The recovery of refrigerant removes refrigerant in any condition o f purity from a system or container for storage in an approved external container (recovery…
Because of the EPA regulations concerning venting and the use of refrigerants for leak testing, the recommended method for leak testing uses a trace amount…
A common method of leak detection is the use o f a leak detecting solution such as a water/soap solution (Figure SP-1-2). Its main advantages…
Electronic leak detectors (Figure SP-1-1) can typically detect leak rates of about 1/2 ounce per year. Normally, the leak detector sensing device is placed next…
If the system contains an adequate refrigerant charge, a visual check of the system might reveal the source of the leak. Since oil is mixed…
Making current measurements with a multimeter is different than making other measurements with a multimeter. Current measurements are made in series, unlike voltage or resistance…
Analog (VOM) and digital (DMM) multimeters are used to measure voltage (volts), resistance (ohms), and current (amperes). Some can be used to make other measurements…
Voltage measurements are usually made to determine source voltage, voltage drop, and/or voltage imbalance. Be sure to always connect the multimeter across (in parallel with)…