2205B0JE-DA-J-N_2014.05.
1 Safety
Screw Compressor J-series
1.1 Observation/Prevention
1-1
1 Safety
1.1 Observation/Prevention
1.1.1 Observance
(Do's)
1.1.1.1 Do's on Operation
Always use the specified controller (CP4) designed for this product.
This controller protects the compressor utilizing sensor output values.
Make sure that all necessary safety devices are installed and the control values for machine
protection are set correctly.
Regularly inspect the safety devices and the controller's protective functions. Ensure that they
operate properly.
If the safety devices and the controller's protective functions do not work properly or the
machine operates abnormally, stop operation immediately and report the incident to your
supervisor. Do not restart the machine until the supervisor determines the machine safety and
provides proper instructions for restart.
If the machine stops due to unknown reasons, immediately inform your supervisor. Do not
restart the machine until the supervisor determines the machine safety and provides the proper
instructions for restart.
Some types of refrigerants generate bad smell or toxic gases and cause oxygen deficiency.
Make sure to ventilate the working area.
Some refrigerants and refrigerant oils may be corrosive, decomposable, or toxic. Make sure to
obtain the Safety Data Sheets (SDS) of the refrigerants and refrigerant oils and follow their
instructions.
When stopping the compressor for a long time, turn "OFF" the main motor, heater, and control
power. Close the suction and discharge side shut-off valves.
1.1.1.2 Do's on Maintenance
When performing work with at least two or more persons, thoroughly confirm the work
procedure and clearly understand each others work before commencement.
Always turn OFF and lockout /tagout the main motor, control and other devices before
troubleshooting, setup, cleaning, maintenance, or inspection of the compressor. Also, make
sure that those powers are NOT turned on accidentally during work.
Always confirm that the pressure inside the package (refrigerating/cold storage/ air
conditioning) is atmospheric before troubleshooting, setup, cleaning, maintenance or
inspection of the compressor.
Before troubleshooting, setup, cleaning, servicing or inspection of the compressor, apply
lockout/tagout or other equivalent measures to the liquid supply stop valves and valves in the
upstream and downstream of any opening so that the valves do not open accidentally during
the work.
Some types of refrigerants generate bad smell or toxic gases and cause oxygen deficiency.
Make sure to ventilate the air during work.
Some refrigerants and refrigerant oils may be corrosive, decomposable, or toxic. Make sure to
obtain the Safety Data Sheets (SDS) of the refrigerants and refrigerant oils and follow their
instructions.
After working on the machine, always store the tools used at the specified places and make
sure that no tools are left in or around the machine.
