Aerotec B28-50 Manuel Utilisateur page 20

different qualities.
Tighten the plugs (vent/load) following top-up, making sure that there are
G
no leaks during operation of the machine.
Make a weekly check on the oil level to guarantee correct lubrication in time
B
(figure 12 and 15)
In the case of changes in color (whitish = presence of water; dark =
overheated), immediate replacement of the oil is recommended.
-Each day (or at the end of the work if this lasts more than an hour) drain
the condensate that forms inside the reservoir due to the humidity in the
air (figures 24-25) using the respective tap. This helps to prevent corrosion
of the reservoir and does not restrict its capacity.
-Check belt tightness periodically, these must have a deflection (f) of
around 1 cm (fig. 26). In the case of the 7,5 - 10 HP models, access to
the screw for tightening the belt is facilitated by a hole in the internal panel
(fig. 27).
-For all other maintenance operations (replacement of belts, valve plates,
gaskets, etc.), contact the Assistance Centers.
6
POSSIBLE FAULTS AnD RELATED PERMITTED REMEDIES
request the assistance of a qualified electrician for operations
on electric components (cables, motor, pressure switch, electric
panel, etc).
Fault
Air leak from the valve of the pressure
switch.
reduction of efficiency, frequent start-up.
low pressure values.
irregular overheating of the motor and/or
compressor.
After an attempt to start the compressor,
it stops due to tripping of the thermal
cutout caused by forcing of the motor.
during operation, the compressor stops
for no apparent reason.
FUnCTIOn
Cleaning of intake filter and/
or substitution of filtering
element
Change of oil*
Tightening of head tension
rods
Draining tank condensate
Checking the tension of
the belts
* Spent oil and condensate muST Be diSPoSed oF in compliance with
protection of the environment and current legislation.
the compressor must be disposed in conformity with the methods
provided for by local regulations
cause
Check valve does not perform its function
correctly due to wear or dirt on the seal
Condensate drainage tap open
Rilsan hose not inserted correctly in pressure
switch
Excessively high consumption
Leaks from joints and/or pipes
Clogging of the suction filter
Slipping of the belt
Insufficient ventilation
Closing of air ducts
Insufficient lubrication
Start-up with head of the compressor charged
following a blackout (can happen only on models
without electrovalve)
Inefficient electrovalve
Voltage too low
Incorrect or insufficient lubrication
Low temperature
Tripping of the thermal cutout of the motor
Electrical fault
18
TABLE 2 – MAInTEnAnCE
AFTER THE
EVERy 100
FIRST 100
HOURS
HOURS
●
●
The check must be carried out prior to the first
compressor starting.
Periodically and at the end of work
Periodically
remedy
Clean the pad inside the check valve or replace
it if worn. To access the pad, unscrew the
hex-shaped head of the check valve, clean the
housing. Re-assemble and tighten carefully
(figures 28-29)
Close the condensate drainage tap
Insert the Rilsan hose correctly inside the
pressure switch (fig. 30)
Reduce demand
Rework seals
Clean/replace the suction filter
(figures 22-23)
Check belt tension (fig. 26)
Improve ambient conditions
Check and if necessary clean the air filter
Top up or change oil
Return the pressure switch to OFF and then
back to ON
Call the Service Center
Check that the mains voltage matches that of
the dataplate. Eliminate any extensions.
Check level, top up and if necessary change
the oil
Improve ambient conditions
Check level oil.
Check belt tension.
If the fault persists, call the Service Center.
Reset the thermal cutout and restart (see
chapter on tripping of the thermal cutout)
Call the Service Center
EVERy 300
HOURS
●