Wow 0900700605, Instruction Manual, Page: 4 / 32

Automatic A/C-Service Unit
4
Letzte Änderung: 24.06.2009 / Art.Nr.: 2059ENG
WARNING
Safety precautions
a) This equipment is designed for trained personnel only, who must know the
refrigeration fundamentals, cooling systems, refrigerants and
possible damage that pressurized equipment may cause.
b) Carefully read the instructions contained in this manual; strict
observance of the procedures described is fundamental to the operator’s
safety, the perfect state of the unit and constant performances as
declared.
c) Do not operate the unit with different refrigerant than the one it has
been designed for.
d) Before performing any operation, make sure that the hoses used for
connections have been previously evacuated and that they do not
contain non-condensable gases.
e) Avoid skin contact; the low boiling temperature of the refrigerant (about -30°C)
can cause freezing.
f) Avoid breathing refrigerant vapours.
g) It is recommended to wear suitable protections like safety glasses and
gloves; contact with refrigerant may cause blindness and other personal
injuries.
h) Do not operate near open flames and hot surfaces; the high temperatures
decompose the refrigerant releasing toxic and caustic substances which
are hazardous for the operator and the environment.
i) Always make sure that the unit is connected to a suitably protected mains
supply provided with an efficient earth connection.
j) Before performing maintenance operations or when the unit will not be used
for a long period of time, turn the unit off by turning the main switch to 0
and disconnect the power supply cord; absolutely follow the
sequence of operations.
k) Operate the unit only in locations with suitable ventilation and a high
number of air changes.
l) Before disconnecting the unit, make sure that the cycle has been
completed and that all valves are closed in order to avoid release of
refrigerant to the atmosphere.
m) Never fill any tank with liquid refrigerant to more than 75% of its maximum
capacity.
n) During operations avoid release of refrigerant to the environment; this
precaution is required by international environmental standards and is essential to avoid
difficult leak detection in a refrigerant polluted environment.
o) The equipment must always work under the operator’s control.
p) Protect the unit from dripping.
q) Do not modify the calibration of safety valves and control systems.
r) If you recover refrigerant from a cooling system equipped with a water
evaporator and/or condenser, it is necessary to drain water from the
evaporator and/or condenser or to keep the circulation pump running
during the entire recovery operation in order to avoid frosting.