User Guide

5
CONNECT RECOVERY UNIT (See Diagram 1)
• 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. Use a refrigerant manifold (with sight glass) and one spare hose.
2. Connect Manifold between A/C or Refrigeration Unit being serviced and Recovery Unit IN port.
3. Connect Refrigerant Hose from Recovery unit OUT port to evacuated DOT Recovery Tank
VAPOR Valve.
4. OPEN VAPOR Valve on DOT Recovery Tank.
5. Keep Manifold Valves CLOSED at this time.
6. On Recovery Unit, set Main Power Switch to ON.
7. When Recovery Unit starts, OPEN both HIGH & LOW Manifold Valves to start refrigerant
recovery flow.
Note: Recovery Unit is designed to directly recover large amounts of liquid refrigerant. During
Vapor Recovery, if compressor makes slugging or hammering noise, meter incoming liquid
refrigerant by closing LOW Side Manifold Valve until noise subsides.
8. Recovery Unit will run continuously. When desired vacuum level is observed on LOW Side
Manifold Gauge, close both LOW & HIGH Side Manifold Valves.
CAUTION: For Class A2, A2L and A3 recovery, Recovery Unit must be turned off when 0 Psig
to prevent possible ingestion of air during recovery process.
9. If Pressure on HIGH Side Manifold Gauge starts to rise, repeat steps 6-8.
10. If HIGH Side Manifold Gauge remains in a vacuum, close all tank, manifold and hose valves.
11. Remove discharge hose from Recovery Unit OUT Port. Recovery and Self-Clearing are now
complete.
DIRECT VAPOR OR LIQUID RECOVERY
From A/C System
being serviced
To inlet port of
recovery unit
IN
OUT
TRS21
Refrigerant
Recovery
Unit
Optional Tank Overfill Sensor Cord
From outlet port of
recovery unit
to recovery tank
Optional tank
overfill switch
DOT Recovery
Tank
High Capacity Charging Scale
Ground
Strap*
From A/C System
Being Serviced
To IN Port On
Recovery Unit
IN
Refrigerant
Recovery
Unit
Optional Tank Overfill Sensor Cord
From OUT Port
To Tank Vapor
Valve
Optional Tank
Overfill Switch
DOT Recovery
Tank
High Capacity Charging Scale
OUT
Refrigerant
Manifold Set
LIQUID
VAPOR
Diagram 1 - Direct Vapor Or Liquid Recovery
* Must be bare metal to bare metal contact.