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.
Unit
Residual risk
Action
Precautions
water cooler, frame
minor cuts
touching
avoid touching, wear
protective gloves
screw assembly, end
cooler, pressure
conduits
danger of
scalds
touching
avoid touching, wear
protective gloves
metallic parts and
electric wire
electric shock
damage of wire
insulation upstream
the motor breaker,
live metallic parts
adequate guard for the
power supply lead; check
the wire insulation for
damages
around the
compressor
danger of scalds
fire due to shorting
or overheating of the
power cord before
the electrical box
use the cross section of the
power cord and the
protection corresponding to
the applicable standards
