Atlas Copco SMARTROC D65 TIER 4 FINAL, Maintenance Manual

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SmartROC D65 Tier 4 Final 12 Compressor and air system
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6.
Fill the oil reservoir with the minimum amount of oil permissible and run the com-
pressor unloaded in light mode for 30 minutes.
7.
Drain the system thoroughly when the oil is hot so that as little oil as possible is left in
the system, especially in inaccessible areas. If possible the oil system must also be
pressure washed so that the remaining oil will be blown out.
8.
Fill the system to full level.
9.
Run the compressor unloaded in light mode for 15 minutes and check for leaks.
10.
Check the oil level and fill if necessary.
11.
Collect all surplus lubricant and discard it in accordance with regulations for handling
waste lubricants. See the chapter "Oils and fuel" in the maintenance instructions.
12.3.7 Cleaning the oil cooler
Keep the compressor oil cooler clean using compressed air in order to maintain efficient
cooling.
12.3.8 Test pressurising the safety valve
1.
Disconnect the cables for the flushing air valves Y115 and Y116:
2.
Load the compressor (S180 in the cabin).
3.
Activate high percussion (S446 in the cabin).
4.
Note the current pressure on the pressure gauge 15.
5.
Adjust the regulator for high pressure until the safety valve is triggered. The pressure
must then not have exceeded maximum triggering pressure in accordance with the
table below.
Rig model Maximum triggering pressure
FlexiROC D50 32 bar
FlexiROC D55 35 bar
FlexiROC D60 32 bar
SmartROC and FlexiROC D65 35 bar
6.
Adjust the regulator for high pressure so that the pressure returns to the previous
value.
7.
Reconnect the cables for the flushing air valves Y115 and Y116:
!
NOTE: The regulator must not be adjusted during drilling.
NOTE: Under no circumstances may the set pressure of the safety valve be changed
to a pressure other than that stamped on the valve.