Liebert PX018 Installer's/User's Manual page 12

NOTICE
Risk of improper water supply. Can reduce humidifier efficiency or obstruct humidifier
plumbing.
Do not use completely demineralized water with this unit. The water must contain minerals for
the electrode principle to work.
Do not use a hot water source. It will cause deposits that will eventually block the fill-valve
opening.
NOTICE
Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment
and building damage.
Do not install an external trap in the drain line. This line already has a factory-installed trap
inside the cabinet. Installation of a second trap will prevent drain-water flow and will cause the
water to overflow the drain pan.
This line may contain boiling water. Use copper or other material that is rated for handling
boiling water for the drain line. Sagging condensate drain lines may inadvertently create an
external trap.
NOTICE
Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit may
be too large to fit through a doorway or hallway while on the skid. Measure the unit and
passageway dimensions, and refer to the installation plans prior to moving the unit to verify
clearances.
NOTICE
Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at a
height suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.
NOTICE
Risk of improper storage. Can cause unit damage.
Keep the unit upright, indoors and protected from dampness, freezing temperatures and
contact damage.
NOTE: The Liebert indoor cooling unit has a factory-installed high-pressure safety switch in the high-
side refrigerant circuit. Consult local building codes to determine whether the Liebert MC Condensers
without receivers will require field-provided pressure-relief devices such as a fusible plug. A pressure-
relief valve is provided with Liebert Lee-Temp™ receivers and an integral, fusible plug is provided on
PDX-EEV unheated receivers.
Agency Listed
Standard 60-Hz units are CSA certified to the harmonized U.S. and Canadian product safety standard
CSA C22.2 No 236/UL 1995 for Heating and Cooling Equipment and are marked with the CSA c-us logo.
Vertiv | Liebert® PDX™ and PCW™ Installer/User Guide | 12