TK 56430-18-IP-EN
95
Table 9.
Solenoid Valve Positions
Solenoid Valves
Model
Liquid
Injection
(LIV)*
Liquid Line
(PS3)
Liquid Line 2
(PS2)
Defrost 1
(PS1)
Defrost 2
(PS4)
CPR Bypass
(PS8)
Condenser
Blocking
V-200/V-300
10
N/C
–
–
N/C
–
–
–
V-200/V-300
20
N/C
–
–
N/C
–
–
–
V-520 NM 10
N/C
–
–
N/C
–
–
–
V-520 NM 20
N/C
–
–
N/C
–
–
–
V-520 NM 30
N/C
–
–
N/C
–
–
N/O
V-520 NM 50
N/C
–
–
N/C
–
–
N/O
V-520 NM
Spectrum 10
N/C
N/C
N/C
N/C
N/C
N/O
–
V-520 NM
Spectrum 20
N/C
N/C
N/C
N/C
N/C
N/O
–
V-520 NM
Spectrum 50
N/C
N/C
N/C
N/C
N/C
N/O
–
V-520 RT 10
N/C
–
–
N/C
–
–
–
V-520 RT 20
N/C
–
–
N/C
–
–
–
V-520 RT 30
N/C
–
–
N/C
–
–
N/O
V-520 RT 50
N/C
–
–
N/C
–
–
N/O
V-520 RT
Spectrum 50
N/C
N/C
N/C
N/C
N/C
N/O
N/O
V-800 10
N/C
–
–
N/C
–
–
–
V-800 20
N/C
–
–
N/C
–
–
–
VM-405 Max
EL
–
–
–
N/C
–
–
–
VM-405 PBBD2
–
–
–
N/C
–
–
–
* MAX and all V-520 Nosemount Units Only
N/C = Normally Closed
N/O = Normally Open
Open the gauge manifold and vacuum pump valves. Start the vacuum pump and pump the system down until the
micron gauge reads
500 microns
. Continue to pump down the system for an additional one hour after the system
reached 500 microns.
N
No
otte
e:: If the system will not pump down to 500 microns there is likely a leak in the system or evacuation hoses.
3. Once the system has reached 500 microns for one hour close the vacuum pump valve and turn off the vacuum
pump. Monitor the micron gauge for 5 minutes.
•
Micron gauge REMAINS BELOW 2000 microns proceed to Step 5.
•
Micron gauge RAISES ABOVE 2000 microns proceed to Step 4.
4. If the system pressure rose above 2000 microns in 5 minutes the system may require additional evacuation or a leak
is present.
•
A SLOW RISE in system pressure likely indicates the system requires additional evacuation due to the presence
of moisture in the system. Repeat Steps 2 and 3.
•
A RAPID RISE in system pressure likely indicates a leak in the system or evacuation hoses. Properly leak check
the system, repair the leak and repeat Steps 2 and 3.
