Recovery Mode; Purge Mode - NAVAC MASTER Series User Manual

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- -
OPERATING INSTRUCTION

2). Recovery mode

Vapor valve
Liquid valve
c ap;enl
l o�n(6)
r::::;::===�-
Vapor valve
Refrigerant
equipment
Use NVR1 valve core removal for faster recovery speed.
Ready for operation
Connect the hoses correctly and firmly.
( Please refer to the connection diagram)
Make sure all valves are closed.
1.Switch off the power of refrigerant equipment.
2.0pen the vapor and liquid valves of refrigerant
equipment.
3.0pen the vapor valve of the refrigerant tank.
Start operation
4.Press the "START" button to start machine.
5. Turn the knob to "Recover".
6.a. If recover liquid refrigerant, please open the liquid
valve of the manifold gauge.
b. If recover vapor refrigerant, please open the vapor
valve of the manifold gauge.
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N.AYf.AC
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Vapor valve
Liquid valve
( 3)o;enl
( NRDC4M )
Refrigerant tank
7 .Switch to "B" position when pressure is < 36 psi to speed
up Vapor recovery.
8.The recovery mode will be finished when machine runs
to certain vacuum level or automatic close of low
pressure protection.
Do not turn off the power after recovery finished and
directly run self purging mode.
A Notice
(!)When liquid hammer occurs.tum Acceleration Knob to
"A". and adjust main knob "1" to
From "0".
@If it is difficult to start, turn to" CLOSE• when liquid,
turn to" PURGE" when vapor, then press" START"
to restart the machine , and turn to the required
position.
Empowering you to work smarter
OPERATING INSTRUCTION

3). Purge mode

A Notice
The unit must be purged after each use;Liquid refrigerant remained may expand and damage the
components and pollute the environment.
Vapor valve
Refrigerant
( Manifold gauge)
equipment
Use NVR1 valve core removal for faster recovery speed.
Start operation
1.The machine stops automatically after recovery finished based on LP cutoff setting.
2.Turn the knob to "Close" and the LP cutoff blinks, press· STA RT " button to start the machine.
3.Turn the knob to "Purge" and start self purging.
4.The self purging mode will be finished when machine runs to certain vacuum level.
Finish operation
5. Turn the knob to "Close".
6. Turn off the power switch. Disconnect power cord.
7. Close the check valve which connected to exhaust.
8. Close the \0por valve of the tank.
9. Disconnect all hoses.
NOTE:
For maximum performance do not use a manifold for recovery. Use 3/8" or 1 /2" diameter hoses and
a full flow tee fitting between system connections and machine inlet. Use NRV1 (s) to remove cores
and control refrigerant flow from system.
N.AYf.AC
Vapor valve
�
liquid valve
(?BIii
( NRDC4M )
Refrigerant tank
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