Pull up on and reposition the washer reservoir (Item 1) [Figure 70-40-1].
Locate the low pressure port (Item 1) and high pressure port (Item 2) [Figure 70-40-2].
NOTE:Before reclaiming a refrigeration system, it is recommended to identify the type of
refrigerant that is in the A/C system and if it is pure enough to use. The tool MEL1592,
Refrigerant Identifier (Item 1) [Figure 70-40-3] will determine the kind of refrigerant and any
possible harmful or dangerous substances that may be present in the system. Thus preventing mixing of dangerous material with your reclaimed R-134a in your reclaimer, and further contamination to other A/C systems that are reclaimed and charged from your MEL1581 Recovery / Recycling / Recharging Machine.
Remove the protective cap and connect the Refrigerant Identifier to the low pressure hose (Item 1) [Figure 70-40-4].
Connect the refrigerant identifier to a power source.
Follow the steps displayed on the refrigerant identifier screen.
Allow two minutes for the refrigerant identifier to display the type of refrigerant and air content. An alarm will sound if potentially flammable hydrocarbons are present and will also indicate on the visual display.
Disconnect the refrigerant identifier from the excavator A/C.
If the refrigerant is dangerous or flammable, it must be evacuated from the A/C system into a separate container and properly and safely disposed of.
If R-134a is found, evacuate the system.
