EASYREC 1R-2R ENGLISH
6
Safety precautions and Operation guidelines
a) Read all safety, operating guidelines and instructions before operating this unit.
b) Only a qualified technician should operate this recovery unit!
c) Always wear safety glasses and protective gloves while working with refrigerants to protect your eyes
and skin from refrigerant gases and refrigerant liquid. Avoid getting in touch with caustic liquid or gas.
d) Do not expose the equipment to the sun or rain.
e) Be sure that any room where you are working is thoroughly ventilated.
f) Use ONLY authorized refillable refrigerant tanks. It requires the use of recovery tanks with a minimum
working pressure of 40 bar.
g) The input pressure of the unit should not exceed 26 bar.
h) Do not overfill the recovery tank. Tank is full at 75% capacity. There should be enough space for liquid
expansion. Overfilling of the tank may cause a violent explosion.
i) Do not exceed the working pressure of the recovery tank cylinder.
j) Do not mix different refrigerants together in one tank, or they could not be separated or used.
k) Before recovering the refrigerant, the tank should achieve the vacuum level: -0.09 MPa, which is for
purging non-condensable gases.
l) When the unit is not used, all valves should be closed and the input and output fittings should be
covered with their protective caps, as air and/or moisture may damage the recovery performances and
shorten the service life of compressor.
m) If using an extension power cord, it should be a minimum 2.0mm
2
wires section and no longer than 30
meters, or it may make the voltage drop and damage the compressor.
n) A filter drier must always be used and should be replaced frequently. Each type of refrigerant must have
its own filter. For the sake of ensuring the normal operation of the unit, please use the filter specified by
our company. High quality filter drier will bring high quality services.
o) Special care should be taken while 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 foreign substances left inside.
p) The unit has an Internal High Pressure Shut Off Switch. If the pressure inside the system goes above
38.5 bar, the unit will automatically shut itself off and the Red Alarm Light will turn on. If the compressor
needs to be restarted, please find out the cause first, then reduce the internal pressure below 25 bar.
Press the START button to restart the compressor.
When the unit is under high pressure condition, restart the unit after eliminating the troubles
Solutions for possible causes of High Pressure Shut Off:
1. Open the output valve of the unit if it's closed.
2. Open the input valve of the recovery tank if it's closed.
3. Check if the hose connected between the unit and the recovery tank is jammed. If yes, please close
the output valve of the unit and the input valve of the recovery tank and then change a new one.
4. The temperature and the pressure of the recovery tank is too high (see recovery tank cooling
method)
q) Do not use with flammable refrigerants
r) While using the recovery unit, make sure the power of the air-conditioning system is off
s) The unit has an Internal Low Pressure Shut Off Switch (Pressure/vacuum switch). The unit will
automatically shut itself off if the inner pressure is lower than -0.4bar and the “complete” green light will
turn on. To restart the compressor, please increase the input pressure above +0.8 bar, then press the
START button.
t) Electric current and temperature can be both controlled by the breaker in circuit. When the unit is
breakdown or overloaded (locked), the breaker will turn out jumped. After five minutes when the unit
faults remove, press breaker button then press the start button.
u) To maximize recovery rates, use the shortest possible length of 3/8" or larger hose.
v) While recovering large amounts of liquid, use the liquid Push/Pull method.
w) After recovering, make sure there is no refrigerant left in the unit. Read the Self-Purging Method
carefully. If liquid refrigerant remains in the unit, it can expand and damage the components.
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