Instruction book
1904 0504 83
ϴϱ
l n t r m n n ~ m s n m t r p ³ s o s m m s n q s m p s
>
R
> ? >
9
@ >
[
>
B ; P 9 8 : ; < 9
>
R
> ? >
9
@ >
[
>
B ; P 9 8 : ; < 9
BV2
Thermostatic bypass valve of
ER
unit
OF Oil filter
HE
Oil/water heat exchanger (ER
unit) AR Oil separator vessel
E Compressor element BV1
Thermostatic bypass valve in
oil
filter housing
Co Oil cooler (compressor) Ca Aftercooler (compressor)
1 Water inlet 2 Water outlet
BV2 starts closing the bypass line over the heat exchanger (HE) 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 ER heat exchanger.
On compressors versions with a maximum pressure lower than 13 bar (175 psi), BV2 starts opening at
40 ˚C (104 ˚F) and is completely open at 55 ˚C (131 ˚F).
On compressors with a maximal pressure of 13 bar (175 psi), BV2 starts opening at 60 ˚C (140 ˚F)
and is completely open at 75 ˚C (167 ˚F).
The housing of BV2 is provided with a special wheel (V1), allowing to control the energy recovery
system.
As can be seen on the ER label, the ER unit is integrated in the oil circuit and will recover energy
when the wheel is completely turned in clockwise.
When the wheel is turned out anticlockwise, the heat exchanger (HE) is bypassed and no energy
will be recovered.
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