Transportation; Refrigerant Pipe Connection; Cautions In Piping Installation - Haier AU042FPERA Service Manual

The unit should be installed at the
place where the cold/hot air or
noise will not interfere the neighbours.
Note:
1. In snowy area, install the unit under the bracket or the snow-proof cover against the accumulative snow on the
unit.
2. Do not install the unit at the place where the flammable gas will leak.
3. Install the unit at the strong enough place.
4. Install the unit at the flat place.
5. When being installed at the place with strong wind, set the air outlet of the unit and the wind direction vertical.
Also fix the unit with the screw.
6. When opening the electric box cover for maintenance, please fix the cover with screw firmly.

(3) Transportation

• In transportation, please don't dismantle the packaging, and move the unit to the installation location as closely
• as possible.
• If the packaging must be dismantled, hang up the unit with rope against damage.
• Don't hang the unit only at two points. When hanging the unit, don't sit on the unit. The unit should be upright.
• When removing the unit with the forklift, put the fork into the special hole at bottom of the unit.
• When being hanged, the rope should be 4 pieces of steel cable with over 6mm diameter.
• Put the cushion at the contact section between steel cable and the unit against the distortion or damage.
A. Refrigerant pipe connection
Pipe connection method:
• To ensure the efficiency, the pipe should be as short as possible.
• Daub the refrigerant oil on the connector and the flare nut.
• When bending the pipe, the bending semi-diameter should be as large
as possible against the pipe being broken or bent.
• When connecting the pipe, aim at the center to thread the nut by hand
and tighten it with the double spanners.
• Don't let the impurity such as sand, water etc into the pipe.

Cautions in piping installation:

• When welding the connector with hard solder, charge nitrogen into the pipe against oxidation. Or the oxygen film
in the pipe will clog the capillary and the expansion valve, even cause the deathly accident.
• The refrigerant pipe should be clean. If the water and the other impurity enter the pipe, charge the nitrogen to
clean the pipe. The nitrogen should flow under the pressure of about 0.5Mpa and when charging the nitrogen,
stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up
the other end).
• The piping installation should be executed after the stop valves are closed.
• Before welding the valve and the pipes, use the wet cloth to cool down the valve and the pipes.
• When the connection pipe and the branch pipe need to be cut down, please use the special shears and cannot
use the saw.
• The place where the water can flow
fluently.
• The place where no other heat
source will affect the unit.
• Pay attention to the snow against
clogging the outdoor.
• In installation, install the anti-
vibration rubber between the unit
and the bracket.
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• The unit is better not be installed
at the below places, or it will cause
damage.
• The place where there is corrosive
gas (spa area etc).
• The place blowing salty air (seaside
etc).
• Exists the strong coal smoke.
• The place with high humidity.
• The place where there is device
emitting Hertzian waves.
• The place where voltage changes
greatly.
When fastening and loosing the nut,
operate with double spanners, because
only one spanner cannot execute firmly.
Spanner
Spanner
If threading the nut as not aiming at
the center, the screw thread will be
damaged, further it will cause leakage.
Connector
Nut