SPEED QUEEN SCB50EG (01) PDF DOCUMENT

It is crucial to adhere to the manufacturer’s instructions for installation, maintenance, and operation. Failure to do so can lead to conditions that may cause serious injury, death, or property damage. Always be aware of the following:

General Operation:

• If the SPEED QUEEN SCB50EG tumbler does not perform according to instructions, do not operate it. Immediately disconnect the electrical service, shut off the gas supply, and contact an authorized service representative. All service and repairs must be performed by authorized personnel only.

• Read all instructions before use.

• Do not tamper with controls or bypass any safety devices.

• Always follow the fabric care instructions provided by the garment manufacturer.

• Remove laundry immediately after the tumbler cycle stops.

• Never reach into the tumbler if the cylinder is revolving.

• To prevent public access to the rear of tumblers and reduce the risk of serious injury, install lockable doors.

Flammable Materials:

To avoid creating flammable vapors that could explode, ignite, or cause corrosive damage, DO NOT dry the following materials in the SPEED QUEEN SCB50EG:

• Articles that have been cleaned, soaked, washed, or spotted with gasoline, dry cleaning solvents, or other flammable/explosive substances.

• Plastics or articles containing foam rubber or similarly textured rubber-like materials.

• Articles with traces of flammable substances like cooking oil, machine oil, flammable chemicals, or thinner.

• Articles containing wax or cleaning chemicals.

• Fiberglass curtains or draperies, unless the label specifically permits it.

To reduce the risk of fire, electric shock, serious injury, or death when using your SPEED QUEEN SCB50EG dryer, follow these basic precautions:

1. Do not allow children to play on or in the tumbler. Close supervision is necessary when the tumbler is used near children.

2. Before the tumbler is removed from service or discarded, remove the door to the drying compartment.

3. Do not install or store the tumbler where it will be exposed to water and/or weather.

4. Run the tumbler with a load before putting it into service for the first time.

5. Always disconnect the electrical power to the tumbler before servicing. Disconnect power by shutting off the appropriate circuit breaker or fuse and by turning off the disconnect switch located on the rear of the tumbler.

6. Activation of the emergency stop switch stops all machine control circuit functions but does not remove all electrical power from the machine.

NOTE: This drying tumbler produces sound rated at 65 dbA.

The warning labels on your SPEED QUEEN SCB50EG provide important safety information:

• A clothes dryer produces combustible lint. The tumbler MUST BE EXHAUSTED OUTDOORS.

• Do not touch rotating parts.

• Do not touch surfaces until they have cooled.

• Do not operate without guards in place.

• Disconnect electrical power before servicing.

• To reduce the risk of accumulating unsafe concentrations of combustion gases, the tumbler MUST BE EXHAUSTED OUTDOORS.

The main warning label advises:

– DO NOT put articles soiled with flammable liquids or cleaning solvents in the dryer.

– DO NOT store or use flammable liquids near this appliance.

– DO NOT spray or store aerosols in the vicinity of this appliance.

– Dryer must be exhausted outdoors and the area around it must be free of lint.

– DO NOT dry articles containing foam rubber, plastic, or similar materials.

– Use for drying water-washed fabrics only.

– DO NOT put articles soiled with vegetable or cooking oil in the dryer, as these oils may not be removed during washing and could cause the fabric to catch fire by itself.

– DO NOT reach into the dryer until all moving parts have stopped.

– DO NOT let children play in the dryer.

The model and serial numbers for your SPEED QUEEN SCB50EG tumbler will be found on the nameplate. This nameplate is located either on the rear of the tumbler or underneath the door hinge.

The reversing motor sizes for 50 lb. tumblers are as follows:

Upon delivery, visually inspect the crate, carton, and parts for any visible shipping damage. If there are signs of damage, have the carrier note the condition on the shipping papers before signing the receipt, or inform the carrier as soon as possible. A written claim should be filed with the carrier immediately for any damaged or missing articles.

