Principles Of Operation; Setup - MasterCool 69789-220 Instrucciones De Operación

vapor is exposed to open flames or incandescent surfaces it may undergo thermal
decomposition and form acid substances. The acrid and pungent odor of these products of
decomposition is sufficient to signal their presence. We therefore recommend avoiding use of
R134a near open flames and incandescent elements. There exists no evidence of risks
deriving from transdermal absorption of R134a Nevertheless, due to the low boiling point of the
liquid, it is advisable to wear protective garments such as to ensure that no jets of liquid or gas
can come into contact with the skin. The use of goggles to avoid contact with the eyes is
especially recommended, since the refrigerant liquid or gas can cause freezing of the ocular
fluids. Moreover, we strongly advise users to avoid dispersing the R134a refrigerant fluid
utilized in the machine since it is a substance that contributes to raising the temperature of the
planet, with a global warming potential(GWP) of 1300.

PRINCIPLES OF OPERATION

In a single series of operations, the machine permits recovering and recycling refrigerant fluids
with no risk of releasing the fluids into the environment, and also permits purging the A/C
system of humidity and deposits contained in the oil. The machine is in fact equipped with a
built-in evaporator/separator that removes oil and other impurities from the refrigerant fluid
recovered from the A/C system and collects them in a container for that purpose. The fluid is
then filtered and returned perfectly recycled to the bottle installed on the machine. The machine
also permits running certain operational and seal tests on the A/C system.

SETUP

The machine is supplied fully assembled and tested. Referring to Figure 3, mount the hose
with the BLUE quick-connect coupling on the male threaded connector indicated by the BLUE
LOW PRESSURE symbol and the RED quick-connect coupling on the male threaded
connector indicated by the RED HIGH PRESSURE symbol. Referring to Figure 4, remove the
protection under the refrigerant scale as follows::
- Loosen the nut [2].
- Completely loosen the screw [1].
- Keep the screw [1], the nut [2], and the knurled washer [4] for possible future use.
NOTE: in the event that the equipment has to be transported, the refrigerant bottle scale should
be locked in place as follows:
- Procure two size 10 wrenches.
- Tighten the nut [2] almost completely onto the screw [1].
- Insert the knurled washer [4] onto the screw [1].
- Turn the screw [1] just a few times on the threaded bush [6].
- Switch the machine on.
- Tighten the screw [1] until the display signals ZERO availability.
- Tighten the nut [2] forcefully (using the second wrench to block the screw [1]).
- Check that the screw [1] is actually locked, if necessary repeat the locking operation
from the beginning.
INSTRUCTIONS MANUAL
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