Technical information

Rev. 12/2002
CARPIGIANI Operation Manual - LB 302, LB 502, LB 1002, LB 302 G, LB 502 G, LB 1002 G
Page 5
MACHINE EQUIPPED WITH AIR COOLED
CONDENSER
• Machines with air-cooled condenser must be installed
at least 2 feet (24 inches) away from any wall or object
to allow the free circulation of air around the condenser
(ref. Fig. 1).
Insufficient air circulation effects the operation and
output capacity of the machine. If these clearances
are not maintained, the production capacity will
be reduced, cycling will increase, and the machine
may stop completely.
• It is necessary to clean the condenser each month to
eliminate dust, paper, etc., which may obstruct it.
Failure to do so may result in potential damage to the
machine and improper functioning.
• The machine should be within six feet of the power sup-
ply (a plug and receptacle or unfused disconnected).
• Position the machine to allow easy access for clean-
ing, servicing and maintenance.
• Position the machine away from direct sunlight.
For every 2EF over 68EF, the machine’s performance
will decrease by approximately 1%.
• Once the machine is set in position, it should be lev-
eled as accurately as possible.
Figure 1
MACHINE EQUIPPED WITH WATER-COOLED
CONDENSER
• If the unit is water-cooled, it should be located close to
the water supply and within six feet of a drain.
• Connect the fitting marked “WATER IN” to the cold wa-
ter supply. Connect the fitting marked “WATER OUT” to
a drain (ref. Fig.2).
All plumbing must meet local or state codes.
WATER
OUTLET
WATER
INLET
Figure 2
WATER VALVE ADJUSTMENT
The water valve is preset at the factory.
Proceed as follows if an adjustment is required:
• To maintain a head pressure of 235-255 psi while the
compressor is running, attach a refrigeration high pressure
gauge to the compressor’s high side discharge port.
• Open the water valve clockwise to increase the pressure or
counter clockwise to decrease the pressure (ref. Fig. 3).
Figure 3
Never expose water-cooled machines to tempera-
tures at or below 32°F. without first draining the
water from the condenser. Serious damage to the
machine can occur if it is not properly drained.
Air cooled condenser:
A≥≥ 24 in
B≥≥ 6 in
Water cooled condenser:
A≥≥ 4 in
B≥≥ 6 in
A
B