Figure 22: Liquid Line Service Port - Emerson Copeland EazyCool ZX Series Application Manuallines

Figure 22: Liquid line service port

NOTE: During the charging process on low temperature ZXLE units, an error message
E47 and/or E48 could occur. Both warnings are indicators for lack of refrigerant charge in
the system. The operation of the unit is not affected by the warning signals. Continue
charging the system: when the charge is sufficient the warnings will disappear
automatically.
4.2.2 Oil charging procedure
Copeland EazyCool ZX condensing units are supplied only with a compressor oil charge. 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 Climate Technologies recommends charging the oil 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.
NOTE: ZXDE & ZXLE units are equipped with an oil separator. This separator is pre-
charged with 0.5 litre of oil.
4.3 Rotation direction of Scroll compressors
Scroll compressors, like several other types of compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with single-phase compressors since they will
always start and run in the proper direction. Three-phase compressors are protected against
wrong rotation field by help of 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 and also
controls running time and minimal downtime. It is recommended to change these settings only in
exceptional cases.
4.5 Checks before starting & during operation
IMPORTANT
Liquid valves not fully opened! Liquid trap! Both valves should be fully
opened on the liquid line, in order to prevent trapping liquid.

Check that all valves are fully opened.

Set the essential parameters of the electronic controller in the programing level 1
(Refrigerant type, Compressor cut-out/in settings (ZXDE only), Fan setpoint....) according to
the required application.

We recommend to check the oil level in compressor after starting and operation conditions
have stabilised, and to add oil if needed to ensure a sufficient oil level (halfway up the sight
glass).
C6.1.6/0613-0915/E
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 system controller XCM25D
33