5
DIRECT VAPOR OR LIQUID RECOVERY
The following is recommended to maximize recovery rates;
A. Use the shortest length of 3/8” ID refrigeration hose on the suction side of the unit.
B. If the refrigerant is clean, remove all suction side filters, screens, etc...
C. Remove all Schrader type valve cores and any valve depressors from the hoses and service valves.
D. Use an evacuated DOT tank.
E. If the unit trips off on High Pressure, change the recovery cylinder.
F. When recovering large amounts of R410a or if recovering under very high ambient temperatures, we
suggest our accessory the MT69 Molecular Transformator.
1. Connect the unit as shown in Diagram - 1. The technician will need to use a refriger-
ant manifold and one spare hose. The manifold should be connected between the unit
being serviced and the TR19 IN port. The spare hose should connect from the TR19
OUT port to an evacuated DOT recovery tank vapor valve. Note: The recovery tank
must be rated for (38 bar) 550 PSI.
2. Open the vapor valve on the DOT recovery tank.
3. Keep the manifold valves closed at this time.
4. Push the main power switch “ON”.
5. Once unit has started, open both HI & LO manifold valves to start the refrigerant
recovery flow.
Note: The TR19 is designed to directly recover large amounts of liquid refrigerant. If during vapor
recovery process the compressor begins to make a slugging or hammering noise, meter the incoming
liquid refrigerant by closing the low side manifold valve until the noise subsides.
6. The TR19 will run continuously. When a 10” hg. vacuum is observed on the low side
manifold gauge, close both the LO & HI side manifold valves off.
7. If the pressure on the HI side manifold gauge starts to rise, repeat steps 4-6. If HI side
manifold gauge remains in a vacuum, close all tank, manifold and hose valves. Remove
discharge hose from TR19 outlet port. Recovery and Self-Clearing are now complete.
Diagram 1 - Direct Vapor Or Liquid Recovery
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