JOHNSON CONTROLS
201
SECTION 10 – MAINTENANCE
FORM 150.72-ICOM6
ISSUE DATE: 08/03/2022
10
8. Visually inspect the Environment Guard Premi-
um coating for any damage, degradation, or bare
spots. If touch up of the coating is necessary, fol-
low the process and materials approved by John-
son Controls in the condenser coil repair guide.
PART NUMBER (P/N) DESCRIPTION
013-04185-000 Cleaner, Coil, 4-1 gal
013-04185-001 Cleaner, Coil, 1 gal
013-04186-000 Reducer, Salt, 4-1 gal
013-04186-001 Reducer, Salt, 1 gal
OPERATING PARAMETERS
Perform regular checks on the system to ensure that
operating temperatures and pressures are within limi-
tations, and that the operating controls are set within
proper limits. See SECTION 8 – UNIT OPERATION,
SECTION 6 – COMMISSIONING, and SECTION 4 –
INSTALLATION.
ON-BOARD BATTERY BACKUP
The Real Time Clock chip (U5) located on the 031-
02630 IPU II board that maintains the date/time and
stores customer programmed setpoints.
Do not confuse JP1 on the IPU II (031-
02630) board with JP1 on the I/O (031-
02550) board.
THERMAL DISPERSION FLOW SWITCH
Check the sensor tip for buildup regularly, because it
can affect the sensitivity of the sensor.
In case of any buildup at the sensor tip, use a soft cloth
to remove it. Use vinegar as the cleaning agent to re-
move any stubborn buildup if necessary.
BRAZED PLATE HEAT EXCHANGER
(EVAPORATOR) HEATER
The internal power supply to the Evapo-
rator Heater is 120 VAC. Disconnecting
120 VAC power from the unit, at or below
freezing temperatures, can result in dam-
age to the evaporator and unit as a result
of the chilled liquid freezing.
OVERALL UNIT INSPECTION
In addition to the checks listed on this page, perform
periodic overall inspections on the unit to ensure prop-
er equipment operation. Investigate and correct imme-
diately items such as loose hardware, component op-
eration, refrigerant leaks, and unusual noises.
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