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4. When cooling selector reaches zero (0) motor will stop and cooling indicator will turn off indicating drying cycle is finished. Coin Operated Tumbler 1. Set temperature selector to HIGH. 2. Insert required amount of coins. 3. Press and hold in Push-to-Start Button for approximately three (3) seconds. Motor will start and heat system will turn on. 4. Near end of cycle a preset 2 1/2 minute cool down cycle will start. 5. When metered time expires, motor will stop indicating drying cycle is finished. Electronic Control Tumbler Tumbler comes equipped with Electronic Control. Electronic Control gives owner a variety of programming options. To learn how to use Electronic Control, consult supplemental manual. M412616 51 NOTES 52 M412616 SECTION III Adjustments MAIN GAS BURNER AIR SHUTTER (All Gas Models) NOTICE: Both air inlet shutters on burner must be adjusted so sufficient air is metered into system for proper combustion and maximum efficiency. Before adjusting inlet shutters be sure that all lint is removed from lint compartment and lint screen. Air shutter adjustments will vary from location to location and will depend on vent system, number of units installed, make-up air and line gas pressure. Opening shutter increases amount of primary air supplied to burner while closing shutter decreases primary air supply. Adjust air shutter as follows: 1. Unlock and open access door. 2. Start tumbler and check flame pattern. Correct air and gas mixture is indicated if flame pattern is primarily blue, with small yellow tips, and bends to right of heater section. (See Figure 29.) Too little air is indicated if flame is yellow, lazy and smokey. 3. To adjust air shutter, loosen air inlet shutter adjusting screw, see Figure 29. 4. Open or close air shutter as necessary to obtain proper flame intensity. 5. After air shutter is adjusted for proper flame, tighten air shutter adjusting screw securely. Control panel may have to be removed temporarily to loosen air shutter screws to turn shutter. 6. If shutter is correctly adjusted, but flame pattern is straight up, (Figure 29), insufficient primary air is flowing through tumbler and airflow switch is improperly set. A flame pattern that flares to right and left (Figure 29) indicates no air is flowing through tumbler. AIR FLOW SWITCH (Gas and Electric Models, see Figure 30) Air flow switch is set at factory for proper operation. Steam models do not have an air flow switch. However, if there is a problem with airflow switch, it should be adjusted as follows: NOTICE: Control panel must be in place and access door closed before attempting to adjust air flow switch. IMPORTANT: Air flow switch disc must remain closed during operation. If it opens and closes during drying cycle, this indicates insufficient air flow through tumbler. T047SE3AT048SE3A T049SE3A PROPER AIR FLOW INSUFFICIENT AIR FLOW NO AIR FLOW AIR SHUTTER ADJUSTING SCREWS AIR SHUTTER ADJUSTING SCREWS AIR SHUTTER ADJUSTING SCREWS NOTE: Burner configuration will differ between the 30, 50 and 75 pound tumblers, but flame pattern will be as shown. Figure 29 M412616 53 Electric Models: If switch remains open, or pops open and closed during cycle, heating system will shut off. Cylinder and fan will continue to operate even though air flow switch is malfunctioning. Gas Models: If switch remains open, entire unit will shut down when Push-to-start button is released. Once tumbler starts and continues to run, a loss of air flow, air flow switch jams or a bouncing air flow switch will shut entire tumbler down. . WARNING To reduce the risk of fire, air flow switch operation may be affected by a clogged lint screen, lack of make-up air, obstructions in the vertical recirculation stack or in the customer installed main or collector ducts. These conditions must be checked and necessary corrections made before adjusting air flow switch. Always adjust air flow at installation. Air flow switch operation is controlled by counterweight position on shaft. Moving counterweight either increases or decreases air flow switch sensitivity. Cou...

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