Fini MEGA SD 75 - Page 38

38
38
10
9
MIN.
MAX.
B
A
C
E1
E1
E1
E2
E
E1
D
MEGA SD - Cod.197DD8100
GB
REPLACING THE OIL (Fig.9)
When the compressor is hot - above 70 °C, replace the oil.
Alarm signal
• Remove the front panel
• Connect the drain hose provided to cock B located at the base
of the separator tank.
• Unscrew the plug from hole A, open the cock and allow the oil
to drain in to a container until draining is complete.
• Close cock B and withdraw the hose.
• Refill with new oil using hole A (quantity for complete refilling:
22,5 litres) and refit the plug.
To facilitate the filling, unscrew the cap C, then screw it again.
• Start up the compressor and allow to function for 5 minutes,
and then shut it down. Discharge all of the air and wait 5 minutes
before controlling the oil level. Top up, if necessary.
THE EXHAUSTED OIL IS HIGHLY POLLUTANT! For its disposal
comply with the current laws on environmental protection.
• The first equipment oil is: RotEnergy Plus.
In the case of changing the type of oil, operate only for the
complete replacement. NEVER MIX DIFFERENT TYPES OF
OIL.
In this case, change also the oil filter and the separator filter.
MAINTENANCE
CHECKING THE TRANSMISSION BELT TENSION (FIG. 10)
When the compressor is stopped, remove the panel C e the panel D and check the belt tension.
Use a suitable measuring instrument that determines with precision the belt tension degree by means of a frequency measuring
device in order to perform this control.
Operate as follows:
• Place the microphone of the measuring instrument near to the
belt (about half way) and hit the belt with a wrench.
• Read the value detected by the instrument and if different from
thevaluesindicatedinthetable(g.9A),adjustthetension:
Value higher = belt too tight
Value lower = belt too loose
Adjust by loosening the four bolts E1 and adjust the tension
with the bolt E2.
After adjusting, tighten the bolts E1.
Check the frequency value again and if necessary, repeat the
operation.
REPLACING THE TRANSMISSION BELT (Fig. 10)
When the compressor is stopped, remove the panel C e the
panel D. Loosen the four bolts E1 and act on the bolt E2
loosening belt E until completely loose.
Remove the belt and replace it with a new one.
After replacing, check the belt tension as described
previously.
Belt tension
Power frequency (Hz)
50 Hz 60 Hz
Pressure 8 bar 10 bar 13 bar 8 bar 10 bar 13 bar
CV 50 (37 kW) 64 62 63
CV 60 (45 kW) 71 72 70
CV 75 (55 kW) 82 84 87
Tension frequency (Hz)