Refrigerant Pump Down - Daikin FTXJ-M Service Manual

ESIE16-02K | Part 3. Repair
1. Vacuum pump
I
NFORMATION
See instruction of the recovery pump supplier how to recover the refrigerant.

3.1.3. Refrigerant pump down

To protect the environment, make sure to perform the following pump down operation when relocating the unit.
W : R
ARNING
• When the refrigeration circuit has a leak, do not execute pump down with the compressor.
• Use recovery system into separate cylinder.
• Warning, explosive hazard exists when executing pump down.
• Pump down with compressor can lead to self-combustion due to air entering during pump down.
I
NFORMATION
Some outdoor units are equipped with a low pressure switch to protect the compressor by switching it off.
Never short-circuit the low pressure switch during pump down operation!
1. Remove the valve lid from liquid stop valve and gas stop valve.
2. Carry out pump down operation.
C
AUTION
Refer to Installer Reference Guide for 'Pump down operation' procedure.
3. After 5-10 min (after only 1-2 min in case of very low Ta < -10°C), close the liquid stop valve with a hexagonal wrench.
4. Check on manifold if vacuum is reached, close gas stop valve and forced cooling operation.
31/05/21 | Version 1.1
RA R32 Split & multi split M-Series
Figure 3-2: 2 service ports at stop valves
ISK OF EXPLOSION
3.1. Refrigerant repair procedures
2. To recovery pump
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