulating valve Fixed set point
121
Service valve, oil filter
Closed
123
Stop valve before oil filter, Oil filter 1 Open when filter is in use
124
Regulating valve (oil flow)
Open (partly)
Adjusted according to manual
126
Cold-start discharge valve Opens automatically
127
Compressor protection valve
(Closed)
Controlled by pilot valve
128
Pilot valve for pos. 127 (Closed) Fixed set point
129 Suction check valve
130
Change over valve
131
Safety valve oil cooler
132
Safety valve oil cooler
133
Safety valve oil cooler
135
Stop valve before oil filter, Oil filter 1 Open when filter is in use
136
Stop valve before oil filter, Oil filter 2 Open when filter is in use
137 Service valve - oil filter
(Closed)
138
Stop valve before oil filter, Oil filter 2 Open when filter is in use
139
Non-return valve (check valve)
140 Check valve
141
Stop valve Open
142 Strainer
143 Check valve
144
Strainer before oil pump
145 Service valve Closed
146
Oil pump overflow valve Closed. Fixed set point
151
Suction gas temperature
152
Discharge gas temperature
153
Lubricating oil temperature
154
Separator oil temperature
155
Oil pressure after filter
156
Oil pressure before filter
157
Discharge pressure
158
Suction pressure
159 Pressure switch control
160 Low level shutdown
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