Similar starter capacitors are available for air conditioning compressors. Here are some sample capacitor installation instructions for adding a motor starter capacitor to an air conditioning compressor motor - taken from the product package for a relay and start capacitor intended for use on a refrigerator or freezer. Simple Relay and Hard Start Capacitor Wiring Instructions - Example 2 Use special "piggy back" terminal of the SPP-5 if all the run capacitor terminals are being used. SPP-5, a relay and hard start capacitor sold by that company:Ĭonnect the two wires from the SPP-5 in parallel with the run capacitor (one wire each side) without removing any original wires. Relay and hard start capacitors such as the Starter Pow-R-Pak sold by Sealed Unit Parts Co., can be installed with no wiring changes to the original system whatsoever. (120V, 60 cycle/sec x 60 sec/min = 3600 rpm).Įlectric motor diagnostic procedures are given in detailĪt ELECTRIC MOTOR DIAGNOSTIC GUIDE Simple Relay and Hard Start Capacitor Wiring Instructions - Example 1 Two-coils marks a motor that runs at 3450 rpm (3600 rpm "nominal"), while 4 coils marks a 1725 rpm motor.
Copeland compressor service manual pdf how to#
See How to INSTALL & WIRE Up an Air Conditioner Compressor, Blower Motor, or Fan Motor Hard Starting Capacitor.Įlectric Motor run speed side note: Incidentally while most electric motors are marked with a data tag indicating the motor run speed (in RPMs) it's worth noting that the number of run coils is what determines the run speed of the motor. On many systems these terminals may be labeled so that the three leads on a start/run capacitor can be wired correctly: In our capacitor testing and wiring sketch at left, you note we use the letters S, C, and R to identify the usual terminals to which a start/run capacitor is wired. Our example is for a Frigidaire compressor motor. The third one will be the common terminal. Never work on live electrical equipment.Ī fractional horsepower electrical motor should show different electrical resistance between the three terminals (Start, Run, and Common) as we illustrate just below.įind the two highest resistance terminals. Watch out: live high voltage may be present at a capacitor, capable of giving a tremendous electrical shock even after electrical power has been disconnected at the equipment. In a single phase (common residential A/C) compressor you can verify with an ohmmeter whether or not the A/C compressor is bad. Most electrical problems in air conditioning systems are in the compressors and their relays or motor overload switches. How to Install and Wire Up an Air Conditioner Compressor, Blower Motor, or Fan Motor Hard Starting Capacitor Make These Simple A/C Compressor Checks Before Adding a Hard-Start Capacitor We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.
Copeland compressor service manual pdf series#
This electric motor capacitor article series explains the selection, installation, testing, & use of electric motor starter start and run capacitors used on various electric motors found in or at buildings such as air conditioner compressors, fan motors, some well pumps and some heating equipment. This article gives electric motor start-run capacitor installation & wiring instructions for electric motor capacitors designed to start & run an electric motor such as an AC compressor, heat pump compressor or a fan motor, and how to wire up a hard-starting air conditioner compressor motor, fan motor, to get an air conditioner, heat pump, refrigerator, or freezer compressor or other electric motor (such as a well pump) going. How to hook up an electric motor start or run capacitor: We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.