Ponybench Bpplus Pneumatic Diagram - spanesi PONYBENCH BPPLUS Manual De Instrucciones

7.4 PONYBENCH BPPLUS PNEUMATIC
DIAGRAM
The operating diagram of the PONYBENCH BPPLUS
pneumatic system is composed as follows:
GPO Hydraulic pump unit
CBS Safety lock valve cylinder
VO "Or" valve
S1 Ascent control selector
- Position 0 Neutral
- Position 1 Ascent
S2 Descent control selector
- Position 1 Upper descent section
- Position 0 Neutral
- Position 2 Lower descent section
S3 Lifting arm control selector
- Position 1 Lifting arm closing
- Position 0 Neutral
- Position 2 Lifting arm opening
VRF Flow control valve
FC Limit-switch
S - R Silencers
CA-CB Lifting arm movement cylinders
CD-CE Lifting arm movement cylinders
• OPERATION:
When the selector/valve (S1) is operated, the compressed
air coming from the air supply line is sent to the hydraulic
pump unit (GPO) in order to raise the lift. In order to lower
the lift, the selector/valve (S2) must be rotated counter-
clockwise to connect the compressed air coming from the
limit switch (FC) to the hydraulic pump unit (GPO). The
descent of the lift will stop when the limit-switch (FC) is
triggered, and at this point the selector/valve (S2) must be
rotated clockwise in order to complete the descent.
When the selector/valve (S3) also positioned on the
control console is rotated clockwise, the compressed air
coming from the air supply line passes through a fl ow
control valve (VFR) to reach the plunger chambers of the
jack (CA-CB-CD-CE) and triggers the opening of the buffer
support lifting arms.
On the other hand, if the selector/valve (S3) is rotated
counter-clockwise, the jacks (CA-CB-CD-CE) are fed by
the other inlet, thereby closing the buffer support lifting
arms.
The air pressure regulator/lubricator unit is not supplied by
the manufacturer because it is usually an integral part of
the bodyshop's own compressed air distribution system.
WARNING! Alteration of the relief valve causes
serious damage. SPANESI S.p.A. declines all
responsibility for injury to persons and animals
or damage to property due to alteration of this
valve.
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83
GB