20/06/2011 PM 9845 0512 02 Page 24 of 36
8. Maintenance
8.1. Compressor oil
Always use RXD oil if the Energy Recovery Unit is installed, DO NOT USE RIF.
Before installation
1. Drain the compressor according to the instructions in the section “Oil and filter change” of the instruction manual of the
main compressor.
Oil filling instructions
1. Check if the lever (Figure 14-26) on the bypass valve housing (Figure 14-7) is turned out fully counter clockwise
(Energy Recovery Unit is turned off). Check if venting nipple of the Energy Recovery Unit is closed.
2. Top up the compressor oil level according to the instructions in the section “Oil and filter change” of the instruction
manual of the main compressor.
3. When the compressor oil level has been topped up, turn in the lever (Figure 14-26) on the bypass valve housing
(Figure 14-7) fully clockwise (Energy Recovery Unit is turned on). Check if the drain valve of the Energy Recovery Unit
is closed.
4. Repeat the instructions in the section “Oil and filter change” of the instruction manual of the main compressor.
Do not run the compressor on warm too long. Installation of Energy recovery Unit increases the minimum oil volume.
Running on warm for long time will damage your compressor.
When using Food Grade oil, decrease the oil exchange interval to 3000 working hours.
Oil drain instructions
1. Tools:
• Set of spanners
• Recipient, large enough to drain complete ER unit (refer to table with volumes below).
2. Check if the lever (Figure 14-26) on the bypass valve housing (Figure 14-7) is turned in fully clockwise (Energy
Recovery Unit is turned on). Check if the drain valve and the venting nipple on the oil inlet of the Energy Recovery Unit
are closed before draining the compressor.
3. Drain the compressor according to the instructions in the section “Oil and filter change” of the instruction manual of the
main compressor.
4. Remove the roof and door panels of the Energy Recovery Unit.
5. Remove the cap from drain flexible before opening the drain valve.
6. Open the venting nipple (Figure 1-10).
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