CAUTION: Risk of contact with hot surfaces. Can cause injury. The compressor, refrigerant
discharge lines, fan motor, and some electrical components are extremely hot during unit
operation. Allow sufficient time for them to cool to a touch-safe temperature before working
within the unit cabinet. Use extreme caution and wear appropriate, OSHA-approved PPE when
working on or near hot components.
CAUTION: Risk of handling heavy and lengthy parts. Can cause personal injury and equipment
damage. Cabinet panels can exceed 5 ft. (1.5 m) in length and weigh more than 35 lb. (15.9 kg).
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, OSHA-approved PPE should attempt to remove or install
cabinet panels.
CAUTION: Risk of smoke generation. Can cause fire suppression and alarm system activation,
resulting in injury during building evacuation and mobilization of emergency fire and rescue
services. Start-up operation of optional electric reheat elements can create smoke or fumes
that can activate the facility alarm and fire suppression system. Prepare and take appropriate
steps to manage this possibility. Activating reheat during initial start-up may burn off
particulates from electric reheat elements. Before beginning initial start-up checks, make
certain that unit was installed according to the instructions in this manual. All exterior panels
must be in place.
CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or
injury. Only properly trained and qualified personnel should work on this equipment. Fan
modules weigh in excess of 125-lb (56.7-kg). Use proper lifting techniques and wear
appropriate, OSHA-approved PPE to avoid injury and dropping the fan module during removal.
Equipment used in handling/lifting, and/or installing the fan assembly must meet OSHA
requirements. Use handling/lifting equipment rated for the weight of the fan assembly. Use
ladders rated for the weight of the fan assembly and technicians if used during installation.
Refer to handling/lifting, and/or installation equipment operating manual for manufacturer's
safety requirements and operating procedures.
CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss.
Depending on the installation and operating conditions, a sound pressure level greater than
70dB(A) may arise. Take appropriate technical safety measures. Operating personnel must
wear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safety
requirements.
CAUTION: Risk of contact with extremely hot water and part surfaces. Can cause burn injury.
The infrared humidifier bulbs, metal enclosure, humidifier water, water reservoir pan and drain
tubing are very hot during and shortly after operation. Allow sufficient time for these parts to
cool to a touch-safe temperature before handling. Use extreme caution, and wear appropriate,
OSHA-approved PPE when performing maintenance on the infrared humidifier.
1 Important Safety Instructions 7
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