Series P215PR / RM direct-mounted and remote-mounted pressure-controlled condenser speed controllers are designed for speed variation of single-phase motors. Head pressure control of a refrigeration system, by fan speed variation on an air-cooled condenser, results in optimum performance throughout the year. Once the output drops below 30%, the fan is switched off. Series P215PR / RM controllers are designed for non-corrosive refrigerant systems. See Table 1 for a list of features and benefits.

A pressure-operated controller provides the most immediate and fastest response to pressure variations in the refrigerant system. The controller varies the supply voltage to the motor from 30% to at least 95% over the proportional band using the phase mechanism. This principle provides speed variation of a permanent split capacitor or shaded pole motors drawing no more than 4 A (RMS) full-load current. The motor manufacturer must have approved the product for this principle of speed control.

We recommend confirming with the electric motor manufacturer that the motor can be used with a controller, using the phase cut principle for speed variation. You can also provide a copy of this product data sheet to the motor manufacturer or supplier for review.