Operating and Maintenance Manual 09/2019 – part I
Screw compressors
9
2.2. Operating safety requirements
In addition to the requirements contained in the sections: Screw compressor operation
description; Start up; Maintenance; the following rules should be observed.
- The compressor is only designed to compress air.
- All safety equipment must be in place while operating the machine.
- The factory-mounted safety equipment must not be removed. Please, remember to remove
any transport brackets (if applicable)before first start-up of the compressor. The transport
brackets are only used to protect the machine during transport.
- There are hot parts in the compressor e.g. conduits, air and oil coolers, screw block. They
will scald when touched.
- No unauthorized modifications in the control system are allowed. After power failure,
the compressor must be restarted when the power supply is recovered.
- It is prohibited to remove the green and yellow protective conductors that prevent electric
shock.
- No additional equipment can be mounted on the air receiver(except for the equipment
allowed for use by the manufacturer).
- No welding operations or any other repairs can be performed on the air receiver.
- The plugs and other air receiver accessories can only be removed after the air receiver
depressurisation to the ambient pressure.
- General safety rules should be observed while depressurising the air receiver. Air must be
vented slowly. Keep the air stream away from people.
- Do not allow oil spill around the compressor.
- It is strictly prohibited to service the safety valves or to change their settings.
- Do not change settings of the pressure switches above the value given in the identification
plate or in the Operating and Maintenance Manual.
- Fulfil the obligation to register the compressor air receiver in the Office of Technical
Inspection (UDT). Two sets of the required documents of the air tank (if provided) and
safety valve are included with the compressor documentation. The compressor
documentation is accompanied by the set of the required documentation of the air receiver
(if applicable) and safety valve.
- Do not remove the temperature sensor (transmitter) or pressure transmitter.
2.3. Other hazards
The compressor installation, switching on/off and maintenance must be carried out by the
qualified personnel who strictly follows the data included in the product technical
documentation and safety rules to avoid any hazards. The risks that could not have been
eliminated during the design stage are described in the table below.
Fig. 2 Transport of the machine with a
crane.
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