Specifications

JOHNSON CONTROLS
14
FORM 150.72-NM1 (908)
General Chiller Introduction & Safety
General Access
There are a number of areas and features, which may
be a hazard and potentially cause injury when working
on the unit unless suitable safety precautions are taken.
It is important to ensure access to the unit is restricted
to suitably qualied persons who are familiar with the
potential hazards and precautions necessary for safe
operation and maintenance of equipment containing
high temperatures, pressures and voltages.
Pressure Systems
The unit contains refrigerant vapor and liquid under
pressure, release of which can be a danger and cause
injury. The user should ensure that care is taken during
installation, operation and maintenance to avoid damage
to the pressure system. No attempt should be made
to gain access to the component parts of the pressure
system other than by suitably trained and qualied
personnel.
Electrical
The unit must be grounded. No installation or
maintenance work should be attempted on the electrical
equipment without rst switching power OFF, isolating
and locking-off the power supply. Servicing and
maintenance on live equipment must only be performed
by suitably trained and qualied personnel. No attempt
should be made to gain access to the control panel or
electrical enclosures during normal operation of the
unit.
Rotating Parts
Fan guards must be tted at all times and not removed
unless the power supply has been isolated. If ductwork is
to be tted, requiring the wire fan guards to be removed,
alternative safety measures must be taken to protect
against the risk of injury from rotating fans.
Sharp Edges
The ns on the air-cooled condenser coils have sharp
metal edges. Reasonable care should be taken when
working in contact with the coils to avoid the risk of
minor abrasions and lacerations. The use of gloves is
recommended.
Frame rails, brakes, and other components may also have
sharp edges. Reasonable care should be taken when
working in contact with any components to avoid risk
of minor abrasions and lacerations.
Refrigerants and Oils
Refrigerants and oils used in the unit are generally
nontoxic, non-ammable and non-corrosive, and pose
no special safety hazards. Use of gloves and safety
glasses is, however, recommended when working on the
unit. The build up of refrigerant vapor, from a leak for
example, does pose a risk of asphyxiation in conned or
enclosed spaces and attention should be given to good
ventilation.
High Temperature and Pressure Cleaning
High temperature and pressure cleaning methods (e.g.
steam cleaning) should not be used on any part of the
pressure system as this may cause operation of the
pressure relief device(s). Detergents and solvents, which
may cause corrosion, should also be avoided.
Emergency Shutdown
In case of emergency, the control panel is tted with
a Unit Switch to stop the unit in an emergency. When
operated, it removes the low voltage 120 VAC electrical
supply from the inverter system, thus shutting down
the unit.