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Service valves
Valve covers
Figure 22: Service valves for refrigerant charging
Figure 23: Liquid line service port
4.2.2 Oil charging procedure
Copeland EazyCool ZXDI indoor condensing units are pre-charged with oil. After commissioning,
the oil level should be checked and topped up if necessary.
NOTE: The oil level should be approximately halfway up the sight glass.
Emerson recommends charging with one of the following oil types:
▪
Emkarate RL 32 3MAF
▪
Mobil EAL Arctic 22 CC
Charging is done through the Schraeder valve located on the suction valve.
4.2.3 Oil separator
The ZXDI units are equipped with an oil separator. This separator is pre-charged with 0.5 liter of
oil.
4.3
Rotation direction of Scroll compressors
Scroll compressors, like several other types of compressors, will only compress in one rotational
direction. Three-phase compressors are protected against wrong rotation field by the unit
controller.
4.4
Maximum compressor cycle
Maximum permitted starts per hour: 10.
already takes into account the maximum permitted starts and stops of the compressor. It also
controls the running time and the minimal downtime. It is recommended to change these settings
only in exceptional cases.
C6.1.10/0118-0318/E
Schraeder valves
An additional Schraeder connection is fitted on the liquid line
below the filter drier in the compressor chamber. It is also
possible to use this connection for charging or servicing.
Recommendation is to break vacuum in the system with partial
charge of refrigerant, then start the system.
For charge adjustment it is recommended to check the liquid
sight glass just before the expansion valve.
The factory setting of the XCM25D system controller
Hexagone socket wrench
29
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