Toshiba RAS-M07G3DV-E Service Manual page 66

1
Remove the drain pump connector CN504.
* For gravitational drainage, remove the white connector (CN504) on the P.C. board in the electrical control box.
2
Move the plug to the upper pipe from the lower pipe on the side that will be used.
3
Insert the flexible drain hose into the lower drain pipe and fix it with the hose band.
Drain up
When a down-gradient cannot be secured for the drain pipe, drain-up piping is possible.
• The height of the drain pipe must be 350 mm or less from the underside of the indoor unit.
• Take the drain pipe out of the drain pipe joint with the indoor unit in 300 mm or less, and bend up the pipe
vertically.
• Immediately after the pipe is bent up vertically, lay the pipe making a down-gradient.
Check the draining
In the test run, check that water drain is properly performed and water does not leak from the connecting part of the
pipes. When doing this, also check that no abnormal sounds are heard from the drain pump motor. Check draining also when installed in heating period.
When the electrical and wiring work has been completed
Pour some water by following the method shown in the following figure. Then, while performing a cooling operation, check that the water drains from the drain pipe
connecting port (transparent) and that no water is leaking from the drain pipe.
When the electrical and wiring work has not been completed
• Disconnect the float switch connector (3P: red) from the connector (CN34: red) on the P.C. board inside the electrical control box. (Before doing this, the power
must be turned off.)
• Connect a 220 V to 240 V supply voltage to (1) and (2) on the power supply terminal block. (Do not apply a 220 V to 240 V voltage to (A), (B) of the terminal
block. Otherwise, the printed circuit board may be damaged.)
• Pour the water by following the method shown in the following figure. (Amount of water poured: 1500 cc to 2000 cc)
• When the power is turned on, the drain pump automatically starts running. Check whether the water is draining from the drain pipe connecting port, and check
that no water is leaking from the drain pipe.
• After checking that the water drains and there are no water leaks, turn off the power, connect the float switch connector to its original location (CN34) on the P.C.
board, and return the electrical control box to its original position.
Black
Black
Pull out connector CN34
(Red) from P.C. board.
220 V to 240 V
White
Black
Access panel
– 65 –
CN504
White
Hose band
Flexible
drain hose
For drain pipes that will be
connected after setup, make a
downward slope of 1/100 or more.
Flexible drain hose
(Accessory)
300 or less
Drain up setup dimensions
Supply water hose
Lower pipe