Panasonic CS/CU-KU12ZKY Series Operating & Installation Instructions Manual page 25

Cutting and Flaring the Piping
1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
3. Please make flare after inserting the flare nut onto the copper pipes.
Pipe
Reamer
Point down
1. To cut 2. To remove burrs
How to take out Front Grille
Please follow the steps below to take out front grille if
necessary such as when servicing.
1. Set the vertical airflow direction louvers to the
horizontal position
2. Remove the 2 caps (1.5 ~ 2.0HP) or 3 caps
(2.0 ~ 2.5HP) on the front grille as shown in
the illustration at top, and then remove the
4 mounting screws.
3. Pull the lower section of the front grille
towards you to remove the front grille.
Auto Switch Operation
The below operations will be performed by pressing the "AUTO" switch.
1. AUTO OPERATION MODE
The Auto operation will be activated immediately once the Auto Switch is pressed and
release before 5 sec..
2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)
The Test Run operation will be activated if the Auto Switch is pressed continuously for
more than 5 sec. to below 8 sec..
A "pep" sound will occur at the fifth sec., in order to identify the starting of Test Run operation.
Check the Drainage
• Open front panel and remove air filters.
(Drainage checking can be carried out without removing the front grille.)
• Pour a glass of water into the drain tray-styrofoam.
• Ensure that water flows out from drain hose of the indoor unit.
Evaluation of the Performance
• Operate the unit at cooling/heating operation mode for fifteen minutes or more.
• Measure the temperature of the intake and discharge air.
• Ensure the difference between the intake temperature and the discharge is
more than 8°C during Cooling operation or more than 14°C during
Heating operation.
Handle
Bar
Yoke
Core
Red arrow mark
Clamp handle
3. To fl are
Inclined Surface
0 – 0.5 mm
Bar
When properly fl ared, the internal surface of the
fl are will evenly shine and be of even thickness.
Copper pipe
Since the fl are part comes into contact with the
connections, carefully check the fl are fi nish.
Improper fl aring
Cracked Uneven
damaged thickness
Drain tray-styrofoam
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