After removing the crate and protective cover, check the items against the packing list.

IMPORTANT: Remove the shipping tape from the two back draft dampers located in the exhaust thimble.

Materials Required (Obtain Locally):

• One circuit breaker.

• For Gas Drying Tumblers: One gas shut-off valve for the gas service line to each tumbler.

Facilities Required:

• Floor: The tumbler may be installed on any level floor capable of supporting 100 pounds per square foot (488 kg/m²). Floor coverings like carpeting or tile should be removed.

• Layout: Whenever possible, install the tumbler along an outside wall to keep the exhaust duct length to a minimum and allow for easy access to make-up air. The construction must not block airflow at the top rear of the tumbler, as this would prevent an adequate air supply to the combustion chamber.

• Venting: For maximum efficiency and minimal lint accumulation, tumbler air must be exhausted to the outdoors by the shortest possible route.

• Make-Up Air: Provisions for make-up air are required to replace the air exhausted by the tumbler.

Properly sized exhaust ducts are essential for the operation of the SPEED QUEEN SCB50EG. Improperly sized or assembled ductwork can cause excess back pressure, leading to slow drying, lint collection in the duct, lint blowing back into the room, and an increased fire hazard.

• Duct Construction: Exhaust ducts must be made of sheet metal or other noncombustible material, with strength and corrosion resistance equivalent to galvanized sheet steel not less than 0.0195 inches (0.495 mm) thick. All elbows should be sweep-type. Do not use sheet metal screws to join vent sections, as interior surfaces must be smooth to reduce lint accumulation.

• Individual Venting: It is preferred to exhaust each tumbler individually to the outdoors. The cross-sectional area of the installed venting must never be less than the cross area of the tumbler’s exhaust thimble. The maximum allowable length of venting is 14 feet (4.3 m) plus two 90° elbows or equivalent.

• Equivalent Venting Length:

• Collector Venting: A main collector duct may be used if sized correctly. The duct must be tapered, and individual tumbler ducts must enter the collector duct at a 45° angle in the direction of airflow. Never connect a tumbler duct at a 90° angle.

• Airflow: With the tumbler in operation, airflow at any point in the duct must be at least 1200 feet (366 m) per minute to ensure lint remains airborne.

WARNING: To reduce the risk of fire and accumulation of combustible gases, DO NOT exhaust tumbler air into a window well, gas vent, chimney, or an enclosed, unventilated area such as an attic, wall, ceiling, crawl space, or concealed space of a building.

The SPEED QUEEN SCB50EG is a forced-air exhausted appliance and requires provisions for make-up air to replace the air it exhausts.

• The manufacturer’s recommended make-up air opening for each 50-pound tumbler is 144 square inches (928 sq. cm).

• At a minimum, tumblers must have at least 1 square inch (2.54 cm²) of opening for every 1000 BTU/hr of input rating for proper combustion.

• Protective louvers in an opening to the outdoors can reduce air movement by approximately 40%, so the opening size must be increased to compensate for the area taken up by louvers.

• If the make-up air comes from a room also containing gas-fired hot water heaters or other gravity-vented appliances, the opening must be large enough to prevent downdrafts in those vents when all tumblers are operating.

WARNING: If dry cleaning machines are in the same area as the tumbler, the tumbler make-up air must come from a source free of solvent gases and vapors. Solvent gases and vapors create corrosive acids when drawn through the tumbler’s heater.

All electrical connections should be made by a qualified electrician. The SPEED QUEEN SCB50EG is a 50 Pound Gas model.

Requirements Table:

Gas and High Pressure Steam Drying Tumblers Wiring:

Grounding Instructions: The drying tumbler must be grounded. In the event of a malfunction or breakdown, grounding reduces the risk of electric shock by providing a path of least resistance for electric current. The tumbler must be connected to a grounded metal, permanent wiring system, or an equipment grounding conductor must be run with the circuit conductors and connected to the PE Busbar.

