User Guide | Optyma™ iCO2
36 | BC408445719305en-000101
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
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: / /
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
Inspection
Cycle
(time/year)
Guide for
replacement
Refrigerant circuit parts
Compressor
High/middle/low pressure, vibration, noise,
insulation resistance, loose terminal
1
40,000 h
Air-side heat exchanger (Gas
cooler)
High/middle/low pressure, fouled fin, discharge
temperature
1
8 years
Solenoid valve
Operation, leak, clogging
1
7 years
Electronic expansion valve
Operation
1
7 years
Saftty valve
Whether or not there is refrigerant leakage
1
5 years
Strainer
Strainer out-/inlet temperature
1
8 years
Capillary tube
Contact wear, vibration
1
8 years
Piping
Contact wear, vibration
1
8 years
Criteria
Result
Comment
9. Test run (Refrigerant oil check operation)
9.01
Confirm oil check operation without
"OIL-Lo" indication on 7 segment display
Follow the oil check operation shown in
the Instruction manual.
"11 Operation / 11.1 Oil check verification".
9.02
Record the "Operation data check sheet"
during oil check operation.
Follow the oil check operation shown in
the Instruction manual.
"11 Operation / 11.1 Oil check verification".
10. Test run (Oil return operation)
10.01
Did you execute the oil return control?
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
10.02
Does the oil return control start when
the external input "CNS3" is connected?
Yes/No
10.03
Did you write down the "Operation data
check sheet" during oil return control.
Did the EEV opening surely expand
during oil return control?
Did the oil return control status change?
11. Operation check of alarm
11.01
Disconnect the sensor to confirm if the
alarm is working.
Follow the oil check operation shown in
the Instruction manual.
"11 Operation / 11.1 Oil check verification".