2205B0JE-DA-J-N_2014.05.
1 Safety
Screw Compressor J-series
1.3 Residual Risks
1-7
1.3 Residual
Risks
The following information is provided on the assumption that this product is operated, inspected, and
maintained while being used in general refrigerating, cold storage, and air conditioning packages.
Note that all hazardous sources cannot be predicted for the applications mentioned.
Devise appropriate countermeasures for hazardous sources in your systems.
Table 1-3 Hazardous Sources
Danger source
Predicted hazard
Measures to be taken
in operation
Measures to be taken
when cleaning,
inspecting, and
replacing parts
A Motor
and
compressor coupling
Entanglement caused
by contact
Install coupling covers
and prohibit opening
Keep away
Shut off and
lockout/tagout of
motor’s main power
and control power
B Motor terminals
Electric shock caused
by live wiring
contact and
electrical leakage
Keep away
Do not open terminal
box
Do not touch terminal
box
Shut off and
lockout/tagout of
motor’s main power
and control power
C Compressor
suction
casing
Frostbite caused by
contact
Contact with or
inhalation of
hazardous
substances caused
by leaking
refrigerant, etc.
Keep away and do not
touch
Wear protective gear
Gas leakage detection
Wear protective gear
Work under normal
temperature
D Compressor
discharge casing
Burn caused by
contact
Contact with or
inhalation of
hazardous
substances caused
by leaking and
blowing off
refrigerant, etc.
Keep away and do not
touch
Wear protective gear
Sufficient ventilation
Gas leakage detection
Wear protective gear
Work in temperatures
below 40 °C
Appropriate refrigerant
handling
Sufficient ventilation
E Discharge
piping
F Lubricating
piping
and joints
G Package
unit
Solenoid
valves/motorized
valves on each part
Electric shock caused
by live wiring
contact and
electrical leakage
Trapping caused by
contact with a drive
part
Install terminal
protective cover and
prohibit opening
Keep away and do not
touch
Wear protective gear
Shut off each breaker,
and shut off and
lockout/tagout the
control power
Wear protective gear