WARNING: To reduce the risk of fire and electric shock, check with a qualified serviceman for proper grounding procedures. An improper connection of the equipment grounding conductor can result in a risk of electric shock. If the electrical supply is coming from a three-phase service, DO NOT connect a “Stinger Leg” to a single-phase machine.

WARNING: All electrical connections should be made by a qualified electrician. To reduce the risk of electrical shock, de-energize the electrical circuit before making any connections. Never attempt to connect a live circuit.

Follow these steps to connect electrical service to the tumbler:

1. Install a circuit breaker as close to the tumbler as possible. If installing multiple tumblers, provide a separate circuit breaker for each one for maintenance purposes.

2. Perform the wiring connections:

a. Connect conduit-encased leads to the circuit breaker.

b. Turn the disconnect switch on the tumbler to “off” and open the junction box.

c. Insert the conduit-encased leads through one of the knockout holes in the junction box.

d. Connect the wire leads to the disconnect switch. For 1 Phase Units (like the SCB50EG), connect one lead to the top left connection point and the other lead to the top right connection point.

e. Connect a ground wire to the PE Busbar in the junction box.

3. For three-phase units, you would check the phase sequence. This step is not applicable to the standard single-phase SCB50EG.

4. Close the junction box cover and turn the disconnect switch to “on”.

Positioning:

The tumbler can be removed from its shipping skid before or after moving to its installation location. To remove it from the skid, unscrew the four shipping capscrews (one at each corner). The lint panel door will need to be removed to access the two front capscrews.

NOTE: Do not throw these four capscrews away; they are the leveling legs.

Screw the four leveling legs back into the level adjusting fittings from the top. Slide the tumbler to its permanent location. Keep the tumbler as close to the floor as possible. All four legs must rest firmly on the floor to evenly distribute the weight and ensure the tumbler does not rock.

Leveling:

The SPEED QUEEN SCB50EG should be leveled within 1/8 inch (3.2 mm) from front to rear and 1/8 inch (3.2 mm) from side to side.

• To check the front-to-rear level, rotate the clothes cylinder until one rib is at the very bottom, then place a level on that bottom rib.

• To check the side-to-side level, place a level on the front and rear of the top panel.

Gas Requirements:

• The size of the gas service pipe depends on many variables (length, tees, etc.). Specific pipe size information should be obtained from your gas supplier. Refer to the pipe size chart for general data.

• It is important that equal gas pressure is maintained at all tumbler gas connections. This can be best achieved by installing a one-inch pipe gas loop if multiple units are installed.

• Natural Gas: Must be supplied at 6-1/2″ ± 1-1/2″ water column pressure (1.62 ± .37 kPa).

• L.P. Gas: Must be supplied at 11″ ± .3″ water column pressure (2.74 ± .07 kPa). A vent to the outdoors must be provided in the room where the tumbler is installed.

Gas Connections:

1. Before connecting, verify the gas service is the same as specified on the tumbler’s nameplate. If not, do not connect; the burner orifice and gas valve will need to be converted by authorized personnel.

2. Purge air and sediment from the gas service line before connecting it loosely to the tumbler. Purge the remaining air until the odor of gas is detected, then tighten the connection.

3. Use pipe compound resistant to the actions of L.P. gas on all pipe threads.

WARNING: Check all pipe connections (internal and external) for gas leaks using a soapy solution. To reduce the risk of explosion or fire, DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS. Gas connections should be checked annually for leakage.

Pressure Testing Warnings:

• The tumbler and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that system at pressures exceeding 1/2 psig (3.45 kPa).

• The tumbler must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pressure testing at a pressure equal to or less than 1/2 psig (3.45 kPa).

The following table shows the required pipe size for Natural Gas (.64 Specific Gravity) at 6½ ± 1½ Inch Water Column Pressure, based on total BTU/hr load and equivalent pipe length. This table is based on a 0.3″ water column pressure drop.

