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SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
INSPECTION
The unit must be inspected prior to customer use by a
Johnson Controls Service representative. All damage
or possible damage must be reported to the transporta-
tion company. For more information, see SECTION 5
- COMMISSIONING.
NOTE: If the chiller is shipped as dry
shipment, the chiller will be cwharged
the N2 to 4 PSIG in shell side. The solu-
tion and refrigerant water will be in the
barrels separately.
INSTALLATION GUIDELINES
When evacuating the nitrogen charge (from the fac-
tory), be sure the area is properly ventilated. Failure to
do this could result in suffocation.
When storing the absorption chiller unit after it has
been delivered, note the following potential issues:
1. Problems with machine in storage:
a. Breaking of thin pipes caused by freezing of
the refrigerant (water) sealed in the machine
and resulting air leak (if solution and refrig-
erant is charged).
b. Breaking and air leak due to external damage
c. Deterioration of electrical parts caused by
soot and dust
d. Deterioration of electrical parts caused by
rainwater (moisture)
e. Rusting of the machine body caused by rain-
water (moisture). Air leaks can cause serious
damage and are costly repairs. Therefore,
use diligence in keeping the machine body
free from moisture at all times.
22
2. Problems and Preventative Measures
PROBLEM
PREVENTATIVE MEASURE
Freezing of
Store the machine where the ambient
refrigerant in
temperature is higher than 32 °F. If the
machine
ambient temperature drops below 32 °F,
use a heater to warm the machine. If a
heater is not accessible, the following
options are available to prevent freezing:
• Extraction of the refrigerant
• Addition of antifreeze to the refrigerant
• Installation of a band heater
For further instruction, contact your
nearest authorized Johnson Controls
Service Center.
External
Avoid storing the machine in a place
Damage
which is easily accessible or near a
construction site. If this is unavoidable,
use diligence to protect the machine. For
further information contact your nearest
authorized Johnson Controls Service
Center.
Soot & Dust
To protect the machine from soot & dust
(or other air particulates) cover the entire
machine, including the control panel,
instruments and gauges located on top
of the machine with a vinyl sheet. Use
caution not to apply too much pressure to
the controls to prevent damage.
Rainwater
Avoid storing the machine in areas that
are exposed to rainwater or other standing
water.
3. Periodic Inspection and Maintenance
a. Inspect the machine weekly for damage.
b. Check the machine compound gauge daily to
verify there is no decline in vacuum and re-
cord the vacuum value (-760 to -38 mmHg).
If the vacuum is below the low limit, contact
your nearest authorized Johnson Controls
Service Center immediately.
c. If the vacuum has dropped as a result of
improper machine operation, contact your
nearest authorized Johnson Controls Service
Center immediately.
Use care that foreign matter does not enter
the drain valve and air vent valve in the
water chamber casing. Keep these valves
fully open while the machine is in storage.
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
JOHNSON CONTROLS
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Troubleshooting
