NAVAC Master NRDDF User manual

NRDDF
User Manual
Recovery Unit for
Flammable Refrigerants

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.
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
Only a qualified electrician can do the wire connection according to the technical standardand circuit
diagram.
connected and grounded.
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.
Mode
Mode
Mode
Design standard:
UL 121201: Ninth Edition
CSA-C22.2 No.213-17
UL 1963: Fourth Edition
CSA-C22.2 No.120-13
IEC: 60079-0, 60079-7
Marking:
Class I, Division 2, Group D T4
For recovering only HVAC/R refrigerants from sealed HVAC/R systems. Warranty VOIDED if used for
any other purposes.

A digital scale is needed to prevent overfilling.
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
comply
plugged
cool the tank down.

Category III: R12, R134a, R401C, R500, R1234YF, R600a
Category IV: R22, R401A, R401B, R402B, R407C, R407D, R408A,
R409A, R411A, R411B, R412A, R502, R509, R290
Category V: R32, R402A, R404A, R407A, R407B, R410A, R507
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38.5bar/3850kpa(558psi)
32~104°F
Rerfigerants
High Temp Vapor
Direct Vapor
Direct Liquid
Push/pull Liquid
R-22a
0.62 lbs/min
0.55 lbs/min
6.88 lbs/min
14.2 lbs/min
R-134a
N/A
0.37 lbs/min
5.34 lbs/min
11.0 lbs/min
R-410a
N/A
0.49 lbs/min
7.98 lbs/min
15.1 lbs/min
25 lbs

open
open
.
stops rotating.
Digital Control Board

7.Press the " START" button to start machine.
8.Turn the knob to recover,
9. Observe the reading of the lowpressure gauge
when it reaches to -20inHg, after 20 seconds, LP
cutoff opens and the machine shuts off.
Disconnect
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4.Press the "START" button to start machine.
5.Turn the knob to "Recover".
leve
based on setting
level
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Notice
If fluid hammer happens in the recovery, please
turn the knob to “Slow” position slowly, then the
reading of low pressure gauge drops until fluid
hammer stops; but do not let reading pressure
drop to zero, otherwise inlet port is not pumping
once at zero pressure.
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.
8.

3.Press "START" button to start machine, then it starts
liquid push/pull mode.
4.Turn the knob to "Recover".
control board
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recovery
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Refer to section 6 of OPERATION
MANUAL on page 3.
Could restart with pressure rise.
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