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Instruction book
3.1.4 Moving/lifting
The compressor can be moved by a lift truck using the slots in
the frame. Make sure that the forks protrude from the other
side of the frame. The compressor can also be lifted after
inserting beams in the slots. Make sure that the beams cannot
slide and that they protrude from the frame equally. The chains
must be held parallel to the bodywork by chain spreaders in
order not to damage the compressor. The lifting equipment
must be placed in such a way that the compressor will be lifted
perpendicularly. Lift smoothly and avoid twisting.
3.1.5 External compressor status indication
The electronic regulator is provided with auxiliary contacts
(K05, K06, K07 and K08-Fig. 1.8) at the back of electronic
module (E1-Fig. 1.7) for external indication of:
- low or high air pressure (K05), 15-13 closed means high
air pressure
- manual load/unload or automatic operation (K06)
- warning condition (K07)
- shut-down condition (K08)
Maximum load for these contacts: 1 A / 250 V AC. Stop the
compressor and switch off the voltage before connecting
external equipment. Consult Atlas Copco.
3.1.6 Compressor control modes
The electronic regulator has two switches (CMS1/2-Fig. 1.7)
to select following compressor control modes (0 = open / 1 =
closed):
CMS1 CMS2 Compressor mode
0 0 The compressor is switched off.
1 0 The compressor is in local control mode
(remote control is made inactive): the
compressor will react to commands entered
by the buttons on the control panel.
Compressor start/stop commands via function
Timer (see section 1.3.1) are active, if
programmed.
0 1 The compressor is in remote control mode
(local control is made inactive): the
compressor will react to commands from
external switches. Emergency stop (S3)
remains active. Compressor start/stop
commands via function Timer (see section
1.3.1) are still possible.
For remote starting and stopping: Connect
a remote start button (normally open contact)
between terminals 30 and 31 and connect a
CMS1 CMS2 Compressor mode
remote stop button (normally closed contact)
between terminals 30 and 32 of terminal strip
(1X1-Fig. 1.7).
Bridge terminals 30 and 34: In this mode, the
outlet pressure is still sensed by pressure
transducer (PT20-Fig. 1.6), resulting in
loading and unloading of the compressor at
the pressures programmed in the electronic
regulator. If terminals 30 and 34 are not
bridged, the compressor is switched out of
automatic load/unload operation and remains
running unloaded.
For remote loading/unloading (via
external pressure switch): Bridge terminals
30 and 35 and connect a load/unload switch
between terminals 30 and 34. This results in
loading and unloading of the compressor at
the closing and opening pressures of the
external pressure switch respectively.
1 1 Compressor is computer-controlled via
communication module (E4-Fig. 1.8). 10)
Consult Atlas Copco.
Attention
Have the modifications checked by Atlas Copco. Stop the
compressor and switch off the voltage before connecting
external equipment. Only voltage-free contacts are allowed.
Start-up
1. Following transport fixations, painted red, must be removed
(Figs. 3.2 and 3.3):
- bushes (2) from both gear casing supports
- bushes (5) from both air receiver supports
- support (3)
2. Check that the electrical connections correspond to the local
codes. Check the connections for correct tightness. The
installation must be earthed and protected against short
circuits by fuses of the inert type in all phases. An isolating
switch must be installed near the compressor.
3. Check transformer (T1-Fig. 1.7) for correct connection, the
settings of drive motor overload relay (F21) and fan motor
circuit breaker (Q15) 2), and that overload relay (F21) is
set for automatic resetting.
4. Fit the air outlet valve (AV-Fig. 1.1). Close the valve.
Connect the air net to the valve.
5. Connect the manual condensate drain valve (Dma-Fig. 1.5).
Close the valve. Connect the valve to a drain collector.
See also Fig. 2.3, reference 5.
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