Page 7
SKU 92649
For technical questions, please call 1-800-444-3353
Operation (continued)
Maintenance
1.
Before each use, inspect the general condition of the A/C Manifold Set. Check for
cracked or broken parts, damaged Hoses (17,18,19), and any other condition that may
affect safe operation. If a problem with the Set occurs, have it corrected before further
use.
Do not use damaged equipment.
2.
Periodically, clean with a damp cloth using a mild detergent or solvent.
3.
When storing, keep the Set clean and dry. Also, connect the High Pressure Coupler
(22) and the Low Pressure Coupler (23) to its corresponding Solid Storage Connector
(6 & 7) to prevent contamination from entering the Set when not in use. See
FIGURE
1 on page 6 and the Assembly Drawing on page 8.
5.
Connect both ends of the Yellow Refrigeration Charging Hose (18) to the T-fitting (16)
on the Manifold Body (2). See
FIGURE 1, above.
CAUTION: Make sure that manifold and hoses are not in the way of cooling fan(s) or belts.
6.
With the transmission in PARK and the emergency brake set, start and fast idle the
engine at approximately 1,500 RPM.
CAUTION: Make sure this procedure is
conducted in a WELL VENTILATED area. Never perform a test in an enclosed
garage. The carbon monoxide emitted from a running engine is a colorless,
odorless gas that can cause injury and death if inhaled.
7.
Set the A/C system for maximum cooling for about ten minutes to allow pressures to
stabilize. Close the vehicle’s doors and open all windows, and leave the hood fully open.
Place a temperature gauge (not included) in one of the air outlets in the passenger
compartment. Place another temperature gauge (not included) at the condenser to
measure ambient (outside) air temperature. Both temperatures are usually needed to
analyze A/C system performance.
8.
Turn the Control Valves of the Red High Pressure Coupler (22) and Blue Low Pressure
Coupler (23) clockwise to open. See
FIGURE 1, above.
9.
Observe and note the reading on the High Pressure Gauge (3) and Low Pressure Gauge
(5). Then, compare that reading and the temperature on the temperature gauges to
the readings as noted in the vehicle manufacturer’s service manual.
Note: Pressure
gauge readings vary with ambient air temperature, humidity, and system design. See
FIGURE 1 on page 6.
10.
When finished, turn off the A/C and engine. Turn the Control Valves of the Red High
Pressure Coupler (22) and Blue Low Pressure Coupler (23) counterclockwise to close,
and remove the Couplers from the A/C system. See
FIGURE 1 on page 6.
11.
Use care when disconnecting the Control Valves from the A/C system service fittings,
the hoses may contain some residual refrigerant.
REV 05f, 09h
