Annual Maintenance; Air Conditioner Operating Conditions; Functions To Be Implemented Locally - Toshiba RAV-GP1101AT8-E Manuel D'installation

11

ANNUAL MAINTENANCE

For an air conditioning system that is operated on a regular basis, cleaning and maintenance of the indoor/outdoor
units are strongly recommended.
As a general rule, if an indoor unit is operated for about 8 hours daily, the indoor/outdoor units will need to be cleaned
at least once every 3 months. This cleaning and maintenance should be carried out by a qualified service person.
Failure to clean the indoor/outdoor units regularly will result in poor performance, icing, water leaking and even
compressor failure.
12

AIR CONDITIONER OPERATING CONDITIONS

For proper performance, operate the air conditioner under the following temperature conditions:
Cooling operation Dry bulb temp.
Heating operation Wet bulb temp.
If air conditioner is used outside of the above conditions, safety protection may work.
13

FUNCTIONS TO BE IMPLEMENTED LOCALLY

Handling Existing Pipe (Refer to 15 APPENDIX)
When using the existing pipe, carefully check for the following:
• Wall thickness (within the specified range)
• Scratches and dents
• Water, oil, dirt, or dust in the pipe
• Flare looseness and leakage from welds
• Deterioration of copper pipe and heat insulator
Cautions for using existing pipe
• Do not reuse a flare nut to prevent gas leaks.
Replace it with the supplied flare nut and then process it to a flare.
• Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean. If discolored oil or much
residue is discharged, wash the pipe.
• Check welds, if any, on the pipe for gas leaks.
When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.
• The pipe has been opened (disconnected from indoor unit or outdoor unit) for a long period.
• The pipe has been connected to an outdoor unit that does not use refrigerant R22, R410A or R407C.
EN-173
–15 °C to 46 °C
–20 °C to 15 °C
- 87 -
• The existing pipe must have a wall thickness equal to or larger than the following thicknesses.
Reference outside
Wall thickness (mm)
diameter (mm)
6.4
9.5
12.7
15.9
• Do not use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.
• When using a Ø19.1 mm gas pipe for the existing piping, set bit 3 of SW802 (switch for existing pipe) on the P.C.
board of the outdoor unit to ON. In this case, the heating performance may be reduced depending on the outside air
temperature and room temperature.
SW802
When shipped from factory When using existing pipe
ON
1 2 3 4
Refrigerant recovery
• Use refrigerant recovery switch SW801 on the P.C. board of the outdoor unit to recover refrigerant when the indoor
or outdoor unit is moved.
• Before recovering the refrigerant in the existing system, perform a cooling operation for at least 30 minutes.
Procedure
1. Turn on the power of the air conditioner.
2. Select the FAN mode for indoor unit operation with the
remote controller.
3. Set SW804 on the P.C. board of the outdoor unit to all
OFF, and then press SW801 for 1 second or more.
The air conditioner enters the forced cooling mode for
up to 10 minutes.
Operate or handle the valve to recover refrigerant
during this time period.
4. Upon completion of refrigerant recovery, close the
valve and press SW801 for at least 1 second to stop
operation.
5. Turn off the power.
DANGER
Be careful of electric shock because the P.C. board has an electrical current running through it.
Material
0.8 –
0.8 –
0.8 –
1.0 –
ON
1 2 3 4
ON
1
SW804
ON
1
SW802
Existing
pipe switch
SW802
ON
2 3 4 1 2 3 4
SW805
ON
2 3 4 1 2 3 4
SW803 SW800 SW801 SW806
Refrigerant
recovery
switch SW801
EN-174