Lighting the System:

1. Turn the machine disconnect switch, located on the rear of the tumbler, to the “on” position.

2. Turn the gas shut-off valve, located on the rear of the tumbler, to the “on” position (the gas valve handle should be parallel with the gas line).

3. Start the tumbler, following the operating instructions that accompanied it.

NOTE: The ignition control circuitry will first verify the airflow switch is open. Once the cylinder motor starts, air flowing through the tumbler will close the airflow switch. The tumbler will then purge air for 18 seconds. Ignition will then start with a three-second release of gas from the gas valve and sparking of the ignitor. If ignition does not occur during this first three seconds, the ignition control will “lockout,” causing the gas valve to close and a red button on the ignition control to illuminate.

To Reset a Lockout:

To reset the ignition system after a lockout, open the access door and press the red button on the ignition control. Close and lock the access door, verify that the gas shut-off valve is in the “on” position, and return to step 3 above to restart the tumbler.

Shutting Down the System:

If the tumbler will not start, or for shutdown, remove it from service by:

• Turning the machine disconnect switch, located on the rear of the tumbler, to the “off” position.

• Turning the gas shut-off valve, located on the rear of the tumbler, to the “off” position (the gas valve handle should be at a right angle to the gas line).

Accessory timing cams, which allow for different cycle lengths, are available. To figure out time increments, use the formula: Timer Motor Speed (60) divided by the number of pins on the cam = Cycle Length (minutes).

Removal of Existing Timing Cam:

1. Rotate the cam by hand until the “V” notch lines up beneath one of the ratchet teeth.

2. Insert a narrow screwdriver under the nylon cam, close to the clock shaft. Lift gently off the shaft, ensuring pressure is directed upward and the “V” notch clears the ratchet tooth.

Installation of New Timing Cam:

1. Insert the drive into the new timing cam, with the wide prong in the wide hole of the cam.

2. Position the timing cam and drive fork over the timer shaft, aligning the timer flat with the drive fork and the “V” notch with one of the ratchet teeth.

3. Press the timing cam down firmly to seat it onto the motor shaft.

4. Remove all accumulated time by turning the cam counterclockwise until the switch shuts off. Apply moderate clockwise pressure to the fully seated timing cam and drive against the timing motor shaft. The meter must be advanced electrically for one full cycle before an accurate measure of time can be made.

Before putting the tumbler into full service, perform these checks:

1. Remove or open all panels and inspect accessible bolts, nuts, screws, terminals, and fittings for security.

2. Check belt tension and adjust if necessary.

3. Energize the electrical circuit to the tumbler circuit breaker and turn on the tumbler disconnect switch.

4. Turn on the gas supply at the manual gas shut-off valve (gas models only). The handle should be parallel with the gas supply line when “ON”.

5. Press and hold the Push-to-Start Button for approximately three (3) seconds. Release the button and open the cylinder door. The cylinder should stop rotating within seven (7) seconds after the door is opened 3″ (7.5 cm) plus or minus 1/4″ (0.635 cm). If it doesn’t stop, adjust the cylinder door interlock.

6. Load the tumbler with clothes or clean rags.

7. Start the tumbler and check the burner flame. Adjust the gas inlet shutter if necessary.

8. Check the airflow switch operation by opening the lint panel. The heating system should shut off when the lint panel is opened approximately 1-1/2″ (3.81 cm). Adjust if necessary.

9. Turn off the tumbler.

10. Check the airflow switch operation again by opening the lint panel with a full load. The heating system should shut off when the lint panel is opened approximately 6″ (15.24 cm).

Follow these steps for a final operating check and normal use:

1. Set the temperature selector to HIGH.

2. Insert the required amount of coins.

3. Press and hold the Push-to-Start Button for approximately three (3) seconds. The motor will start, and the heat system will turn on.

4. Near the end of the cycle, a preset 2 1/2 minute cool-down cycle will start.

5. When the metered time expires, the motor will stop, indicating the drying cycle is finished.

NOTICE: Both air inlet shutters on the burner must be adjusted for proper combustion and maximum efficiency. Before adjusting, ensure all lint is removed from the lint compartment and lint screen.

