Mitsubishi SCM40ZJ-S Service Manual page 185

illustration, hold the panel at both ends of lower
part, lower it downward slowly, then push it
slightly until the latch works.
ELECTRICAL WIRING WORK
Preparation of indoor unit
In case of faulty wiring connection, the indoor unit stops, and
then the run lamp turns on and the timer lamp blinks.
Mounting of connecting wires
1 Open the air inlet panel. Use cables for interconnection wiring to avoid loosening of the
2 Remove the lid.
wires.
3 Remove the wiring clamp. CENELEC code for cables Required field cables.
4 Connect the connecting wire securely to the terminal block.
1) Connect the connection wire securely to the terminal H05RNR4G1.5 (example) or 245IEC57
block. If the wire is not affixed completely, contact will be
05
poor, and it is dangerous as the terminal block may heat
up and catch fire.
2) Take care not to confuse the terminal numbers for indoor
and outdoor connections.
4or5 Number of conductors
5 Fix the connecting wire by wiring clamp.
6 Attach the lid.
7 Close the air inlet panel.
1.5
INSTALLATION OF WIRELESS CONTROL
Mounting method of battery
Uncover the wireless remote control, and mount the batteries
[R03 (AAA, Micro), 2 pieces] in the body regularly.
(Fit the poles with the indication marks, & without fail)
CAUTION
6 Battery
Do not use new and
old batteries together.
Cover
HOW TO RELOCATE OR DISPOSE OF THE UNIT
In order to protect the environment, be sure to pump down (recovery of refrigerant).
Pump down is the method of recovering refrigerant from the indoor unit to the
outdoor unit when the pipes are removed from the unit.
<How to pump down>
1 Connect charge hose to check joint of outdoor unit.
2 Liquid side : Close the liquid valve with hexagon wrench key.
Gas side : Fully open the gas valve.
Carry out cooling operation. (If indoor temperature is low, operate
forced cooling operation.)
3 After low pressure gauge become 0.01MPa, stop cooling operation
and close the gas valve.
CAUTION
H Harmonized cable type
300/500 volts
R Natural-and/or synth, rubber wire insulation
N Polychloroprene rubber conductors insulation
R Stranded core
G One conductor of the cable is the earth conductor
(yellow/green)
Section of copper wire (mm )
2
Fixing to pillar or wall
Conventionally, operate the wireless remote control by holding
in your hand.
Avoid installing it on a clay wall etc.
2 Wireless remote control
5 Wood screws
ø3.5 X 16
• Forced cooling operation
Turn on a power supply again after a while after turn off a power supply.
Then press continually the ON/OFF button 5 seconds or more.
Unit ON/OFF button
Tighten the screw (A) 2pcs / screw
(B) 3pcs to fix the front panel.
Install the air filter.
Install the air inlet panel.
Screw (B)
Terminal block
The screw of the lid is
tightened securely.
Lid
1 2 N 3
Wiring Clamp
INSTALLATION TEST CHECK POINTS
Check the following points again after completion of the installation, and before turning on the power. Conduct a test run again and ensure that the unit operates properly.
At the same time, explain to the customer how to use the unit and how to take care of the unit following the user's manual.
After installation
The power supply voltage is correct as the rating.
No gas leaks from the joints of the operation valve.
Power cables and crossover wires are securely fixed to the terminal board.
The screw of the lid is tightened securely.
Operation valve is fully open.
The pipe joints for indoor and outdoor pipes have been insulated.
Test run
Air conditioning operation is normal.
No abnormal noise.
Water drains smoothly.
Protective functions are not working.
The remote control is normal.
CONCERNING TERMINAL CONNECTION FOR AN INTERFACE
1 Remove the air inlet panel, lid and front panel.
2 Remove the control cover. (Remove the screw.)
3 There is a terminal (respectively marked with CNS) for the indoor control board.
In connecting an interface, connect to the respective terminal securely with the connection harness
supplied with an optional " Interface connection kit SC-BIKN-E" and fasten the connection harness
onto the indoor control box with the clamp supplied with the kit.
For more details, please refer to the user's manual of your " Interface connection kit SC-BIKN-E".
Front panel
Screw (A)
Screw (A)
Screw (B)
Screw (B)
Installing the air-cleaning filters
1. Open the air inlet panel and remove the air filters.
2. Install the filter holders, with the air-cleaning filters installed in the holders.
In the air conditioner.
• Each air-cleaning filter can be installed in the left or right filter holder.
3. Install the air filters and close the inlet panel.
Air-cleaning
filter
Filter holder
Operation of the unit has been explained to the customer.
(Three-minutes restart preventive timer)
When the air conditioner is restarted or when changing the operation, the unit
will not start operating for approximately 3 minutes.
This is to protect the unit and it is not a malfunction.
Control cover
Indoor unit PCB
Screw
CNS terminal