Pump-D Pump-Down Own Operat Operation Ion - Samsung MXJ-YA1509 Series Installation Manual

11. Pump-Down Operation 11. Pump-Down Operation
1) General Instructions 1) General Instructions
(1) Pump-down operation is to gather the refrigerant into outdoor unit. (1) Pump-down operation is to gather the refrigerant into outdoor unit.
(2) If system is under extremely low pressure, compressor will be damaged. When low pressure go (2) If system is under extremely low pressure, compressor will be damaged. When low pressure go
down 2kgf/ ㎠ ㎠ or below, down 2kgf/
2) Procedure of Pump down operation 2) Procedure of Pump
Close Liquid SVC Valve Close Liquid SVC
Press "K2" button 3 times Press "K2" button 3 times
for pump down operation for pump down operation
Push "K4" button 4 times for Push "K4" button 4 times for
checking low pressure *1) checking low pressure *1)
Press "K2" button 2 times Press "K2" button 2 times
for the end of pump down operation for the end of pump down operation
or below, close the service valve qu close the service valve quickly.
down operation
Single Installation Single Installation
Valve
Comp. On Comp. On
If low pressure ≤ ≤
If low pressure
㎠ ㎠
2kgf/ 2kgf/
Close Gas SVC Close Gas SVC Valve Valve
(of Main Unit) (of Main Unit)
or "K3" button 1 time or "K3" button 1 time
132 132
ickly.
Group Installation Group Installation
o o s s e e a a s s
Press "K2" button 3 times Press "K2" button 3 times
for pump down operation for pump down operation
Wait 20~30minutes Wait 20~30minutes
Close Liquid SVC Valve of Sub Unit Close Liquid SVC Valve of Sub Unit
Close Liquid SVC Valve of Main Unit Close Liquid SVC Valve of Main Unit
*1) "40 32" *1) "40 32"
- "4" means low pressure view mode - "4" means low pressure view mode
- "0 32" means low pressure is 3.2kgf/ - "0 32" means low pressure is 3.2kgf/
Installation guide Installation guide
a a v v e e o o u u n n
Comp. On Comp. On
㎠ ㎠
g g