mycom i160M

2203M4JE-MY-iS2-N_2017.04.
Chapter 1 Safety
Screw Compressor i-series 1.3 Residual Risks
1-4
1.3 Residual Risks
The following information assumes that this product is operated or inspected/maintained as part of a
general package unit for refrigeration/cold storage. It is impossible to predict all the risk sources
involved in actual use of the package unit.
Devise appropriate countermeasures for hazardous sources in your systems.
Table 1-2
Hazardous Sources
Hazardous
sources
Predicted hazard
Measures to be taken
in operation
Countermeasures in
cleaning, inspection,
and parts replacement
A
Motor and
compressor
coupling
 Caught in or entangled in
due to contact
 Install cover on the
opening of coupling,
or prohibit opening.
 Keep away.
 Turn off motor main
power and control
power, and conduct
lockout/tagout.
B
Motor
terminals
 Electric shock caused by
contact with live wires or
electrical leakage
 Keep away.
 Do not open terminal
boxes.
 Do not touch
terminal boxes.
 Turn off motor main
power and control
power, and conduct
lockout/tagout.
C
Compressor
suction casing
 Frostbite due to contact
 Contact with or inhalation
of hazardous substances
generated by leakage of
refrigerant or the like
 Keep away and do
not touch.
 Wear protective
gear.
 Detect gas leakage.
 Wear protective
gear.
 Work under room
temperature.
D
Compressor
economizer
and/or liquid
injection port
around and
piping
 Burn injury due to contact
Contact with or inhalation
of hazardous substances
generated by leakage or
spout of refrigerant or the
like
 Keep away and do
not touch.
 Wear protective
gear.
 Detect gas leakage.
 Wear protective
gear.
 Work at a
temperature of not
higher than 40°C.
E
Compressor
discharge
casing and
discharge
piping
 Burn injury due to contact
Contact with or inhalation
of hazardous substances
generated by leakage or
spout of refrigerant or the
like
 Keep away and do
not touch.
 Wear protective
gear.
 Detect gas leakage.
 Wear protective
gear.
 Work at a
temperature of not
higher than 40°C.
F
Solenoid valve
for controlling
compressor
capacity
 Electric shock caused by
contact with live wires or
electrical leakage
 Install protective
cover on terminals,
and prohibit
opening.
 Keep away and do
not touch.
 Wear protective
gear.
 Turn off each
breaker and the
control power, and
conduct
lockout/tagout.
 Wear protective
gear.
G
Package Unit
Check valve,
service valve
and joint in
each section
 Contact with or inhalation
of hazardous substances
generated by mishandling
or leakage
 Frostbite or burn due to
contact
 Sufficient ventilation
 Indicate valve
open/close state.
 Keep away and do
not touch.
 Wear protective
gear.
 Sufficient ventilation
 Wear protective
gear.
 Tagout for controlled
valve
H
Package Unit
Solenoid valve
or motor
operated
valve
 Electric shock caused by
contact with live wires or
electrical leakage
 Pinched due to contact
with driving part
 Install protective
cover on terminals,
and prohibit
opening.
 Keep away and do
not touch.
 Wear protective
gear.
 Turn off each
breaker and the
control power, and
conduct
lockout/tagout.
 Wear protective
gear.