SECTION 9 - MAINTENANCE
JOHNSON CONTROLS
175
Form 201.47-ICOM1
Issue date: 17/11/2022
9
The procedure listed below must be followed to touch-
up end tubes and condenser coil headers:
1. 2-Part Urethane Mastic kit consists of Component
A-Urethane Mastic (black component) and Com-
ponent B-Urethane Mastic Activator (clear com-
ponent).
2. Thoroughly stir the can containing component A
(Urethane Mastic). It is important to stir the Ure-
thane Mastic thoroughly to ensure any settled pig-
ment is dispersed before application.
3. Gently shake the can containing component B
(Activator).
4. Urethane Mastic and Activator should be mixed
in a 5:1 ratio. Using one dropper, add 5 mm of
component A to the mixing dish.
5. Using the second (clean) dropper, add 1 ml of
component B to the mixing dish.
6. Mix the components well and allow the solution
in the dish to set for 30 min. Power mixing is pre-
ferred. If needed, make more amount of solution
for application.
7. Using the paint brush, apply the touch up paint to
the end tubes and/or coil headers as needed.
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
013-04187-000 Paint, touch-up, 12 oz
013-04188-000 Mastic, 2-part Urethane
Chilled liquid system maintenance
Whenever the chilled liquid system requires main-
tenance, adhere to and observe all precautions noted
below.
Scheduled maintenance
The YVAA chiller is equipped with Service Reminder
Warnings that show service reminders on the chiller
panel every 3 months, 12 months, 36 months, and 60
months from the date of last service. The maintenance
operations detailed in the following table should be
carried out on a regular basis by a suitably qualified
Service Engineer. It must be noted that the interval
necessary between each minor and major service can
vary depending on, for instance, application, site con-
ditions and expected operating schedule. Normally a
minor service must be carried out every three to six
months and a major service once a year. It is recom-
mended that your local Johnson Controls Service Cen-
ter is contacted for service recommendations for indi-
vidual sites.
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.
Chiller/compressor operating log
A Chiller/Compressor Operating Log is supplied at the
end of this section for logging compressor and chiller op-
erating data.
Table 31 - Part numbers
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