MCH36 Silent Touch
Nuvair
Page 34
www.Nuvair.com
Always wear goggles when handling compressor lubricant. These materials can cause eye irritation. If
you accidentally get lubricant into your eyes, flush with fresh water for 15 minutes and contact a
physician if irritation develops.
Compressor lubricant should be recycled after use at a licensed facility in accordance with Federal,
State, and local regulations.
13.8 Changing the Lubricating Oil and Filter
The lubricating oil must be changed every 250 working hours or annually.
1
Every time the lubricating oil is
changed the oil filter must be changed also.
To change the oil:
•
Position a used oil receptacle with a capacity of at
least 1.2 gal (5 L) under the drain valve (a, Figure
22) so the oil flows into the receptacle. If necessary,
use the supplied oil drainpipe (d, Figure 23),
connecting the pipe fitting to the condensate drain
tap (a, Figure 22).
•
Open the top plug (b, Figure 22).
•
Remove the plug (i, Figure 22), open the tap (a) and
drain all the oil.
•
Unscrew the filter (c, Figure 22) being sure to
recover the oil inside it.
•
Replace the filter (c) with a new one.
•
Wet the gasket (g, Figure 22) of the filter with a little oil and firmly
tighten the filter manually.
•
Close the drain valve (a).
•
Remove the top-up plug (b).
•
Fill the oil sump with 3.5 L (0.92 gal) of oil from top oil plug (see
“7.6.1 Oil table”).
•
Close the oil top plug (b).
•
Switch on the compressor and run it depressurized for 30 seconds.
•
Switch off the compressor and remove the plug from the main power
supply.
•
Check the oil level (h, Figure 22); if the oil level is not within the allowed limits top up or drain off.
1
According to Coltri specifications, a new compressor using synthetic lubricants can operate up to 1000 hours between oil changes.
At Nuvair, we prefer to have oil changed every 250 hours (or once per year, whichever interval is less) unless you are taking
advantage of an oil analysis program that confirms the oil is still good.
Figure 22. Checking and changing lubricating oil.
Figure 23. Oil drain hose.
