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Attention: It is only allowed to turn the handle completely in or out. No in-
between position is allowed.
The oil cooler bypass valve (BV1) starts closing the bypass line and opening the oil supply line from the
main oil cooler (Co) at the lower limit of its temperature range. At the upper limit of its temperature
range, the bypass line is completely closed and all the oil flows through the main oil cooler.
BV1 must have a higher opening temperature (set point) than BV2 in order to prevent the heat from
being dissipated in the compressor oil cooler (Co) before the warm oil is fed to the oil/water heat
exchanger when using the compression heat as source for energy recovery.
Thermostat BV1 starts to open at 60 ˚C (140 ˚F) and is completely open at 75 ˚C (167 ˚F).
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The wheel (V1) of BV2 (bypass valve of the HE) is totally
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Compressor start-up
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