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SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
In the event that the circuit breaker or disconnect
switch is activated, eliminate the cause of the problem
before restarting the unit. See SECTION 8 – TROU-
BLESHOOTING.
The shut off valve for the pressure release valve must be
opened constantly remain open. It may only be closed
when servicing the pressure relief valve. The unit must
never be operated with this shut off valve closed.
Verify the main valve for the fuel gas is closed before
servicing the chiller-heater. Only a Johnson Controls
service representative can modify the main gas valve
or any of the fuel control devices after the chiller-heat-
er has been serviced. Operation of the chiller-heater
by an inexperienced person could result in incomplete
combustion, fire, or injury.
Do not touch any part or component displaying a
high tem perature caution label while the machine is
in opera tion. This includes the control panel, solution
pump, vacuum pump and any piping going to or from
the solution and vacuum pump.
Periodically inspect the strainers to prevent clogging
and incomplete combustion.
Wear protective gloves and goggles when operating the
chiller-heater.
Do not operate the machine with panel doors open or
removed. Exposure to rainwater or wind pressure can
damage the electrical parts of the unit or cause leakage.
During service and maintenance work, be
sure to turn OFF the main circuit breaker
(MCB1) and follow all required Lockout
and/or Tagout procedures Close the main
valve of the fuel gas line. If not, it may
cause electric shock and burn.
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If the cables of the solution pump, refrigerant pump,
burner fan, and/or vacuum pump are disconnected for
service and maintenance work, be sure to check the ro-
tating direction of the pump motor. If not, the chiller-
heater may malfunction. When changing the oil of the
purge pump, be sure to stop the purge operation.
In case of an accident such as death or serious damage
of personnel, turn OFF the circuit breaker (MCB1) to
stop the chiller-heater immediately.
LEAK TESTING
When leak testing, verify the area is properly venti-
lated. Failure to do so may result in suffocation.
ELECTRICAL SHOCK CAUTIONS
Do not touch any switch in the control panel with wet
hands; this can cause electric shock.
Do not touch the wiring in the control panel; this can
cause electric shock.
Do not touch any part other than the control panel of
the machine and the valves described in the operating
manual; this can cause a problem and injury.
Apply only the specified source voltage. Application
of a different source voltage can cause a fire and elec-
tric shock.
Welding should only be done in certain circumstances.
Be careful not to compromise the integrity of the ves-
sel. Prior to welding, verify that the electrical system is
grounded properly. Failure to do this can result in elec-
trical shock, injury, and/or damage to the chiller-heater.
Do not splash water over the machine and its control
panel; this can cause an electric shock.
A warning label for electric shock is pasted at the con-
trol panel, solution pump, refrigerant pump, the termi-
nal box of the vacuum pump motor, and the burner fan
motor. Prior to opening the terminal box, be sure to
stop the chiller-heater and turn OFF the main circuit
breaker (MCB1). If not, electric shock may result.
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
JOHNSON CONTROLS
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Table of Contents
Troubleshooting
