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7 Commissioning
t
All the operations described in Section 7 must be
performed prior to first A/C service
7.1
Connections and positioning
m
The AC442 is designed for 110V, 50/60Hz.
Follow the information on the AC442 rating
plate.
1
Set the AC442 on a flat, vibration proof surface.
2
Actuate the caster brake to stop the AC442 from rolling.
3
Connect the power supply cable to the power supply.
4
Switch on the main switch.
m
The unit must be positioned on a stable, horizontal
surface to ensure correct operation. Unit must be in an
area with proper ventilation and at least 10cm from
any potential obstacle to its internal ventilation.
Keep unit out of rain and excessive humidity as
moisture could cause irreparable damage.
m
Prevent exposure to direct sunlight and excessive dust.
m
Unit must be properly grounded with the power plug
ground pin. Failure to ground unit can cause damage and
constitutes a risk of fatal injury or shock to the operator.
t
Do not unplug any internal electrical connections and
only have internal components opened and repaired
by trained customer service personnel.
t
Contact customer service in the event of any transportation
damage (e.g. oil leakage).
t
Leave quick couplings closed when unit is not in use and
at end of vehicle service operations.
1901016-85
7.2 First start-up verification
Warning – Risk of frostbite from
escaping refrigerant
Refrigerant causes frostbite on the skin
Check the service hoses for damage
Firmly connect the service quick-
release couplings to the service
hoses.
Wear protective goggles.
Wear protective gloves.
Execute the following actions in sequential order by
following the procedure as shown on the display:
—
Gas weight check (vacuums entire
refrigerant circuit to ensure no
contaminants are in system prior
to filling
—
First internal cylinder fill
o
It is possible to interrupt the initial check and print a
report in which the status of the check is reported (if
printer option was purchased).
t
Equipment cannot operate in automatic mode until all
the steps of initial check are completed.
1. Set the internal cylinder fill to desired quantity (min. 3kg).
2. Follow on-screen instructions.
3. Make sure hoses are disconnected from any external
source at this time.
4. Start the procedure that initially creates vacuum in the
internal refrigerant circuit (approximately 15 minute
process).
5. Once message is displayed, the unit can be connected
to the external cylinder and the valves opened.
6. Just before the targeted refrigerant amount is
reached, unit will pause and prompt user to close
external refrigerant tank connection.
7. Once this is done, the unit will continue to recover the
refrigerant from the hoses and end once this is
completed. The total amount recovered will then be
displayed.
Commissioning | AC442 | 16 en
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