Atlas Copco ER S-1, Инструкция, Страница: 25 / 40

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7.3. Energy recovery system is turned off
In this case, turn out the lever (Figure 14-26) of the 1st bypass valve (Figure 14-7) of the ER unit fully counter clockwise.
Always turn the lever (Figure 14-26) all the way in or out. Do not position it anywhere in between both ends!
Except for the opening temperature of the 2nd bypass valve (Figure 2-14) of the oil filter pipe (Figures 3/4/5-13), the oil
system is the same as without an energy recovery unit installed.
No energy is recovered.
This situation should be exceptional, e.g. in case of maintenance of the water circuit of the energy recovery unit or if no
energy is required for a longer period.
7.4. Commissioning the energy recovery system
For fixed speed compressors
Run the unit unloaded for a few minutes before switching on/off the energy recovery unit by turning the lever fully in/out
(Figure 14-26).
For VSD compressors
Close the air outlet valve and run the unit at minimum speed for a few minutes before switching on/off the energy recovery
unit by turning the lever fully in/out (Figure 14-26).
7.5. Stopping the ER unit for a longer period
In case of an open water system, and if freezing temperatures are expected, isolate the water system of the ER unit and
blow it through with compressed air.