35
1
Fixed flange
2
Setscrews
3
Movable flange
4
Straight-edge must be parallel with belt
5
Motor and fan shafts must be parallel
6
Pulleys
7
Motor and fan shafts must be parallel
Fig. 29 - To align fan and motor pulleys
Lubrication
Both the motors and the fans have factory lubricated and sealed
bearings, and need no further lubrication.
The compressor has its own oil supply and oil should not be
added unless a leak has occurred.
Servicing recommendations
-
Before replacing any of the elements in the cooling
circuit, ensure that the entire refrigerant charge is removed
from both the high and low pressure sides of the unit.
-
The control elements of the cooling system are highly
sensitive. If they need to be replaced, care should be taken
not to overheat them with blowlamps whilst soldering. A
damp cloth should be wrapped around the component to
be soldered, and the flame directed away from the
component body.
-
Silver alloy soldering rods should always be used.
-
If the total unit gas charge has to be replaced, the quantity
should be as given on the nameplate and the unit should
be properly evacuated beforehand.
-
During unit operation all panels should be in place,
including the electrical box access panel.
-
If it is necessary to cut the lines of the refrigerant circuit,
tube cutters should always be used and never tools which
produce burrs. All refrigerant circuit tubing should be of
copper, specially made for refrigeration purposes.
Transformation to split system (50VZ/PZ units)
All units can be changed from a packaged to a split system, as
described below:
-
Disconnect the unit from the power supply.
-
Remove the compressor access panel(s) and the indoor
unit access panel(s).
-
Recover the complete refrigerant charge from the high and
low pressure sides of each refrigerant circuit, and then
create a light vacuum to prevent possible accidents.
-
From the indoor unit at the conduit drill hole remove the
neoprene insulation from the suction line(s) until you find
the welded joint of both line sections (approximately 70 mm
from the base of the indoor unit). Similarly locate the
welded joint of the liquid line sections. Separate both
lines (suction and liquid lines) by unsoldering them. After
completing this operation, plug the ends of both lines to
avoid the possible entry of foreign matter.
-
Loosen the indoor fan motor supply cable sleeve. Remove
the sleeve.
-
Remove the air filters.
-
Loosen the screws and nuts that join the two sections
(indoor and outdoor) inside the unit and separate them
carefully, to avoid damaging the refrigerant line ends.
-
Connect the refrigerant lines as described earlier in the
text.
-
Make the electrical connections.
FINAL RECOMMENDATIONS
The unit you have purchased has undergone strict quality
control procedures before leaving the factory.
All components, including the control systems and electrical
equipment, etc., are certified by our Quality Control
Department, and tested under the harshest possible operating
conditions in our laboratories. However, after leaving the
factory, it is possible that one or more of these elements may be
damaged due to causes beyond our control. In such an event,
the user should not work on any of the internal components,
or subject the unit to operating conditions which are not
specified in this manual,
since serious damage may result and
the guarantee would be invalidated. Repair and maintenance
work should always be left to the installer.
All recommendations concerning unit installation are intended
to be as a guideline. The installer should carry out the
installation according to the design conditions and should
comply with all applicable regulations for air conditioning and
refrigeration installations.
NOTE: The manufacturer does not accept responsibility for
any malfunctions resulting from misuse of the equipment.
