User Guide
7
IMPORTANT! If recovering Class A2, A2L, or A3 refrigerants, read ADDITIONAL SAFETY
INSTRUCTIONS ON PAGE 3 OF THIS MANUAL.
TO MINIMIZE RECOVERY TIME:
A. Use shortest length 3/8” (Inside Diameter) Refrigeration Hose on Suction Side of Recovery Unit to
Vapor Port on Tank.
B. Use 3/8” (Inside Diameter) Refrigerant Hoses from system Liquid Service Valve to LIQUID Port on
Recovery Tank.
C. Use an evacuated DOT Tank (90lb or larger, and rated for 550 PSI/38 Bar).
D. If refrigerant is clean, remove all suction side filters, screens, etc.
E. Remove all Schrader type valve cores and any valve depressors from hoses and service valves.
CONNECT RECOVERY UNIT (See Diagram 3)
• Use a Refrigerant Manifold (with sight glass) and two spare hoses.
• Connect Ground Strap between Recovery Unit and Recovery Tank (to prevent static electricity build up)
1.
Connect Manifold
between Liquid Port on A/C or Refrigeration Unit being serviced and DOT
Recovery Tank LIQUID Valve
.
2. Connect Refrigerant Hose from Recovery Unit
IN
port to evacuated DOT Recovery Tank
VAPOR
Valve.
3. Connect another Refrigerant Hose from Recovery Unit
OUT
Port to
VAPOR Port
of unit being
serviced.
4.
CLOSE
Manifold
LOW Side Valve
.
5.
OPEN
Manifold
HIGH Side Valve
.
6.
OPEN LIQUID Valve
on DOT Recovery Tank.
7. On Recovery Unit, set
Main Power Switch
to
ON
.
8.
OPEN VAPOR Valve
on DOT Recovery Tank. A Push-Pull Flow is now enabled.
9.
MONITOR Charging Scale
for DOT Recovery Tank Capacity.
10.
MONITOR Sight Glass
in manifold for presence of liquid refrigerant.
11. When liquid refrigerant no longer being pushed out of Refrigeration System being recovered, CLOSE
Vapor Valve on DOT Recovery Tank.
12. Let Recovery Unit run for 30 seconds, then turn Recovery unit
OFF
.
13. Note: Push-Pull recovery does completely recover all refrigerant. Proceed to Direct Vapor Recovery
(Page 5) to complete the recovery process.
PUSH-PULL LIQUID RECOVERY
Optional Tank Overfill Sensor Cord
From Tank Vapor Valve To IN Port
Refrigerant
Manifold Set
High Capacity Charging Scale
Optional Tank
Overfill Switch
DOT Recovery
Tank
Refrigerant
Recovery Unit
A/C System
Being Serviced
From Liquid Port To Manifold
Ground Strap*
To Tank
Liquid Valve
IN
OUT
LIQUID
VAPOR
Diagram 3 - Push-Pull Liquid Recovery
* Must be bare metal to bare metal contact.