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must only be carried out by suitably trained and qualified
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 fitted at all times and not removed
unless the power supply has been isolated. If ductwork is
to be fitted, 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 finning on the air cooled condenser coils has 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.
Refrigerants and Oils
Refrigerants and oils used in the unit are generally
non-toxic, non-flammable and non-corrosive, and pose
no special safety hazards. Use of gloves and safety
glasses are, however, recommended when working on
10
the unit. The build up of refrigerant vapor, from a leak
for example, does pose a risk of asphyxiation in confined
or enclosed spaces and attention should be given to good
ventilation. For more comprehensive information on
safety precautions for use of refrigerants and oils, refer
to the Materials Safety Data tables provided on pages
10 through 13.
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 pres-
sure relief device(s). Detergents and solvents which may
cause corrosion should also be avoided.
EMERGENCY SHUTDOWN
In case of emergency the electrical option panel is fitted
with an emergency stop switch CB3 (Circuit Breaker
3). Separate Circuit Breakers, CB1 (System 1) and
CB2 (System 2), can also be used to stop the respective
system in an emergency. When operated, it removes the
electrical supply from the control system, thus shutting
down the unit.
JOHNSON CONTROLS
1
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