Position of bypass ball valves
ER label
Attention: It is NOT allowed to use the ball valves at an in-between position!
Energy recovery system in use (see drawing)
Bypass valves in position (A): the heat exchanger (HE) is integrated in the water side of the ER.
• Compressor start-up
When the compressor is started up from cold, the oil temperature will be low. Bypass valve (BV1)
shuts off the oil supply to the oil cooling system to prevent the compressor oil from being cooled.
The oil flows from the oil separator vessel (AR) through the oil filter(s) (OF) back to compressor
element (E).
All energy input is used to rapidly warm up the compressor oil. No energy is recovered.
• Maximum energy recovery
Instruction book
2920 7118 31 85
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