Adjust the air shutter as follows:

1. Unlock and open the access door.

2. Start the tumbler and check the flame pattern. A correct air and gas mixture is indicated if the flame pattern is primarily blue with small yellow tips and bends to the right of the heater section. If the flame is yellow, lazy, and smoky, it indicates too little air.

3. To adjust, loosen the air inlet shutter adjusting screw.

4. Open or close the air shutter as necessary to obtain the proper flame intensity.

5. After adjustment, tighten the air shutter adjusting screw securely.

6. If the shutter is correctly adjusted but the flame pattern is straight up, it indicates insufficient primary air is flowing through the tumbler and the airflow switch is improperly set. A flame pattern that flares to the right and left indicates no air is flowing through the tumbler.

WARNING: To reduce the risk of fire, be aware that airflow switch operation can be affected by a clogged lint screen, lack of make-up air, or obstructions in the ductwork. These conditions must be checked and corrected before adjusting the switch.

NOTICE: The control panel must be in place and the access door closed before attempting to adjust the airflow switch.

The counterweight should be adjusted so that airflow will force the disc away from the cabinet when the lint panel is opened 6 inches (15.24 cm) with a full load. Adjust as follows:

1. Load the tumbler.

2. Start the tumbler. Open the lint panel 6 inches (15.24 cm). The airflow disc should move away from the cabinet, opening the switch contacts and shutting off the heat system. This indicates proper operation.

3. If the switch does not open as described, it needs to be MORE sensitive. Depress the spring clip and move the counterweight toward the disc. Retest by opening the lint panel and continue moving the counterweight toward the disc until it operates correctly.

4. If the switch opens BEFORE the lint panel is opened 6 inches, it needs to be LESS sensitive. Depress the spring clip and move the counterweight away from the disc. Retest and continue moving the counterweight away from the disc until it operates correctly.

Loading Door Switch Adjustment:

The loading door switch turns off the tumbler when the door is opened. To adjust:

1. Start the tumbler.

2. Slowly open the loading door. The cylinder and heating system should stop when the door is open 3″ (7.5 cm) plus or minus 1/4″ (0.635 cm).

3. Slowly close the loading door. The switch should close with an audible “click” when the door is closed 3″ (7.5 cm) plus or minus 1/4″ (0.635 cm).

4. If the switch does not close at the correct point:

a. Close the loading door completely.

b. Loosen the lower screw on the switch coupler and rotate the coupler COUNTERCLOCKWISE until it stops.

c. Tighten the lower screw on the switch coupler.

d. Return to step 1 to verify the new adjustment.

Cylinder Door Strike Adjustment:

The door strike must have sufficient tension to hold the door closed against the force of the tumbling load. Proper adjustment is when 8 to 15 pounds (35.6 N – 66.7 N) of pull is required to open the door.

To adjust, open the door, loosen the jamnut on the door strike, and turn the door strike screw in or out as required. Retighten the jamnut.

WARNING: To reduce the risk of serious injury or death, disconnect power to the tumbler before performing this operation. The guard MUST be re-installed on the rear of the tumbler after the adjustment is made.

Proper tension is when the belt can be depressed approximately 1/2 inch (1.27 cm) with light thumb pressure at a point midway between the sheave and motor pulley. The upper Poly V-belt is self-adjusting and requires no adjustment.

1. Remove the guard from the rear of the tumbler.

2. To adjust belt tension, loosen the adjusting bolt that holds the idler housing assembly to the housing support.

3. To tighten the V-belt:

a. Loosen the lower nut on the adjusting bolt.

b. Turn the bolt up until the belt has proper tension.

c. Tighten the upper and lower nut or adjusting bolt.

4. To loosen the V-belt:

a. Loosen the top nut on the adjusting bolt.

b. Turn the bolt down until the belt has proper tension.

c. Tighten the upper and lower nut or adjusting bolt.

