Emerson Liebert CRV User Manual page 3

IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
CAUTION
The manual is retained for the entire service life of the machine;
S
The user reads the manually carefully before carrying out any operations on the machine;
S
The control is used exclusively for the purpose for which it is intended; incorrect use of the
S
control shall release the manufacturer any liability.
This manual has been prepared to enable the end-user to carry out only the operation that can
be made with the panels closed. Any operation that require the opening of doors or equipment
panels must be carried out only by qualified personnel.
Each machine is equipped with an Electric Insulation device which allows the operator to work
in condition of safety. Switch off the machine with this electric insulation device before any
maintenance operation to eliminate risks remaining (electric shocks, burns, automatic restart-
ing, moving parts and remote control).
The panel key supplied with the unit must be kept by person responsible for maintenance.
For identification of the unit (model and serial no.) in case of the necessity for assistance or
spare parts, locate the identification label on the outside of the unit.
Potential hazards
The protective covers can be removed only after the electric power has been cut off by opening
the main switch.
A warning label on the front and back panels reminds that:
the machine restarts automatically,
S
the main switch must be opened before opening the internal compartments for any opera-
S
tion.
If the doors are opened immediately after the machine has been switched off, there might be
some hazard related to:
components still at
high temperature
components still at low
temperature
rotating elements
These residual risks are highlighted by warning labels on the machine
WARNING
Risk of electric shock. Can cause injury or death.
Disconnect local and remote power supplies before working within.
Before proceeding with installation, read all instructions, verify that all the parts are included
and check the nameplate to be sure the voltage matches available utility power.
The iCOM microprocessor does not isolate power from the unit, even in the "unit off" mode.
Some internal components require and receive power even during the "unit off" mode of iCOM
control.
The factory-supplied optional disconnect switch is inside the unit. The line side of this switch
contains live high-voltage.
The only way to ensure that there is NO voltage inside the unit is to install and open a remote
disconnect switch. Refer to unit electrical schematic.
Follow all local codes.
WARNING
Risk of explosive discharge from high-pressure refrigerant. Can cause injury or death.
This unit contains fluids and gases under high pressure. Relieve pressure before working with
piping.
electrical heaters
S
compressor , outlet area and outlet piping (about 100°C)
S
evaporator
S
fan impellers, they might continue to rotate for a while by
S
inertia
1