Leak Test; Tidy Up The Tubing; Test Run - Hisense DC Inverter Unitary Series Use And Installation Instructions

9.2 Leak Test

Leak test all joints and valves of the indoor unit and
outdoor unit with liquid soap. Checking of the orifice
cap shouldn't be less than 30 seconds. Clean the
liquid soap after the test in case that the color of
the copper tube may change for erode.

9.3 Tidy Up the Tubing

If the leak test turns out to be all right, preserve heat
the joints of the indoor unit.
Straighten the connecting tubes and make them
flush and fixed to the wall. Seal the space around the
hole in the wall through which the tubes come out
with gypsum.

9.4 Test Run

The trial should be carried out according to the
installation and maintenance manual.
WARNING
·
Only after all the checking points have been checked
the unit can be operated.
(A) Check and make sure that the resistance of the
terminal to ground is more than 2M , otherwise, you
cannot operate the unit before the electricity leakage
point is found and repaired.
(B) Check and make sure that the stop valve has been
opened before operating the unit.
Make sure the power and unit run well then plug in.
Turn on the appliance and adjust it to Cooling,
dehumidifying and Heating mode according to the
room temperature. Check if the appliance can run
well.
Installation of the appliance is generally finished after
the above operations are done. If you still have any
trouble, please contact local technical service center
of our company for further information.
Fig.8.1
Tube
Reamer
Ω
Fig.8.2
After
Before
Installation and Maintenance
Fig.8.3
Flarer
Fig.8.4
Apply refrigerant lubricant here and there
Fig.8.7
Fig.9.1
Bonnet of service valve
Fig.9.2
Indoor unit
Outdoor unit
Pressure
gauge
Manifold
valve
Vacuum pump
15
Fig.8.5
Tapered nuts
Tube
Fig.8.6
Clamp
Insulated tubes
Narrow tube
Hex wrench
Wide tube
Bonnet of wide valve
Bonnet of narrow valve
Service valve
Union Flare nut
Insulation