For Inspecting And Repairing The Unit - Honeywell MM14CCS Service Manual

IMPORTANT POINTS ON SERVICE OPERATING SAFETY
Please follow these instructions carefully :
Unplug the unit to avoid any danger from electric shock before disassembling the unit for
repair.
If there is any sound of the refrigerant circulating when in operation, avoid touching the
cooling coils.
If you need to perform any welding or soldering, be sure you are in a well ventilated area.
Only a qualified professional should perform any welding on the unit.
When repairing the unit, the specifications listed in this manual must be strictly adhered
to when replacing any components.
When replacing any electrical components they should be factory approved units.
Be sure that any electrical components are properly wired and in place.
FLOW CHART FOR INSPECTING AND REPAIRING THE UNIT
AIR CONDITIONER
WON'T START
AIR CONDITIONER
COMPRESSOR WON'T
WON'T COOL
START
PROPERLY
USE OXYACETYLENE AND PLUS 5%
SILVER SOLDER TO WELD THE
CRACKED POINTS
RUNNING TEST
POWER TRIPPED
NO POWER
PLUG AND SOCKET
ARE LOOSE
TIMER FAILURE
PROTECTOR FAILURE
CAPACITOR FAILURE
WIRING IS LOOSE
REFRIGERANT
LEAKAGE
TROUBLE SHOOTING
THE SYSTEM
RUNNING THE VACUUM
EVACUATION FOR MORE
THAN 15 MINUTES
CHECK THE POWER
SWITCH
RE-PLUGING THE
POWER SUPPLY CORD
TESTING BY
ELECTROSCOPE
CHANGE THE
PROTECTOR
CHANGE THE
CAPACITOR
RE-CONNECTING
CHANGE THE AIR CONDITIONER WITH 15 KG/CM
NITROGEN GAS FROM LOW-PRESSURE SIDE AND
DETECT THE LEAKING POINT BY SOAP
- 1 -
CHANGE THE SWITCH
CHANGE COOLANT AND
PROCEED RUNNING TEST
2