KAC-55. TECHNICAL EDUCATION Downdraft Vent Hood Wiring Diagram Theory Of Operation JOB AID W

Transcription

1 KAC-55 TECHNICAL EDUCATION Downdraft Vent Hood Wiring Diagram Theory Of Operation KITCHENAID JENN-AIR UNBRANDED KXD4630YSS0 JXD7030YS0 UXD8630DYS0 KXD4636YSS0 JXD7036YS0 UXD8636DYS0 KXD4736YSS0 JOB AID W

2 FORWARD This Down Draft Vent Hood job aid provides the In- Home Service Professional with information on wiring diagrams and the theory of how the downdraft vent hood operates. For specific information on the model being serviced, refer to the literature supplied with the vent hood. Always use the Wiring Diagram supplied with the product when servicing the unit. GOALS AND OBJECTIVES The goal of this Job Aid is to provide information that will enable the In-Home Service Professional to properly diagnose malfunctions of the downdraft vent hood. A DownDraft Vent Hood Service video is available and accessable in the TABLE OF CONTENTS. The service video is also available on the Service Matters site The objective of this Job Aid is to: Provide the In-Home Service Professional with wiring diagrams and strip circuit information that will make servicing the downdraft vent hood easier. WHIRLPOOL CORPORATION assumes no responsibility for any repairs made on our products by anyone other than authorized In-Home Service Professionals. ii DownDraft Vent Hood Copyright 2014, Whirlpool Corporation, Benton Harbor, MI 49022

3 DOWNDRAFT VENT HOOD JOB AID GENERAL TABLE OF CONTENTS SAFETY INFORMATION COMPONENT PARTS LAYOUT PRODUCT WIRING DIAGRAM STRIP CIRCUITS AND THEORY OF OPERATION COMPLETE DOWNDRAFT SERVICE VIDEO... (CLICK ON ICON) Section 1...Safety and Installation Section 2...Customer Instruct Section 3...Theory of Operation Section 4...Component Access and Testing Section 5...Component Access and Testing #2 DownDraft Vent Hood iii

4 iv DownDraft Vent Hood NOTES

5 Section 1: General Information This section provides general safety, parts, wiring diagram and theory of operation for the Downdraft Vent Hood Safety Information Component Layout Product Wiring Diagram Strip Circuits and Theory of Operation Complete Service Video - Click on Icon Downdraft Vent Hood 1-1

6 1-2 DownDraft Vent Hood

7 Downdraft Vent Hood 1-3

8 Downdraft Vent Hood Component layout This Illustration shows the general location of all operational components on the downdraft vent hood. The components are numbered as shown on the product wiring diagram (next page). The wiring diagram (shown on the next page) is available on the unit and also printed in the Installation Instructions with the product. This isn t a traditional Whirlpool diagram and can be a little difficult understanding whats going on as switches open and close. 1-4 DownDraft Vent Hood

9 Shown on the Product Wiring Diagram is the component parts layout chart and within the wiring diagram the electrical components are numbered per the component chart. You can also see the adjustable blower speed switch testing information and a motor specification chart. We can come back to this diagram later if necessary, but let s look at something a little more helpful. Downdraft Vent Hood 1-5

10 Downdraft Vent Hood diagram different format This is a complete picture of the wiring diagram on the previous page but in a different format. This circuit shows the vent sitting idle in the down position just like the product wiring diagram. We numbered the electrical components on the diagram per the component chart on the product wiring diagram. We did a few other things to provide some necessary information that you couldn t pick up from the product wiring diagram. One important thing we needed to show is that the Plenum UP Limit switch and the exhaust Blower Motor switch are mechanically connected as illustrated by the black line. We ll show you why this is important a little later. 1-6 DownDraft Vent Hood

11 The other thing that is important is what happens when the Pushbutton is pressed. A complete 120 VAC circuit is created through the two filter switches, the pushbutton (as it is being held down by the operator), and the motor to the neutral side of the line. As you notice with this circuit, until the Plenum DOWN Limit switch is closed the only power to the motor is through the pushbutton switch. Once that pushbutton is released, the motor stops. So why is it so important to hold the pushbutton switch down for 2-3 seconds? As the motor starts, it begins to turn a cam located on the motor shaft. As this cam turns it takes about 2-3 seconds to contact the Plenum Down limit switch which in turn closes the switch contacts and sets up a complete circuit through the two filter switches and the two plenum limit switches. Now when the pushbutton is released an alternate circuit through the motor is set up and the plenum starts to rise. Here is the operating circuit once the pushbutton is released. At this point the plenum motor is powered through the FILTER SWITCHES and the PLENUM LIMIT SWITCHES and continues to raise the plenum. As soon as the plenum reaches its upper limit the Plenum UP Limit switch opens and disconnects power to the plenum motor circuit. Downdraft Vent Hood 1-7

12 As soon as the plenum rises to it fully open position, the Plenum UP Limit switch will change position and open the circuit to the motor. The only time we need the exhaust blower motor to run is when the plenum is fully open. So as the Up Plenum limit switch opens the circuit stops the plenum drive motor, the exhaust blower motor switch closes and starts to pull smoke and odors from the cooktop. (This is where the mechanically connected switches operate together). The Exhaust Blower Motor Switch is mounted on top of the Up plenum limit switch and they are both activated at the exact same time (plenum switch opens and exhaust motor switches closes). Once the cycle is complete, the user again presses the pushbutton to start too complete a circuit through the plenum drive motor, which begins to turn and close the UP LIMIT switch and eventually close the plenum. As the plenum UP limit switch is activated to close and complete a circuit to the motor, the exhaust blower motor switch opens and stops the exhaust motor circuit. 1-8 DownDraft Vent Hood

13 PRODUCT SPECIFICATIONS & WARRANTY INFORMATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR WHIRLPOOL PRODUCTS: FOR KITCHENAID PRODUCTS: FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER S HOME CALL: THE TECHNICAL ASSISTANCE LINE: HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN AUTHORIZED IN-HOME SERVICE PROFESSIONAL FOR LITERATURE ORDERS (CUSTOMER EXPERIENCE CENTER): PHONE: FOR TECHNICAL INFORMATION AND SERVICE POINTERS: IN CANADA: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER S HOME CALL: THE TECHNICAL ASSISTANCE LINE: HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN AUTHORIZED IN-HOME SERVICE PROFESSIONAL

14