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Category: Consideration

Consideration

Bubble Solution Leak Detection Method

Posted on March 21, 2019June 10, 2019 by matt

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…

Consideration

Multimeters – Measuring Current

Posted on March 21, 2019June 10, 2019 by matt

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…

Consideration

Multimeters (VOM/DMM) Basics

Posted on March 21, 2019June 10, 2019 by matt

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…

Consideration

Multimeters – Measuring Voltage

Posted on March 21, 2019June 10, 2019 by matt

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)…

Consideration

Multimeters – Measuring Resistance

Posted on March 21, 2019June 10, 2019 by matt

Multimeters can measure the resistance in ohms (£2) of all or any part of the circuit. Resistance values o f HVAC components can vary greatly…

Consideration

Ammeters Basics

Posted on March 21, 2019June 10, 2019 by matt

Ammeters measure current flow through a circuit. Depending on the level of the current being measured, the ammeter reads in amperes, milliamperes (one thousandth of…

Consideration

Disconnecting the Gauge Manifold

Posted on March 21, 2019 by matt

The procedure used for disconnecting the gauge manifold set varies, depending on the type of service valves installed in the unit. If the unit being…

Consideration

GAUGE MANIFOLD VALVE SETTINGS

Posted on March 21, 2019June 10, 2019 by matt
Consideration

Connecting the Gauge Manifold

Posted on March 21, 2019June 10, 2019 by matt

For years, refrigerant has been used to purge air from the service hoses prior to making the final connection to the unit. Obviously this causes…

Consideration

Adjusting the Gauge Manifold

Posted on March 21, 2019June 10, 2019 by matt

Figure 3-15 shows how the flow of refrigerant through the gauge manifold set is controlled. The hand valve on the left controls the flow to…

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