Installation, Operation and Maintenance Manual
Page
iv
WARNING
The Data Aire dap4 or Mini-dap4 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 Data Aire dap4™
control.
The factory-supplied optional disconnect switch is located ins
ide the unit’s
electrical control panel. The supply voltage side of the disconnect 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 facility disconnect switch.
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.
WARNING
Risk of refrigerant system rupture or explosion from over
pressurization can cause equipment damage, injury or death.
WARNING
Risk of contact with high-speed moving parts can cause injury or
death. Disconnect all local and remote electric power supplies before working
in the unit. Do not operate unit with any or all cabinet panels removed. Do not
operate up flow units without installing a plenum, ductwork or guard over the
blower opening(s) on the top surface of the unit cabinet. Ductwork must be
connected to the blower(s), or a plenum must be installed on the blower deck
for protection from rotating blower wheel(s) on up flow units.
CAUTION
Risk of contact with hot surfaces can cause injury. The compressors,
refrigerant discharge lines, humidifiers and reheats are extremely hot during
unit operation. Allow enough time for them to cool before working within the
unit cabinet. Use extreme caution and wear protective gloves and arm
protection when working on or near hot compressors, discharge lines,
humidifiers and reheats.
CAUTION
Risk of handling heavy and lengthy parts can cause personal injury and
equipment damage. Follow relevant OSHA lifting recommendations and
consider using a two-person lift for safe and comfortable removal and
installation of cabinet panels. Only properly trained and qualified personnel
wearing appropriate safety headgear, gloves and shoes should attempt to
remove or install cabinet panels.
NOTICE
Risk of clogged or leaking drain lines can cause equipment and building
damage. This unit requires a condensate water drain connection. Drain lines
must be inspected regularly and maintenance must be performed to ensure
that drain water runs freely through the drain system and that lines are clear