Bacharach 2072-0400 manual Instruction

MAC2000 Operation

3.After entering the Charge mode, the following options are available:

•Press the Enter key to accept the 2.00 pound Default.

•Press the Weight Convert key to change the “Set charge weight” units.

•Use the Increase or Decrease keys to set the desired charge amount. Select the next higher value if the exact charge amount cannot be entered. Press Enter to accept the charge amount shown on the screen.

Note: The MAC2000 charges in one-ounce increments, regardless of which unit of measure is selected. This means that sometimes the exact charge amount cannot be entered. For example, the A/C system may require a 1.03 kg charge. The MAC2000 will only allow a setting of 1.02 kg or 1.04 kg. In this instance, always select the next higher value. This difference is only 0.3 of an ounce, which will not affect the vehicle’s A/C performance.

4.By default the MAC2000 charges liquid refrigerant directly into the high side of the A/C system. A technician, however, may choose to charge into both the high and low side by pressing the Low side ON-OFFfunction key. Pressing this key toggles the low-side option on and off. Important! Charging liquid directly into the low side of the compressor could slug the compressor and cause permanent damage. Check with the compressor manufacture before proceeding.

5.The screen should now show the amount of refrigerant set for charging. Press the Start key to begin the charging process.

During the charging process, liquid refrigerant is drawn from the unit’s internal storage tank and charged through the high side (and optionally the low side) of the vehicle’s A/C system. The screen will show the progress of this charging process.

Important! Do not disturb or bump the MAC2000 during charging as any jarring movement can affect the charge accuracy.

Note: If an insufficient pressure differential exists between the tank and the system, charging suspends and the MCR2000 goes into a power-charge mode to increase tank pressure to complete the charge. This normally occurs only when the unit has been in a very cold environment prior to use.

6.When charging is complete, the red light and beeper signal that the process is complete. The MAC2000 automatically goes into the Snap-Shot mode, thus allowing a technician to obtain an after- service snap-shot of important operating parameters of the A/C system. Refer to Section 3.2 for details.

Instruction 2072-0400 21