ImVT 120 II Mini Verticus
Page 16
1st Edition, Rev. 0 Chg. 10
3.1.4.4
Oil Change
1. Run the compressor until it is warm then shut it down.
2. (See Figure 3-5). Remove the cap (1) from the oil filler neck.
3. Drain oil while it is still warm by means of the oil drain tap.
4. (See Figure 3-6). Remove the two bolts (1) with a 13 mm wrench. Remove the oil filter cover (2)
5. (See Figure 3-7). Remove the oil filter (1) from the rubber gasket at the cover.
6. Mount a new filter element (P/N N25326) and replace and fasten oil filter cover.
7. Slowly pour new oil through the oil filler neck until the level reaches the maximum mark on the
sight gauge.
8. Wait a few minutes and adjust the oil level if necessary before putting the unit into operation.
3.1.5
Venting the Oil Pump
Venting of the Oil Pump may be necessary if after maintenance work, oil pressure is low or not built up
after starting the unit, or if the unit should have been running backwards because of a wrong phase
sequence.
1. Open all the condensate drain valves to avoid building up pressure.
2. Start the compressor.
3. See Figure 3-7. Loosen the cap screw and plug (2) and wait until oil pours out free of air bubbles.
4. Tighten the cap screw and plug.
5. Stop compressor, close all condensate drain valves and check oil level.
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CAUTION
Replace the oil filter every oil change. Failure to do so will cause the filter to clog and the bypass valve to
open resulting in unfiltered oil being circulated and possible damage to the compressor.
