1. Undo the screw retaining the spark electrode to the burner tray (Fig. 40). 2. Undo the screw retaining the burner to the burner tray…
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Bent tube boilers usually have three drums. The drums are usually of the same diameter and positioned at different levels with each other. The uppermost…
In some fire-tube boilers, the tubes run vertically, as opposed to the horizontal arrangement in the Scotch boiler. The VERTICAL-TUBE boiler sits in an upright…
Most run capacitors and some starting capacitors are of the oil-filled type. This is especially true for high current motors such as those used to…
The permanent-split capacitor motor has greatly increased in popularity for use in the air conditioning field over the past years. This type of split-phase motor…
It should be noted that the motor does not use less energy when connected to 240 volts than it does when connected to 120 volts.…
Single-phase motors can also be constructed to operate on two separate voltages. These motors are designed to be connected to 120 or 240 volts. A…
The stator winding of a single-phase motor is generally tested with an ohmmeter. The ohmmeter test can be used to determine if a winding is…
Capacitor-start induction-run motors are very similar to resistance-start induction-run motors. The design of the stator winding is basically the same. The main difference is that…
The diffuser or grille minimum pressure for a given air volume reflects itself in ultimate system fan horsepower requirements. A diffuser or grille with a…