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FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
The wet storage procedure is as follows if either chilled/
hot line or the cooling water line is an open system:
1. Completely drain the water from the systems if it
has deteriorated in quality.
2. Clean the water systems by passing clear water
through them from a position higher than the
chiller-heater.
3. Fill the water systems with clear water.
4. Circulate the clear water through the water pump
for 30 minutes to one hour to clean it.
5. Drain the water.
6. Completely fill the water systems with clear water
again.
7. Store the machine.
DRY STORAGE METHOD
The dry storage method should be used if the chilled/
hot water system or the cooling water system may
freeze in the winter or, if the water system has a lining
tube. Do not simply drain the chilled/hot, and the cool-
ing water and store the machine. This significantly in-
creases the possibility of corrosion of the heat transfer
tube and rust. For details, see Table 33 on page 153.
The dry storage procedure is as follows if either the
chilled/hot line or the cooling water line is an open sys-
tem:
1. Completely drain the water.
2. Clean the water systems by passing clear water
through them from a position higher than the
chiller-heater.
3. Fill the water systems with clear water.
4. Circulate the clear water through the water pump
for 30 minutes to one hour to clean it.
5. Drain the water from each waterbox.
6. Dry the interior of each waterbox and the heat
transfer tube.
7. Store the machine.
JOHNSON CONTROLS
PRECAUTIONS AGAINST EXTERNAL
DAMAGE
Avoid storing the machine in a place that is easily ac-
cessible or near a construction site. If this is unavoid-
able, provide the machine with protection.
If it is not possible to protect the machine, fill the in-
terior with N2 to minimize the amount of air leakage.
For details, contact your local Johnson Controls ser-
vice center.
SECTION 7 – MAINTENANCE
155
7
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