Pump Down Operation Switch - Daikin FTX25JVEA9 Service Manual

Operating Test
1.3

Pump Down Operation Switch

1. Close the liquid side stop valve of outdoor unit.
2. Pump down
PUMP DOWN OPERATION SWITCH [SW4]
Press the PUMP DOWN OPERATION SWITCH [SW4]
PUMP DOWN OPERATION STOPS when LP (Low Pressure)
COMES TO
<CAUTIONS>
1) If the LP is
2) If the LP fails to drop below the specified level within the specified time during pump down
operation,
are long and cold.) Repeat the pump down operation.
<CAUTIONS>
After all indoor units have stopped, PUMP DOWN is performed for the next operation.
[Approx.
3. Close the gas side stop valve of outdoor unit after completion of pump down procedure.
4. After completion of repair works for site piping, BP units or indoor units, make sure to open
210
0.5kg/cm 2 , or automatically in about
1kg/cm 2 or less, the LP display blinks.
appears in the display. (This means that the outside air is low and the pipes
5 minutes ]
gas and liquid side stop valves.
Digital display:
After "Pd_" Blinks in the
8 minutes .
digital display, the LP
(Low Pressure) indicator
activates.
Si18-201
" "
(Q0002)
Operating Test