Atlas Copco GA 11 VSD MED, Инструкция

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This sensor measures the temperature of the compressed air after the cooler. It gives a warning when the
temperature exceeds 55°C, since this is not optimal for the dryer down the line.
Ammeter
The Ammeter in the cubicle door measures the current and allows to follow up unusual behaviour.
Main switch
The main switch allows to cut the power supply to the cubicle, during maintenance or during problem solving.
Local/LAN switch
A physical switch is mounted on the cubicle to enable easy switching to local control mode during maintenance
or for problem solving. When the switch is in LAN position, this compressor will be under control of the ES-
MED controller.
CAN port
On the side of the cubicle, two CAN connectors are foreseen for easy connecting of CAN cables towards the
ES-MED (the Plant Central Control Unit) or other compressors. When the compressor is last in line, the upper
CAN connector must be chosen and the dip switch on the CAN connector inside the cubicle must be switched
to
ON .
2.9 Air receiver
The compressed air receiver ensures an instantaneous response to the demand for compressed air and prevents
continuous operation of the compressor during periods of light demand. The reservoir is a welded mild steel
construction, designed and tested in accordance with European Standard EN 286-1. Test details are annotated
on a plate permanently fixed to the reservoir and copies of the appropriate test certificates are supplied with
each plant. The reservoir incorporates access covers to facilitate future insurance internal inspection. Both
the interior and exterior are protected against corrosion with a hot dip galvanised finish. A zero loss electronic
drain valve is fitted to the vessel at the lowest point to enable the removal of any internal moisture, which
may form as condensation, there is also a tapping for a pressure gauge. The receiver connects to the
compressors and to the filter/dryer assembly by external pipe work. Although essentially designed as a
freestanding unit, the vessel feet are pre-drilled to enable the plant to be bolted down if required. The receiver
capacity is expressed as the water capacity in litres and HTM02-01/HTM2022 requires a minimum capacity
of 50% of the Average Continuous Demand of the Plant. In practice, to achieve economic manufacture,
specific vessel sizes are used with a range of compressor sizes, which results in some plant installations having
a larger vessel than is theoretically necessary.
Instruction book
18 2920 7104 10