changing capacitor in ac unit

Packard 440-Volt 45/5 MFD Dual Rated Motor Run Round Capacitor Dual rated motor run capacitor 45/5 MFD, 440 Voltage, round. For heavy duty continuous applications such as furnace blower motor and condenser fan motors. Capacitors can hold a charge for long periods of time. To prevent shock the capacitor should be discharged before it is removed. 4 blade insulated quick disconnect terminals Dimensions may vary due to manufacturing changes UL listed and CUL approved 1 Central AC unit What would be the reason a repairman would replace the capacitor on a central AC unit with a 45/5 440 volt capacitor if the unit only required a 40/5 370 volt capacitor. Is there a reason why he did this? 1 Is this the same as capacitor 45/5 cbb65b the one i have has one top with one blade, one top with 2 blades, 1 top with 4 blades and only have 4 wires Dual Run Capacitor 35/5 MFD 440 Volt Round - Air Conditioning Replacement PartDetailsTEMCo Dual Run Capacitor RC0138 - 30/5 mfd 370 V 440 V VAC volt 30/5 uf AC Electric Motor HVAC
35/5 MFD 440V ROUND 5 x 2 x 2 inches #54,606 in Home Improvements (See top 100) #108 in Industrial & Scientific > Industrial Electrical > Passive Components > Capacitors 7.2 ounces (View shipping rates and policies) See all 43 customer reviews See all 43 customer reviews (newest first) Fast 3 day dilivery, working fine. just what I ordered, couldn't of been easier! exact product I wanted, timely delivey, thanks. Exact replacement, good price and fast delivery.It got my a/c working like a champ. got for doing myself better than paying 120.00 by ac service My 5 ton Bryant AC has been running OK a year with it Supco SUPCO-CD35+5X440R Round Motor Capacitor GE Genteq Round Capacitor 45 5 uf MFD 370 Volt 97F9895 Z97F995 97F9895BZ3 27L880 See and discover other items: 50/5/370 capacitorParts and repair research can be done with our guide to understanding heating and AC in Phoenix, AZ If you need service, please call (602) 842-6742. 
This guide gives basic information regarding the parts in your AC and heating system.air handling units catalogue …an air conditioner start deviceyork ac parts houstonWhen a Run Capacitor fails, it is wise to consider a Compressor Hard Start Kit to avoid Secondary system failure.what is the function of the capacitor in an ac unit Ask the experts:  A bad or weak Run Capacitor can significantly shorten the life of your air conditioner. …a Contactor is the main switch that supplies power to your CompressorThe major killer of compressors is a contactor with pitted or corroded contact points.  Ask the experts:  Replacing a Contactor older than 5 years will extend the life of your air conditioner.Reducing amps at start up will prolong the life of your system.  
Ask the experts:  If a compressor starts to draw high amps at start up, it is a sign that it is “seizing up” & at risk for potential failure. Shorted or open motor windings Out of balance or broken fan bladeIf the Condenser Fan/Blower has failed and the unit is 8 to 10 years old or older, you should consider system replacement. Ask the experts: Condenser Fan/Blower failure is a good indication that the air conditioner is old and more trouble is on the way. A complete system replacement is highly recommended. Worn or seized motor bearings Blower running below normal speed Wheel defective or out of balance Dirty blower motor or wheelQuality contractors will replace both the Blower Wheel and the Blower Motor when the Blower Motor needs replacing. This can limit annoying blower noise and prevent premature failure of the replacement motor bearings. Ask the experts: Often the Blower Wheel is severely damaged when trying to remove it from a rusted motor shaft.
Problems caused by this condition: Part of our Comfort Club Membership is to clean condenser coils every visit, to ensure maximum efficiency. ….reduces efficiency & shortens system life Dirty Filter or Evaporator Coil:Others things that can result in diminished air flow are: collapsed duct work, bad blower motor and low refrigerant charge. This will cause the evaporator coil and suction line to freeze.  Ask the experts:  Cleaning blowers and coils can add up to 30% increase in air flow, prolongs systems life and greatly reduces energy consumption. …supplies low voltage to heating and cooling control circuitsWhen a transformer fails, it is almost always an indication of further system failure.  Ask the experts: Be sure to mention any new construction or remodeling to your service professional.  (A nail or screw inadvertently driven into a wall may be the cause of a short in thermostat wiring. …is the heart of your system Heat pumps & AC units move heat by circulating refrigerant through indoor and outdoor coils at different pressures.  
Changing a shorted or “burned out” compressor involves: Ask the experts:  Anytime a compressor fails, it is a good idea to consider a new system.  See tips for buying a new air conditioner …device that regulates the flow of refrigerant into the heat absorbing coil Ask the experts: A bad TXV may mean it’s time to consider a new system. … controls heating & amp; cooling systems and allows the indoor fan to run continuously or intermittentlyWhen a thermostat fails, it can be an indication of further system problems.  Ask the experts:  When your thermostat needs to be replaced, it is wise to consider a programmable touch screen type to reduce energy consumption. …designed to prevent costly water damage The EZ Trap Safety Switch is designed to prevent costly water damage by shutting off your system any time the condensate drain line becomes plugged or blocked.  The clear p-trap and brush are designed to allow us to see any blockage & allow access to clean out the trap easily.