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User Guide | Optyma™ iCO2
Commissioning check sheet
Item 1. ~8. in the commissioning check sheet is the same as in the Design check sheet. This item (1.~8.) is omitted in this manual.
Date:
/ /
9. Test run (Refrigerant oil check operation)
Confirm oil check operation without
9.01
"OIL-Lo" indication on 7 segment display
Record the "Operation data check sheet"
9.02
during oil check operation.
10. Test run (Oil return operation)
10.01
Did you execute the oil return control?
Does the oil return control start when
10.02
the external input "CNS3" is connected?
Did you write down the "Operation data
10.03
check sheet" during oil return control.
11. Operation check of alarm
Disconnect the sensor to confirm if the
11.01
alarm is working.
5.3 Request for maintenance and inspection
(1) Maintenance and inspection
• The list shows contents of regular inspection and replacement guideline under general usage condition. The cycle of regular inspection is on an annual
basis and it shows estimated cycle for component replacement and repair as the replacement guideline based on the result of the regular inspection.
«Under the general usage condition» supposes 7 minutes of stop-start cicle and 5,000 running hours per year upon normal operational condition.
• Excecute maintenance and inspection for load side (unit cooler and show-case) and module controller in accordance with criteria of load side and
module controller. In case that adjustment, maintenance and inspection for load side and module controller are not adequate, there is significant
harmful effect on condensing unit.
• Condensing unit shall be utilized as putting in the system via on-site construction works like installation, refrigerant pipe work and electric work and
so on. Since lifetime for failure and operation significantly depends on degree of right and wrong on construction works, criteria of construction works
described on Instruction manual must be followed.
Part
Refrigerant circuit parts
Compressor
Air-side heat exchanger (Gas
cooler)
Solenoid valve
Electronic expansion valve
Saftty valve
Strainer
Capillary tube
Piping
36 | BC408445719305en-000101
Criteria
Follow the oil check operation shown in
the Instruction manual.
"11 Operation / 11.1 Oil check verification".
Follow the oil check operation shown in
the Instruction manual.
"11 Operation / 11.1 Oil check verification".
Check the setting related to oil return
control of the module controller.
SH Guard ALC_r20:2.0K
SH Start ALC_r21:4.0K
Oil ALC setpoint LBP_r22:-2.0K
Oil ALC setpoint MBP_r26:0.0K
Oil ALC setpoint HBP_r27:3.0K
EEV force low OD after oil recovery_
r25:1min
Yes/No
Did the EEV opening surely expand
during oil return control?
Did the oil return control status change?
Follow the oil check operation shown in
the Instruction manual.
"11 Operation / 11.1 Oil check verification".
High/middle/low pressure, vibration, noise,
insulation resistance, loose terminal
High/middle/low pressure, fouled fin, discharge
temperature
Operation, leak, clogging
Operation
Whether or not there is refrigerant leakage
Strainer out-/inlet temperature
Contact wear, vibration
Contact wear, vibration
Result
Inspection
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
Comment
Cycle
Guide for
(time/year)
replacement
1
40,000 h
1
8 years
1
7 years
1
7 years
1
5 years
1
8 years
1
8 years
1
8 years
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