JAVAC XTR-PRO-DV - Cooling the Recovery Cylinder

15
14
EN
5.0 SET UP AND OPERATION continued
5.5 COOLING THE RECOVERY CYLINDER
5.5.1 The recovery unit can be used to PRE-cool (or SUB-cool) the recovery cylinder if the head
pressure is too high to complete the recovery process. This can occur when working with certain
refrigerants with a high vapour pressure in high ambient temperatures.
5.5.2 If the recovery process stalls out because of high head pressure, stop the recovery unit, shut
o the hose valves and recongure the setup as shown below. This can also be done before starting
the recovery process but it may have marginal long term eect. NOTE: This will only work if there is at
least 5 Kg of liquid in the recovery cylinder to develop the necessary pressure dierential required.
5.5.3 POWER ON the recovery unit and ROTATE the DISCHARGE Valve (V3) to achieve a pressure
dierential of at least 700 Kpa between the LP Gauge and the HP Gauge. KEEP THE HP BELOW
2500 Kpa on the HP Gauge to ensure that the HP Cut-O Switch will not actuate.
5.5.4 After several minutes of running, the cylinder will be cold. POWER OFF the recovery unit and
recongure the setup for NORMAL RECOVERY. Repeat as needed.
SET-UP PROCEDURE FOR SUB-COOLING METHOD
RECOVERY UNIT
POWER
SOURCE
OPTIONAL
CONNECTION
TO SYSTEM
CYLINDER
WITH
CT-OFD
SCALE
VAPOUR LIQUID
RECOVERY UNIT
VAPOUR
VAPOUR
LIQUID
SYSTEM
POWER
SOURCE
FILTER
CYLINDER
WITH
CT-OFD
SCALE
LIQUID
RECOVERY UNIT
LIQUID
CYLINDER
SCALE
POWER
SOURCE
RECOVERY UNIT
VAPOUR
LIQUID
LIQUID
SYSTEM
CYLINDER
WITH
CT-OFD
SCALE
POWER
SOURCE
FILTER
VALVE POSITIONS FOR PUSH/PULL METHOD
V2
L
I
Q
U
I
D
OPEN CLOSEPURGE
PURGE RECOVER
OPEN
V3
V1
VALVE POSITIONS DURING PURGE OPERATION
V2
L
I
Q
U
I
D
V1
CLOSE
OPEN
CLOSEPURGE
PURGERECOVER
OPEN
V3
VALVE POSITIONS DURING SUB-COOLING METHOD
V2
L
I
Q
U
I
D
V1
CLOSE
OPEN
CLOSEPURGE
PURGE RECOVER
OPEN
V3
VALVE POSITIONS DURING NORMAL RECOVERY
V2
L
I
Q
U
I
D
V1
CLOSE
OPEN
CLOSEPURGE
PURGERECOVER
OPEN
V3
RECOVERY UNIT
POWER
SOURCE
OPTIONAL
CONNECTION
TO SYSTEM
CYLINDER
WITH
CT-OFD
SCALE
VAPOUR LIQUID
RECOVERY UNIT
VAPOUR
VAPOUR
LIQUID
SYSTEM
POWER
SOURCE
FILTER
CYLINDER
WITH
CT-OFD
SCALE
LIQUID
RECOVERY UNIT
LIQUID
CYLINDER
SCALE
POWER
SOURCE
RECOVERY UNIT
VAPOUR
LIQUID
LIQUID
SYSTEM
CYLINDER
WITH
CT-OFD
SCALE
POWER
SOURCE
FILTER
VALVE POSITIONS FOR PUSH/PULL METHOD
V2
L
I
Q
U
I
D
OPEN CLOSEPURGE
PURGE RECOVER
OPEN
V3
V1
VALVE POSITIONS DURING PURGE OPERATION
V2
L
I
Q
U
I
D
V1
CLOSE
OPEN
CLOSEPURGE
PURGERECOVER
OPEN
V3
VALVE POSITIONS DURING SUB-COOLING METHOD
V2
L
I
Q
U
I
D
V1
CLOSE
OPEN
CLOSEPURGE
PURGE RECOVER
OPEN
V3
VALVE POSITIONS DURING NORMAL RECOVERY
V2
L
I
Q
U
I
D
V1
CLOSE
OPEN
CLOSEPURGE
PURGERECOVER
OPEN
V3
XTRC2A2L-JAV-1059-PRO-DV-safe-op-manual-A5-180pp.indd 14 10/01/2018 12:29