Rothenberger ROREC Instructions D'utilisation page 13

GENERAL SAFETY GUIDELINES
a) Read all safety, operating guidelines and instructions before operating this unit.
b) This recovery unit should be operated by a qualified technician only.
c) Always wear safety goggles and protective gloves when working with refrigerants to protect your skin and
eyes from refrigerant gases and refrigerant liquid. Avoid getting in touch with causticity liquid or gas.
d) Do not expose the equipment in the sun or rain.
e) Please be sure that any room where you are working is thoroughly ventilated.
f) Use ONLY authorized refillable refrigerant tanks. It requires the use of recovering tanks with a
minimum of 27.6 bar working pressure.
g) Do not overfill the storage tank. Tank is full with 80% of volume. There should be enough space
for liquid expansion---overfilling of the tank may cause a violent explosion. Must use a 80% O.F.P
storage tank or a scale to avoid over filling.
h) Do not exceed the working pressure of Recovering Tank cylinder.
i) Do not mix different refrigerants together in one tank, or they could not be separated or used.
j) Before recovering the refrigerant, the tank should achieve the vacuum level: -0.1mpa, which is for
purging non-condensable gases. Each tank was full of nitrogen when it was manufactured in the
factory, thus the nitrogen should be evacuated before the first use.
k) When the unit is not used, all the valves should be closed. Because the air or the moisture of the air
may harm the recovery result and shorten the service life of the unit.
l) When using an extension cord it should be a 12AWG minimum and no longer than 30 meters, or it
may make the voltage drop and damage the compressor.
m) A dry filter must always be used and should be replaced frequently. And each type of refrigerant must
have its own filter. For the sake of assuring the normal operation of the unit, please use the filter
specified by our company. High quality dry filters will bring high quality services.
n) Special care should be taken when recovering from a "burned-out" system. Use two high acid capacity
filters, in series. When you have finished recovering from the system, flush the unit with a small amount
of clean refrigerant and refrigerant oil to purge off any foreign substances left in the unit.
o) This unit has an internal pressure protector. If the system's internal pressure is higher than 38.5 bars,
the system will shut-off automatically. Turn off the power switch and release some pressure, then
reset it manually. (See Exploded Drawing 16).
If the unit automatically shuts-off, please restart it after troubleshooting.
Main reason and problem solving for automatic shut-off:
1. Check the output valve, please switch to open.
2. Check the valve on cylinder, please switch to open
3. Check the connecting hose blocked or not, if yes, please replace it (make sure all valves are off).
4. Check the temperature of cylinder, the pressure will rise if the temperature is raise.
(See Page 20 cooling method).
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SAFETY
WARNING
!
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