JOHNSON CONTROLS
12
FORM 150.67-NM2 (209)
General Chiller Introduction & Safety
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
fi
ed personnel.
Electrical
The unit must be grounded. No installation or
maintenance work should be attempted on the
electrical equipment without
fi
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
fi
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
fi
tted at all times and not
removed unless the power supply has been isolated. If
ductwork is to be
fi
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
fi
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-
fl
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
fi
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
fi
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.
Summary of Contents for YCAL0019
Page 55: ...FORM 150 67 NM2 209 55 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD12699D...
Page 57: ...FORM 150 67 NM2 209 57 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD12693C...
Page 59: ...FORM 150 67 NM2 209 59 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD 12198...
Page 61: ...FORM 150 67 NM2 209 61 JOHNSON CONTROLS 5 5 LD12702 ELEMENTARY WIRING DIAGRAM CON T...
Page 63: ...FORM 150 67 NM2 209 63 JOHNSON CONTROLS 5 5 LD12696 ELEMENTARY WIRING DIAGRAM CON T...
Page 65: ...FORM 150 67 NM2 209 65 JOHNSON CONTROLS 5 5 CONNECTION WIRING DIAGRAM CON T LD12703B...
Page 67: ...FORM 150 67 NM2 209 67 JOHNSON CONTROLS 5 5 CONNECTION WIRING DIAGRAM CON T LD12697B...
