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Air flow switch operation is controlled by counterweight position on shaft. Moving counterweight either increases or decreases air flow switch sensitivity. Counterweight should be adjusted so air flow will force disc away from cabinet when lint panel is opened 6 inches (15.24 cm) with a full load. Adjust air flow switch as follows: 1. Load tumbler. NOTE: This adjustment is much faster to make with one person opening lint panel in front and another adjusting the counterweight in rear of tumbler. 2. Start tumbler. Open lint panel 6 inches (15.24 cm). Airflow disc should move away from cabinet, opening switch contacts and shutting off heat system. This indicates proper operation and proper adjustment. 3. If switch is not opening as described in step “2”, it should be adjusted so it is MORE sensitive. Depress spring clip and move counterweight toward disc. Retest by opening lint panel and continue moving counterweight toward disc until switch operates as described in step “2”. 4. If switch opens BEFORE lint panel is opened proper distance, step “2”, it should be adjusted so it is LESS sensitive. Depress spring clip and move counterweight away from disc. Retest by opening lint panel and continue moving counterweight away from disc until switch operates as described in step “2”. Figure 30 T041IE3A AIR FLOW SWITCH COUNTERWEIGHT SPRING CLIP DISC SWITCH LEVER MOUNTING BRACKET REAR PANEL OF TUMBLER AIR FLOW SWITCH VANE LEVER AIR DISC COUNTERWEIGHT SWITCH LEVER SWITCH ADJUSTING SCREWS SCREW SPRING CLIP 54 M412616 LOADING DOOR SWITCH Loading door switch turns off tumbler any time loading door is opened. To adjust loading door switch, follow these steps: 1. Start tumbler following operating instructions which accompanied it. 2. Slowly open loading door. Cylinder and heating system should stop when door is open 3" (7.5 cm) plus or minus 1/4" (0.635 cm). 3. Slowly close loading door. Loading door switch should close with an audible “click” when loading door is closed 3" (7.5 cm) plus or minus 1/4" (0.635 cm). 4. If loading door switch does not close when loading door is closed 3" (7.5 cm) plus or minus 1/4" (0.635 cm): a. Close loading door completely. b. Loosen lower screw on switch coupler and rotate switch coupler COUNTERCLOCKWISE until it stops. c. Tighten lower screw on switch coupler. d. Return to step 1 to verify loading door switch operation. LOADING DOOR SWITCH SWITCH COUPLER T275IE1A Figure 31 CYLINDER DOOR STRIKE The door strike must be adjusted to have sufficient tension to hold loading door closed against force of load tumbling against it. Proper adjustment is when 8 to 15 pounds (35.6 N - 66.7 N) pull is required to open door. To adjust, open door, loosen jamnut and turn door strike screw in or out as required. Retighten jamnut. T048IE1A DOOR STRIKE DOOR LATCH ACORN NUT Figure 32 M412616 55 56 M412616 DRIVE V-BELT To reduce the risk of serious injury or death, disconnect power to the tumbler before performing this operation. WARNING 2. To adjust belt tension, loosen adjusting bolt holding idler housing assembly to housing support. 3. To tighten V-belt: a. Loosen lower nut on adjusting bolt. b. Turn bolt up until belt has proper tension. c. Tighten upper and lower nut or adjusting bolt. 4. To loosen V-belt: a. Loosen top nut on adjusting bolt. b. Turn bolt down until belt has proper tension. c. Tighten upper and lower nut or adjusting bolt. 5. Replace guard on rear of tumbler. 6. Upper belt requires no adjustment since it is selfadjusting. Proper tension is when belt can be depressed approximately ... inch (1.27 cm) by applying light thumb pressure at a point midway between the sheave and motor pulley. 1. Remove guard from rear of tumbler. To reduce the risk of serious injury or death, guard MUST be installed on rear of tumbler after belt adjustment is made. WARNING Figure 33 T278IE3A POLY V-BELT (Poly V-belt is self-adjusting) IDLER HOUSING ASSEMBLY DRIVE V-BELT IDLER HOUSING BOLTS (2) ADJUSTING BOLT SECTION IV Preventive Maintenance Instructions DAILY 1. Make certain drying cycle has ended. 6. Ensure lin...

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