Safety When Performing Service Work; Equipment And Materials Required For Service Work - Mitsubishi Electric AE-200A Service Handbook

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[II Be sure to read before performing service work]

[1] Safety when performing service work

Be sure to carefully read "Safety Precautions" at the beginning of this manual and perform service work while
paying attention to safety.
To ensure inspection and replacement work is performed safely, observe the following precautions when performing the work.
1.
Turn off the
breakers
2.
Take electrical
shock precautions
3.
Use appropriate
tools
4.
Ground
5.
Clean

[2] Equipment and materials required for service work

Prepare the following equipment and materials for the service work. (Note: Prepare the items that will be required for the particular
site.)
<Tools>
Screwdriver
Hex key
<Measuring instruments>
Tester
Oscilloscope
<Reference materials>
Diagram of air conditioning control system at the site
AE-200/AE-50 Installation and Instructions Manual
EW-50 Installation and Instructions Manual
AE-200/AE-50/EW-50 Web Browser Instruction Book (Administration and Initial Settings)
Instruction Manual and Installation Manual for each air-conditioning unit, controller, and power supply unit
Service Handbook (this manual)
Air-conditioning Unit Service Handbook
Air-conditioning Unit Service Parts Catalog
<Other items>
License numbers
USB memory device
PC
LAN cable
Before replacing parts, be sure to turn off the breaker in the control panel and the main breaker outside the
control panel to shut off the power supply to the AE-200/AE-50/EW-50.
If inspection work must be performed while the equipment is energized, do not touch live parts and take
sufficient precautions against electric shock.
Use appropriate tools for inspection and replacement work.
Using worn out tools may result in an accident due to inadequate tightening, contact failure, etc.
Be sure to ground the equipment. Furthermore, inspect the grounding state and perform the work again if
the grounding is inadequate.
After performing the inspection and replacement work, clean the equipment and the area around the
equipment and then notify the customer that the inspection and replacement work is complete.
Used to remove the front cover of the AE-200/AE-50.
Width across flats: 2.5 mm (0.1 in)
A hex key is included with the AE-200/AE-50.
Used to check the wiring and voltage.
Used to check the M-NET transmission waveform.
License numbers of AE-200/AE-50/EW-50 required for the functions to be used
(Required when new installation, replacement, etc.)
Used to back up the initial settings data.
(Use a USB memory device specified in "III [9] (2) About USB memory devices.")
Used for various tools and Web display.
100BASE-TX compatible LAN cable (category 5 or better)
4

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