Installation manual

48 Magnitude™ Frictionless Centrifugal Chillers – Model WMC IM 1029-2
Long Term Storage
This information applies to new units being stored waiting for startup or to existing units that may be
inoperative for an extended period of time.
The chiller must be stored in a dry location indoors and protected from any damage or sources of corrosion.
A Daikin service representative must perform an inspection and leak test of the unit on minimum quarterly
schedule, to be paid by the owner or contractor. Daikin will not be responsible for any refrigerant loss
during the storage time or repairs to unit during period of storage, or while moving the unit from original
location to a storage facility and back to any new installation location.
T
he following tasks must be performed:
1. As discussed above, the first and foremost task is to leak test the unit when it is in its final storag
e
l
ocation. If any leaks exist, repair them immediately. After the unit is stored, perform a periodic leak
test.
2. It is possible that the unit could be bumped, hit or otherwise damaged while in
storage; so in addition to
l
eak testing, a visual overall inspection should be done
.
3. If there is concern about the possibilities of damage and loss of charge during storage, the customer can
pay to have the charge removed and stored in recovery cylinders. If this is done, pressurize it to about
20 psi with nitrogen .Monitor and maintain the pressure. Install a pressure gauge that can easily be read
or tie in a remotely alarm that can be monitored if pressure reduces. This is desirable if the unit is stored
with refrigerant or with a nitrogen holding charge.
4. If the unit has been shipped and not yet installed, keep it pumped down (as shipped from the factory)
with all refrigerant valves closed and capped.
5. Clean and dry the unit and look for any chipped paint. Touch up as required to prevent rust
.
6. I
f the storage area is subject to a high humidity, consider a shrink wrap or water resistant covering of
some sort. Desiccants must be placed inside electrical panels and starters (mounted or shipped loose)
and be renewed as recommended by manufacturer. Remove the compressor top cover and place
a
desiccant under the cover. Reinstall the cover and tighten all screws.
7. The operator touchscreen monitor, which is shipped loose should be stored in a secure dry area. It is
subject to pilferage.
8. Regardless of the temperature of the
storage area, make sure all vessel tubes are drained and blown dry
of any water to prevent the minerals in standing water, plus oxygen present, causing tube pitting
.
9. Restart by a Daikin service technician will be required and paid to Daikin by the owner or
contractor. It is prudent to take photos when the unit is stored to show that the conditions of storage
have been met. Also document all inspection reports and abnormal conditions found. If the unit has
been in operation, the run-time hours and number of starts must be documented prior to storage,
along with the date the unit was taken out of operation. The extended warranty coverage can be
suspended during the storage period-not to exceed 30 months. The remaining warranty time will restart
once unit is reinstalled and officially re-commissioned by Daikin Factory Service