Maximum Compressor Cycle; Checks Before Starting & During Operation - Emerson Copeland Eazycool OMTE-90D-TFD Application Manuallines

4.4

Maximum compressor cycle

Maximum permitted starts per hour: 10.
considers the maximum permitted starts and stops of the compressor and 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 liquid trapping.
Before a system runs for the first time:
▪
Check that the valves on the liquid line are fully opened.
▪
Set the essential parameters of the electronic controller in the programming level 1 (compressor
cut-out/cut-in settings, condensing fan setpoint....) according to the required application.
▪
Carry out visual inspection.
▪
Check fan rotation before starting compressors and turn fans on manually
▪
Perform control tests to ensure all controls operate correctly, including any manual backup
system.
▪
Check also the following:
✓ Documentation for the system and its marking, especially pressure equipment
✓ Installation of safety devices
✓ Set pressure of all safety devices and other pressure cut-outs
✓ Compressor and oil reservoir oil levels
✓ Cores fitted in filter dryers
✓ Pressure test records
✓ All valves open/closed as required for operation
After start-up and when operation conditions have stabilised:
▪
It is recommended to check the oil level in the compressors and to add oil if necessary to ensure
a sufficient oil level (halfway up the sight glass).
▪
The following should also be checked:
✓ Phase rotation of scroll compressors
✓ Fan rotation
✓ Refrigerant level
✓ Oil level in oil reservoir
✓ Expansion valve superheat
34
The factory setting of the XCM25D system controller already
C6.1.9/0219/E