2200M4JE-HO-iS2-N_2014.04.
Chapter 1 Safety
Screw Compressor i-series
1.1
Observation/Prevention (DOs and DON'Ts)
1-1
Chapter 1 Safety
1.1
Observation/Prevention (DOs and DON'Ts)
1.1.1 DOs
1.1.1.1 DOs on Operation
Make sure to attach safety and protective devices to the package unit.
The safety devices and protection systems must be regularly checked for their normal
operation.
If any safety device or protection system does not function normally or this product operates in
an abnormal manner, immediately stop the work and contact your supervisor. When the
system is to be restarted, you must observe the decision and instruction of the supervisor.
If this product has stopped operation due to an unknown cause, immediately contact your
supervisor. Before restarting the system, you must seek the decision and instruction of the
supervisor.
Depending on the type of refrigerant used, its leakage may generate a bad smell or poisonous
gas. Be sure to sufficiently ventilate the room while the machine is operated.
Regarding the characteristics of the refrigerant and lubricant, e.g., corrosiveness, degradability,
and toxicity, be sure to obtain the Safety Data Sheet (SDS) of them and follow the instructions
given.
When this product is not to be used for some period of time, close the suction (side) and
discharge (side) stop valves and shut off the motor power source, heater power, and control
power.
1.1.1.2 DOs on Maintenance
Prepare work procedures based on a work plan. Be sure to perform danger forecasting before
starting the work.
If two or more people are to work together, be sure to mutually check the work details and
procedures before the work. During the work, always keep track of the other workers’ actions.
Before working on any troubleshooting during operation, before setting up this product, before
cleaning work, and before conducting maintenance or inspection work, be sure to shut off the
motor power source, control power, and power to other equipment, perform lock-out and
tag-out procedures, and take effective measures to prevent any accidental power-on during
the work.
Before working on any troubleshooting during operation, before setting up this product, before
cleaning work, and before conducting maintenance or inspection work, be sure to check that
the internal pressure of this product and the refrigeration/cold storage unit is at the
atmospheric pressure.
Depending on the type of refrigerant used, it may generate a bad smell or poisonous gas or
could cause an oxygen deficient atmosphere. Before starting the work, measure the oxygen
content in the work area, as appropriate, and provide sufficient ventilation. The ventilation
must be continued steadily until the work is completed.
For the properties of refrigerant and lubricant (corrosiveness, decomposability or toxicity), be
sure to obtain the Safety Data Sheet (SDS) and follow the relevant information.
After work, the tools used must be returned to the predefined location. Be sure not to leave
them inside the package unit.
