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Recovery Unit
NRDD
User Manual
Mode
Mode
In order to prolong the life cycle of the recovery unit, please read the manual carefully before using to fully
understand the safety, specification as well as operating procedure of the recovery unit.
Mode
Only a qualified technician should operate this recovery unit.
Before starting the equipment, make sure that it is well grounded.
If using electrical extension cord, the cord must be in good condition and properly
connected and grounded.
Only a qualified electrician can do the wire connection according to the technical standardand circuit
diagram.
The power must be cut off and no display in LCD before inspecting or repairing.
If the original power supply cord is damaged, an OEM replacement may be ordered throughyour
NAVAC distributor.
Please take power supply and the capacity of your ammeter and electrical wire.
A digita l sc ale i s ne ed ed to p re ve nt ov er fi lli ng .
3. The knob should be in the "Close" Position before operation. All the valves must be closed, the input and
output fittings should be covered with protective caps when the unit is not in operation. The air/ moisture is
harmful to the recovery result and will shorten the life span of the unit.
4. A filter drier should always be used and should be replaced regularty. And each type of refrigerant must
have its own filter. For the sake of ensuring the normal operation of the unit, please use highquality filter
drier specified by our company. A high quality filter drier will help protect machine .
determine
plugged
cool th e ta nk do wn .
compl y
Start/Stop: Starts and Stops recovery unit.
LP Switch: Hold for 3 seconds to switch between LP1, LP2, Lp3.
Units/Zero: Press to change units to InHg, Kpa, Psi, Kg/f, Bar, Mpa.
Hold for 3 seconds to zero out readings.
Cancel Alarm: Hold for 3 seconds to mute recovery unit.
LP1: (Auto shutoff with manual restart)
if the inlet pressure is lower than -20inHg for 20 seconds, the unit will shut down.
“LP Cutoff” will be displayed.
When LP ≥ 0 inHg you must press START to restart the recovery unit
LP2: (Auto shutoff with automatic restart)
if the inlet pressure is lower than -20inHg for 20 seconds, the unit will shut down.
“LP Cutoff” is displayed.
When LP ≥ 0 inHg the unit will restart automatically.
LP3: (Continuous Run)
The recovery unit will run continuously, no matter what the level the input pressure
is (LP)
O.F.P Cutoff: Will light up when the recovery cylinder is 80% filled, or if the OFP cable is
opened. The machine will stop running.
LP Cutoff: will light up when low pressure switch is activated for more than 20 seconds
below -20 inHg.
HP Cutoff: Will light up when high pressure switch is activated above 560 Psi.
stops rotating.
open
open
.
Dig ital Co ntrol B oard
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