mycom 170JL-V, Operation Manual

2202B0JE-DA-J-N_2012.01. 

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 Material Safety Data Sheets (MSDS) 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 Material Safety Data Sheets (MSDS) 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. 

1.1.1.3  Do's on Lockout/Tagout after Shutting off the Power 



Prepare lockout/tagout devices for the main breakers of the main motor and control power. 



By applying lockout/tagout after shutting off the power, you can prevent any other personnel from 
activating the machine (power) inadvertently and protect safety of the personnel working inside the 
power supply equipment and the package.