4 Maintenance
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4
4.4 Air Service Unit
The unit supplied with Autopack machine is consist of the filter unit with the manual
drain option at the bottom side for removal of moisture, manually adjustable rotary
knob diaphragm based regulator, and a lubricator unit made of metal housing with
transparent lubricator bowl and easy oil top up unit.
The setting values of pressure can be seen on the gauge and there is locking option
for the knob after an adjustment has been made. There are some optional
accessories which can be fitted with the service unit if requested.
4.4-1 Regulator lock (optional)
The regulator lock is a cap which is made of Polyacetal material. It is attached to the
rotary knob to prevent unauthorized persons adjusting the air pressure. It is fixed to
the normal air service unit with Lock plate of galvanized steel mounted on the
pressure regulating valve using the knurled nut.
4.4-2 On Off valve (optional)
This is a 3/2 way manual shut off valve which is coming with a recognizable
switching position. The unit is vented when the valve is switched off.
4.4-3 Air pressure switch (optional)
This switch is operated with 24 V DC supply and can be adjusted to the create the
alarm condition in case the air pressure is dropped or missing.
4.5 Air pressure switch
Purpose: For stopping the System with the alarm due to loss of air pressure in the
supply.
Location: Pressure switch has been installed behind Junction box XB 810 under the
pusher unit with other solenoid valve assembly.
Setting: The alarm setting of air pressure switch is made at 3 bars.
Pressure switch
Adjustment of pressure switch
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