2-13
IInnssttaallllaattiioonn
aanndd
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Oppeerraattiioonn
Charging A/C System
1. Close the yellow service hose hand valve.
2. Remove yellow hose with anti-blowback valve from the
“Recycle” port and connect it to the “Charge” port.
3. Open blue (liquid) tank valve.
4. Press Mode Button so a tare weight of 0.0 is displayed.
5. Connect service hoses to vehicle. Open manifold hand
valves.
6. Open yellow service hose hand valve.
Refrigerant flows from tank into vehicle.
7. Monitor tank weight. When desired charge amount is
reached, close yellow service hose hand valve or
couplers.
Refrigerant flow stops.
3
3
3
3
If desired charge amount cannot be reached:
—
Close high and low side manifold hand valves,
3
3
3
3
Never run A/C system with high side manifold valve
open.
—
Run A/C system,
—
Open low side manifold hand valve,
—
Monitor tank weight and close hand valve when
desired charge amount is reached.
8. Close blue (liquid) recovery tank hand valve.
9. Monitor high and low side system pressures. Refer to
manufacturer specifications for proper operation and
diagnosis.
Charge complete.
3
3
3
3
When charging a vehicle after evacuation, allow for the
capacity of the hoses. Each hose holds approximately
two ounces, so the charge amount should be increased
by two ounces for each hose used.
—
If there is not enough refrigerant in the tank to
charge, refer to
Adding Refrigerant to D
Duuaall
33441122
in
this chapter.
Summary of Contents for Dual 3412
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Page 8: ...viii U Us si in ng g t th hi is s M Ma an nu ua al l ...
Page 14: ...VI S Sa af fe et ty y I In nf fo or rm ma at ti io on n ...
Page 26: ...1 12 I In nt tr ro od du uc ct ti io on n ...
