ABAC Start L20 Manual De Instrucciones página 34

until the position of the switch of the pressure switch (5) (or of the
selector of the electric panel) figures 6a-6b-6c-6d) is modified. To use the
G
compressor again, wait at least 10 seconds after this has been switched off
before restarting.
B
• In the versions with electric panel, the pressure switch must always be
aligned with the I (ON) position.
• In tandem versions (type E), the control unit provided permits use of only
one of the two compressor groups (if necessary alternatively) or of both
at the same time according to requirements. In this second case, start-up
will be differentiated slightly to avoid excessively high current take-off at
start-up (timed starting).
• Only the wheel-mounted compressors are fitted with a pressure reducer
(in the versions with fixed feet, it is usually installed on the use line). Air
pressure can be regulated in order to optimize use of air-powered tools
operating on the knob with the valve open (pulling it up and turning it in a
clockwise direction to increase pressure and counterclockwise to reduce
this) (fig. 8). Once you have set the value required, push the knob down to
lock it.
• The value set can be checked on the gauge (for versions equipped with
this, fig. 9).
• Please check that the air consumption and the maximum working
pressure of the pneumatic tool to be used are compatible with the
pressure set on the pressure regulator and with the amount of air
supplied by the compressor.
• When you have finished working, stop the machine, pull out the plug and
empty the reservoir.
3
AIR RECEIVER (ON TANK-MOUNTED UNITS)
• It is necessary to prevent rust formation: depending on the conditions
of use, condensation may accumulate inside the tank (1) and must be
discharged daily. This may be done manually, by opening the drain valve,
or by means of the automatic drain, if fitted to the tank (4). Nevertheless,
a weekly check of correct functioning of the automatic valve is needed.
This has to be done by opening the manual drain valve and check for
condensate (fig. 14a, 14b).
• It is necessary to have the thickness of the air tank walls (1) annually
checked by a competent body, because corrosion inside the tank
may reduce thickness of the steel walls, with the consequential
risk of explosions. If applicable, observe the local standards. It is
not allowed to use the air tank when wall thickness does not reach
the minimum value indicated in the tank certification (part of the
documentation delivered with the unit).
• Lifetime of the air receiver (1) mainly depends on the working environment.
Avoid installing the compressor in a dirty and corrosive environment, as
this can reduce the vessel lifetime dramatically.
• Do not anchor the vessel (1) or attached components directly to the ground
or fixed structures. Fit the pressure vessel with vibration dampers to avoid
possible fatigue failure caused by vibration of the vessel during use.
• Use the vessel (1) within the pressure and temperature limits stated on the
nameplate and the testing report.
• No alterations must be made to this vessel by welding, drilling or other
mechanical methods.
4
MAINTENANCE
• The service life of the machine depends on maintenance quality.
• PRIOR TO ANY OPERATION SET THE PRESSURE SWITCH TO THE
OFF POSITION, PULL OUT THE PLUG AND COMPLETELY DRAIN THE
RESERVOIR.
• Perform service tasks with the machine cold, wearing the personal
protective equipment.
Use the equipment that suits each service task and only use original spare
parts.
5
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.
• Check that all screws, in particular those of the head of the unit (2) are
tightly drawn up (fig. 10). Check head tightening before the first start up
and after the first hour of work.
Screw M6
Screw M8
Screw M10
Screw M12
Screw M14
• To perform the main service tasks on type F compressors, disassemble
the plastic protection (15) (figures 11a-11c). When you are finished with
the service task, reassemble the plastic protection, following the reverse
procedure.
• To perform the main service tasks on type G compressors, disassemble
the plastic protection (15) (fiures 12a-12f), removing the front semi-shell
first and then the rear one. When you are finished with the service task,
reassemble the plastic protection, following the reverse procedure.
• Clean the suction filter (13) according to the type of environment and in any
case at least every 100 hours. If necessary, replace the filter (a clogged
filter impairs efficiency while an inefficient filter causes harsher wear on the
compressor (figures 13a - 13b).
• Change the oil after the first 100 hours of operation and subsequently
every 500 hours. Check the oil level periodically (9).
• Use ALTAIR. Never mix different grade oils. If the oil changes color (whitish
= presence of water; dark = overheated), it is good practice to replace the
oil immediately.
• After topping up (8), tighten the plug (fig. 7c) making sure that there are no
leaks during use. Once a week, check the oil level to assure lubrication in
time (fig. 7a, 7b).
• Periodically, check the tension of the belts which must have a flexion (f) of
around 1 cm (fig. 15).
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
Air tank wall thickness
inspection.
*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 cock (4) open.
Rilsan hose not inserted correctly in pressure
switch.
34
TABLE 1 – TIGHTENING OF HEAD TENSION RODS
Nm
Min. torque
9
22
45
76
121
TABLE 2 – MAINTENANCE
AFTER THE
FIRST 100
HOURS
●
Check head tightening before the first start up and
after the first hour of work
Daily
Periodically
Annually
Unscrew the hex-shaped head of the check
valve, clean the housing and the special rubber
disk (replace if worn). Re-assembler and tighten
carefully (figures 16a-16b).
Close the Condensate drainage cock.
Insert the Rilsan hose correctly inside the
pressure switch (fig. 17).
Nm
Max. torque
11
27
55
93
148
EVERY 100
EVERY 500
HOURS
HOURS
●
●
REMEDY