24
Installation and Operation
Recover Service Hoses w/Identifier Option
Follow this procedure to recover service
hoses.
1. Open the liquid and vapor recovery tank
valves.
2. Power up the
1090AT diagnostic™ unit.
3. Select the RECOVER icon and press
ENTER.
4. Select HOSE CLEAR to clear the hoses.
Evacuating Contaminated
Service Hoses
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If contaminated refrigerant or
refrigerant other than R-134a is
present in the service hoses, use a
separate recover only machine to
collect refrigerant.
Adding Refrigerant to the
Recovery Tank
Follow this procedure to add virgin or
recycled refrigerant to your
1090AT
diagnostic™ unit.
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White Industries® highly
recommends identifying refrigerant
before adding it to the recovery
tank.
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If the identifier option is installed, it
will be necessary to identify the
refrigerant in the supply tank
before recovering into the recovery
tank.
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The recovery tank should have at
least 11 lbs of refrigerant to charge
from the recovery tank.
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If this is a new tank installation,
refer to
Tank Preparation and
Evacuating Recovery Tank.
1. Open the liquid and vapor recovery tank
valves.
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Install the supplied tank adapter,
part number 1-15080, between the
tank valve and the blue service
hose. The virgin tank must be
upright (valve up).
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Do not recover liquid refrigerant
from a supply tank.
2. Connect the blue service hose from the
1090AT diagnostic™ unit to the virgin
refrigerant supply tank.
3. Open the following:
—
Virgin supply tank valve, and
—
Blue service hose coupler.
4. Power up the
1090AT diagnostic™ unit.
5. Select RECOVER and press ENTER.
The refrigerant flows from the virgin tank
through your
1090AT diagnostic™ unit
and into the prepared recovery tank.
6. When the desired amount of refrigerant
has been transferred into the recovery
tank, close the virgin tank hand valve.
7. Allow the recover/recycle operation to run
until 6 inHg of vacuum is reached, then
close the blue service hose coupler.
8. Drain any accumulated waste oil expelled
into the oil drain bottle.
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Discard refrigerant oil in
accordance with local, state, and
federal regulations that apply in
your area.
9. Press the N button to return to the main
menu screen.
Errors and Messages
Error messages will flash on the LCD
display until conditions are corrected.
Temperature Error
Temperature errors can occur when the unit
is operating outside its normal temperature
range or a temperature probe is damaged.
Warm the unit to normal operating
temperature and if error is still present, call
service.
Pressure Switch Error
A pressure switch error can occur when
internal excessive pressure is seen. This
high pressure will happen if the recovery
tank valve is closed or the hose fitting on
the tank is not installed or tight. Open the
tank valve or install or tighten the hose
fitting on the recovery tank.
For Reference Only
