JOHNSON CONTROLS
111
SECTION 6 – OPERATION
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
6
FAILURE
NAME
OPERATION
AT FAILURE
OCCURRENCE
CAUSE
COUNTER MEASURES
Emergency
Failure
Interlock
Stop without
dilution
Emergency failure interlock
was not established.
Check equipment connected as emergency failure
interlock components.
Low Cooling
Water Inlet
Temperature
Stop after
dilution
Cooling water inlet temperature
had been kept at its lower
limit or lower for 30 minutes or
longer during cooling operation
Check the cooling water inlet temperature control
system
Cooling Water
Suspension
(Option)
Stop without
dilution
Cooling water suspension
detected continuously during
solution pump automatic
operation while cooling
operation.
• Check the cooling water pump.
• Check the cooling water line.
• Check the cooling water flow.
• Check the cooling water suspension relay.
• Check whether or not the pipe is clogged.
HG High
Temperature
Stop after
dilution
HG solution temperature rose
up abnormally
• Check the cooling water line.
• Check the cooling water flow rate.
• Check the cooling tower.
• Purge manually (according to instructions in
SECTION 7- MAINTENANCE
on
HG High
Pressure
HG pressure rose up
abnormally
High Cut
HG high pressure relay or
exhaust gas high temperature
relay was activated.
High
Exhaust Gas
Temperature
Exhaust gas temperature at
HG outlet rose up abnormally.
Contact your local Johnson Controls Service Center.
Flame Failure
Flame signal was not detected
during operation, and then
protect relay (burner controller)
was locked out
Contact your local Johnson Controls Service Center.
Fuel Line
Abnormal
Abnormal fuel gas (gas-fired)
or oil (oil-fired) pressure was
detected during combustion.
Check if gas supply pressure is within acceptable
range.
HG Low Liquid
Level
HG low liquid level had been
detected continuously during
combustion.
• Purge manually (according to instructions in
SECTION 7- MAINTENANCE
on
• Contact your local Johnson Controls Service Center.
Solution
Circulation
Pump
Abnormal
Stop without
dilution
Solution circulation pump
thermal relay, or overheat
switch was activated.
Contact your local Johnson Controls Service Center.
Solution
Spray Pump
Abnormal
Solution spray pump thermal
relay, or overheat switch was
activated.
Refrigerant
Pump
Abnormal
Refrigerant pump thermal
relay, or overheat switch was
activated.
Burner Fan
Abnormal
or Oil Pump
Abnormal
Stop after
dilution
Burner fan thermal relay was
activated.
TABLE 20 -
FAILURE LIST (CONT'D)