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Damaged components should always be replaced with original parts. Adjustment of the safety valves shall only be carried out by authorised personnel.

PERSONAL SAFETY

The installation, operation and maintenance of the compressor must be carried out by trained personnel who are familiar with the contents of this instruction book.

The compressor must only be used to compress air.

Unauthorised remodelling or modification of the compressor may result in a safety hazard, and are not permitted.

Before any form of work is commenced on the compressor the electrical power must be turned off at the starter panel and at the main switchboard, and the switch on the main switchboard must be marked with a notice indicating that repair work is in progress. The discharge valve of the compressor must be closed, and the pressure must be released in all pressurised parts of the compressor.

The safety valves for LP and HP air, the bursting disc in the water mantle and any other safety equipment must be inspected regularly. Damaged components should be replaced with new, original parts. Adjustment of the safety valves shall only be carried out by authorised personnel. The compressor must never be used if the safety equipment is defective.

ABOUT THE COMPRESSOR

Construction

The compressor described in this instruction book is constructed as a two cylinder, two stage single action water cooled compressor. The principles of its construction are illustrated in Figures 2.1 and 2.2.

Fig. 2.1 Construction principles

The compressorís first stage is often referred to as the low pressure (LP) stage, and the second stage is called the high pressure (HP) stage. The circulation of air through the compressor is shown in Figure 2.2.

Fig. 2.2 Air circulation

Explanation of symbols:

AIntake filter

BLP suction valve

CLP delivery valve

DLP safety valve

ELP cooler (intercooler)

FHP suction valve

GHP delivery valve

HHP cooler (aftercooler)

IHP safety valve

All bearings in the compressor are pressure lubricated by means of a gear pump connected directly to the end of the crankshaft.

Two replaceable pipe coolers are mounted in the compressorís cylinder block, one of which cools the compressed air after first-stage compression, while the other cools it after second-stage compression.

The intake and discharge of the cooling water is arranged so that it circulates through the cylinder block and ensures effective cooling of the air and the compressorís cylinder walls.

The compressor increases the pressure of air from atmospheric pressure to a specified pressure, up to a maximum of 35 bar.

The compressor is normally fitted with an electric motor or other source of motive power on a well-braced baseplate, with a flexible coupling between the compressor and the motor.

All compressors are test run before delivery from the factory, and all installations with motors will have been correctly aligned.

This compressor, which is used to produce pressurised air for compressed air tools and instruments as well as starting air, satisfies the requirements of the certification companies.



Safety equipment

The compressor is fitted with safety valves after first-stage compression and second-stage compression.

These safety valves are pre-adjusted upon delivery of the compressor to suit the working pressure specified by the customer, ensuring that the pressure does not exceed the limit for which the compressor and compressed air system are dimensioned.

A bursting disc is mounted on the cylinder block cooling water mantle, which ruptures if the coolant chamber is subjected to abnormally high pressure. The bursting disc must only be replaced with original plates supplied by the compressor supplier.

Important: The safety valves, bursting disc and any other safety equipment must be inspected regularly.

Damaged components should always be replaced with original parts. Adjustment of the safety valves shall only be carried out by authorised personnel.


Date: 2016-01-14; view: 661


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True or false. If it is not right, please, correct it. | The compressor must not be used if the safety equipment is defective.
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