Haier AB072MRERA Service Manual page 521

Cutting and Enlarging
Cutting or enlarging pipes should be proceeded
by installation personnel according to the
operating criterion if the tube is too long or flare
opening is broken.
Vacuumizing
Vacuumize from the stop valve of outdoor units with
vacuum pump. Refrigerant sealed in indoor machine
is not allowed to use for vacuumization.
Open All Valves
Open all the valves of outdoor units. [NB: oil balancing
stop valve must be shut up completely when
connected one master unit.]
Checkup for Air Leakage
Check if there is any leakage at the connecting part
and bonnet with hydrophone or soapsuds.
Installing and Dismantling Indoor Unit
1. Installation
During the installation of this series machines,
fasten the wall pad on the wall first, hang the
machine on the pothook, push it towards the wall
pad until the sound of 'pa' 'pa' is heard. At this
time, the agraffes of the indoor unit have hitched
on the pad, as shown in the Fig.1 with dotted line.
2. Dismantling
During dismantling this series machines, push
agraffes at the bottom of indoor unit upwards to
release them, as shown in Fig.3, and pull up the
bottom of indoor unit outwards gently and then
raise the unit upwards in the bevel direction to
release the pothook at the upper part of the wall
pad, as shown in Fig.3.
Connecting
1. Connecting circular terminals:
The connecting method of circular terminal is shown
in the Fig. Take off the screw, connect it to the
terminal tier after heading it through the ring at the
end of the lead and then tighten it.
2. Connecting straight terminals:
The connection methods for the circular terminals are
shown as follows: loosen the screw before putting the
line terminal into the terminal tier, tighten the screw
and confirm it has been clamped by pulling the line
gently.
3. Pressing connecting line
After connecting line is completed, press the
connecting line with clips which should press on the
protective sleeve of the connecting line.
Agraffe
513
Agraffe