Charge Of Condensing Unit Oil; Calculation Of The Charge Quantity Of Condensing Unit Oil - Danfoss Optyma OP-UPAC015COP04E Application Manuallines

Application Guidelines

5.3 Charge of condensing unit oil

• On the way of vacuuming, refill condensing unit oil from the service port.
• When the unit is not energized, remove coils from the hot gas bypass solenoid valve and oil return solenoid valve, and open the solenoid
valve forcibly using a special magnet.
• When the unit is energized, turn off the unit's power supply, turn the dip switch SW5-7 to ON (Up), and turn the power ON. The electronic
expansion valve and solenoid valve in the unit open. Make sure to turn SW5-7 to OFF (Down) when the work is over. The vacuum pump
is connected to the service port at the low pressure side only at that time.
• In the event that the pipe is long or there is an oil sump in the evaporator, the condensing unit oil retained in the compressor becomes
insufficient. Charge additional condensing unit oil according to 5.4 Calculation of the charge quantity of condensing unit oil.
• After charging the additional oil, confirm that 7-segment display "C32 (Level switch)" indicates "1 (With oil)". When the oil is
insufficient, it indicates "0". (After stopping the freezing operation, for example, the oil level may turn to "0" temporarily because
of the pressure difference in the compressor. If it indicates "0" continually while the compressor is running, refill additional oil.)
When the left 3 of 7-segment shows C32, the third digit from the right indicates the OLS1-2 status.
• If the condensing unit oil becomes insufficient during operation, tripping OLS1-2, the oil level alarm "oPE88-1" or oil level error "E88-1"
is indicated on 7-segment display. (Dip switch SW6-5 OFF is for Alarm or ON for Error.) When the alarm or error occurs, refill additional
condensing unit oil.
• Time of oil level low with OLS1-2 during compressor running can be summed and checked with 7-segment display "C42", which displays
"Accumulated time of CM1 ON and OLS1-2 OFF"

5.4 Calculation of the charge quantity of condensing unit oil

Use the following equation.
Condensing unit oil quantity (cc) = Standard condensing unit oil quantity*1 (cm3) + Piping condensing unit oil quantity *2 (cc)
As to the standard condensing unit oil quantity of condensing unit and piping condensing unit oil quantity for the above equation, refer
to 1 and 2.
Since the standard condensing unit oil of 1 is charged at the shipment from factory, calculate the charge quantity of oil from the piping
condensing unit oil of 1.
1. Standard condensing unit oil quantity of condensing unit (Charged at the shipment from factory.)
Condensing unit oil initial charge quantity
34
AB408540130380en-000102
5. System design recommendations
Diamond Freeze MA68
1,830cc
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