5. Replace the guard on the rear of the tumbler.

1. Make certain the drying cycle has ended.

2. Open the loading door.

3. Unlock and remove the lint panel.

4. Remove accumulated lint from the lint compartment. Lint left in the compartment will be drawn back onto the screen and restrict air circulation.

5. Clean lint from the lint screen. If the lint screen is torn, replace it immediately. A torn screen allows lint to flow into the ductwork system, restricting air circulation.

6. Ensure the lint screen covers the entire opening in the lint screen hood. Gaps will allow lint to flow into the ductwork.

7. Wipe any accumulated lint off the thermostat sensing probe. Lint buildup on the probe will cause the tumbler to overheat.

8. Replace and securely lock the lint panel.

1. Perform the daily cleaning of accumulated lint.

2. Deactivate the electrical circuit by turning off the electrical disconnect switch on the rear of the tumbler.

3. Remove the exhaust duct from the rear of the tumbler and clean out all accumulated lint.

4. Reinstall the exhaust duct.

5. Remove the bottom cover from the vertical exhaust duct and clean out all accumulated lint.

6. Reinstall the vertical exhaust duct cover.

7. Inspect the entire ductwork assembly and clean out all accumulated lint.

8. Energize the electrical circuit to the tumbler by turning on the electrical disconnect switch on the rear of the tumbler.

1. Deactivate the electrical circuit by turning off the disconnect switch on the rear of the tumbler.

2. Perform daily cleaning of accumulated lint.

3. Perform monthly inspection and cleaning of accumulated lint.

4. Clean accumulated lint and other debris from the front and back motor air vents.

5. Shut off the gas supply at the manual gas shut-off valve. The handle should be at a 90° angle to the gas supply line when in the “OFF” position.

6. Remove the screws holding the rear drive guard to the back of the tumbler.

7. Inspect belts for wear and proper tension (refer to the Adjustments section).

8. Reinstall the rear drive guard to the back of the tumbler.

9. Energize the electrical circuit by turning on the electrical disconnect switch.

10. Turn on the gas supply at the manual gas shut-off valve. The handle should be parallel with the gas supply line when in the “ON” position.

1. Deactivate the electrical circuit by turning off the disconnect switch on the rear of the tumbler.

2. Perform daily cleaning of accumulated lint.

3. Perform monthly inspection and cleaning of accumulated lint.

4. Perform quarterly inspection and cleaning of accumulated lint.

5. Remove or open all panels and check accessible bolts, nuts, screws, terminals, and fittings for tightness.

6. Shut off the gas supply at the manual gas shut-off valve. The handle should be at a 90° angle to the gas supply line (“OFF” position).

7. Unlock and open the service panel and inspect gas connections for evidence of leakage or loose connections. NOTE: Spraying a mild solution of soap and water on joints will cause bubbles to appear on any leaking connections.

8. Close and securely lock the service panel.

9. Open the electrical junction box cover and inspect all electrical and grounding connections for security. Tighten any loose electrical connections.

10. Close the electrical junction box cover and energize the electrical circuit by turning on the electrical disconnect switch.

11. Turn on the gas supply at the manual gas shut-off valve. The handle should be parallel with the gas supply line (“ON” position).

Quarterly Maintenance:

• Clean air vents on drive motor.

• Clean exhaust ducts.

• Check flow of combustion air.

• Check flow of ventilation air.

• Check belt tension.

Biannual Maintenance:

• Check for loose nuts.

• Check for loose bolts.

• Check for loose screws.

• Check for loose gas connections.

• Check for loose electrical connections.

To take the machine out of service, follow these steps:

1. Turn off the electrical supply external to the machine.

2. Turn off the electrical disconnect on the machine.

3. Turn off the gas supply external to the machine.

4. Turn off the manual gas shut-off valve on the machine.

5. For steam models, turn off the steam supply external to the machine.

6. Remove all electric, gas, and steam connections.