Liebert PX018 Installer's/User's Manual page 8

WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipment
damage, injury or death. Read all of the following instructions and verify that all lifting and
moving equipment is rated for the weight of the unit before attempting to move, lift, remove
packaging from or prepare the unit for installation. Unit weights are specified in Table 3.3 on
page 20.
WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment
damage, serious injury or death. Installation and service of this equipment should be done only
by qualified personnel, wearing appropriate, OSHA-approved PPE, who have been specially-
trained in the installation of air-conditioning equipment.
WARNING! Risk of improper wire and loose electrical connections. Can cause overheated wire
and electrical connection terminals resulting in smoke, fire, equipment and building damage,
injury or death. Use correctly sized copper wire only and verify that all electrical connections are
tight before turning power On. Check all electrical connections periodically and tighten as
necessary.
WARNING! Risk of smoke and fire. Can cause activation of fire suppression systems, building
evacuation, dispatching of fire/rescue equipment and personnel and catastrophic canister
failure resulting in water leaks, equipment damage, injury or death. Using a humidifier canister
that has reached the end of it's service life can be extremely hazardous. If the canister cannot
be replaced immediately at the end of life condition, turn Off the power and water supply to the
humidifier and remove the canister until a replacement canister can be installed. Do not ignore
humidifier problem alarms. Resetting humidifier without addressing cause may result in fire or
damage due to leaking water. See Table 9.4 on page 80, for alarm corrective actions.
WARNING! Risk of humidifier canister meltdown, smoke and fire. Can cause fire suppression
system activation, fire and smoke alarm activation, building evacuation, dispatching of fire and
rescue equipment and personnel and water leaks resulting in expensive equipment or building
damage, injury or death. Check steam generating humidifier electrode plugs to ensure that they
are pressed firmly onto pins. Loose connections will cause overheating of cylinder and plugs.
CAUTION: Risk of excessive refrigerant line pressure. Can cause tubing and component
rupture resulting in equipment damage and personal injury. Do not close off the refrigerant-line
isolation valve for repairs unless a pressure-relief valve is field- installed in the line between the
isolation valve and the check valve. The pressure-relief valve must be rated 5% to 10% higher
than the system-design pressure. An increase in ambient temperature can cause the pressure
of the isolated refrigerant to rise and exceed the system-design pressure rating (marked on the
unit nameplate).
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