Startup Of The Unit; Check After Start - Danfoss Optyma Plus Application Manuallines

Application Guidelines

5.6 Startup of the unit

5.7 Check after start

30
FRCC.PC.044.A6.02
System design recommendations
After below steps are completed:
1) System is completely installed.
2) All electrical connections are done.
3) System is charged.
Next steps are needed to start the unit:
The controller of the condensing unit is set for
R449A. If this factory setting of refrigerant as well
as other factory settings of parameters fits for the
requirement of your application, no controller
parameter must be changed.
• For a refrigerant change go into the parameter
menu (press upper button 5 seconds).
• Select parameter "r12" (software main switch)
with a short press on lower button.
• Activate parameter "r12" with middle button and
change the value to 0 (zero).
• Confirm the value with a short press on the
middle button (the 3 LED's start flashing).
• Go to the parameter "o30" (Refrigerant).
• Change the value of parameter "o30" to 21 if
R407A, 37 if R407F will be used.
• Confirm the value with a short press on the
middle button.
Press short the upper (or lower) button to go to
the next Parameter of the Parameter menu, e.g.
Parameter r23 for suction pressure setpoint or r82
After a couple of hours of stable operation
following has to be checked via service
parameters U :
1. Unit current consumption.
2. Rotation of fan (suction through condenser).
3. Check for leakages in refrigerant system.
for Min Condensing Pressure. Scroll fast through
the Parameters with a long press on these buttons.
• Press short the middle button to show the value
of the selected Parameter.
• Press afterwards the upper (or lower) button to
change the value of the selected parameter. A
long press on these buttons will change the value
fast
• Select parameter "r12" again.
• Change the value to 1 (one).
• Confirm the value with a short press on the
middle button (the 3 LED-signs stop flashing and
the condensing unit will start if required).
• After 20 seconds the display returns to the
evaporation temperature in °C, the new refrigerant
and all relevant parameters are changed.
It is compulsory to energize crankcase and oil
separator heaters at least 1 hour before initial
start-up and start-up after prolonged shutdown
to remove refrigerant in liquid phase from the
compressor.
Condensing unit is factory preset for quick
installation and start up. Compressor drive is
fully managed by condensing unit controller and
therefore all parameters settings should be done
only via condensing unit controller.
4. Check superheat.
5. Check oil level.
6. Check for abnormal noises.
7. Check for abnormal vibrations.
8. Suction and discharge pressures.