To Replace Filter Dust Bag, Bulb Replacement

CAUTION—Wood Floors, Soft (Vinyl, Asphalt Tile, etc.) Floor Surfaces and Polished Floor Finishes

Use floor and floor finish manufacturer’s recommended methods of cleaning. The metal strip on the base of the cleaner could be damaged if used on concrete or abrasive surfaces, and, therefore, cause damage to wood floors, soft (vinyl, asphalt tile, etc.) floor surfaces and polished floor finishes. The roller brush may also scuff very soft finishes. Do not operate the unit while in the upright and locked position. Do not let the unit run while in any one stationary position for any period of time. Keep the unit moving while in operation.

Celoc® Hypo-Allergenic Filter System

The Celoc SMMSP outer bag of your vacuum cleaner is a high filtration medical material designed to filter the smallest of dust particles. For peak performance, the inside of the outer bag must be cleaned. Turned inside out, vacuum the inside of the outer bag or hand wash with warm water, and allow to air dry. The Celoc layered disposable inner dust bag must be replaced once a month even if it is not full. Change it more often if it is used in extremely dirty areas. Increase the cleaning power of your vacuum by changing the bag often.

To Replace Filter Dust Bag

WARNING: Unplug cord from electrical outlet before servicing.

BAG REMOVAL:

fig. 6 Unzip outer bag completely.

fig. 7 Pull bag cardboard collar to release bag dock door from

connector. Bag dock door will hinge downward.

fig. 8 Gently pull bag cardboard collar upward out of the bag dock. The dust seal will close automatically.

BAG INSTALLATION:

fig. 9 Slide the cardboard collar completely onto bag dock door.

fig. 10 Firmly push bag dock door with both thumbs on indication point until it snaps.

How to Replace a Worn Belt

WARNING: Unplug cord from electrical outlet before servicing.

fig. 11 Remove the replacement belt from the storage channel.

fig. 12 Remove the door by removing the hold down screw located on side of power head.

fig. 13 Slide the door forward by prying open with a screwdriver or coin. fig. 14 Remove the belt from the motor drive shaft and brush roll pulley.

fig. 15 Loop the new belt over the motor drive shaft. Place the opposite end of the belt on the brush roll pulley. Rotate the brush roll three (3) complete revolutions to ensure that no part of the belt is overhanging the end of the motor drive shaft.

fig. 13 Replace the door by sliding it into the groove at the bottom of the housing.

fig. 12 Replace the hold down screw and tighten.

To Adjust or Replace Brush

WARNING: Unplug cord from electrical outlet before servicing.

fig. 16 To determine if the brush is worn, place a firm straight edge across the nozzle opening. If brush bristles do not extend beyond baseplate, brush should be adjusted.

fig. 17 Remove the baseplate by removing 5 screws. fig. 18 Remove the belt and brush roll from the housing.

fig. 19 Rotate both bearing assemblies at ends of brush roll to show "OLD" and replace in the holding channels in the housing.

NOTE: The bearing assembly setting marked "OLD" has no ribs on the top of the assembly. The one marked "NEW" has several ribs. When rotating bearings, make sure both bearing assembly settings are the same and face up when replacing the brush roll.

fig. 16 Reassemble the belt and the baseplate and check bristle height above baseplate at each end of brush.

If a previous adjustment has already been made and bristle height does not extend above baseplate, a new brush assembly should be ordered.

IMPORTANT: Unless the brush is worn as indicated above, both bearings must be in the “NEW” position. When rotating, both bearings must be in the “OLD” position. Unmatched settings will cause damage to your machine.

Using an Oreck Fresh Air® Tab

fig. 20 Your ORECK XL vacuum cleaner has a special ORECK FRESH AIR® tab pocket. This light-colored pocket is located inside the vinyl bag in the area where the paper disposable bag attaches to the intake tube. Insert tablet in pocket if desired.

Bulb Replacement

WARNING: Unplug cord from electrical outlet before servicing.

fig. 21 Remove lamp housing by removing two (2) screws in the the top of the lamp housing. Pull burned out bulb from holder and replace with new bulb. Use only Oreck replacement parts.

Replace lamp housing by replacing two screws in the top of the lamp housing.

Stuffing or Blockage

IMPORTANT: On plush and new carpets, stuffing may occur inside the intake tube and the lower tube assembly. This is due to excessive fuzz and loose cuttings in the carpet. Stuffing could occur for the first few cleanings until all the loose material is removed. Due to the high efficiency of the cleaner, many older carpets will cause stuffing when the cleaner is first used on them. If your vacuum cleaner does not pick up properly, or makes unusual noise and the outer bag does not fluff up or balloon open, follow these steps:

WARNING: Unplug cord from electrical outlet before servicing.

fig. 22 Check for blockage at the mouth of the intake opening. If there is blockage, remove it with long-nose pliers, a screwdriver or coat hanger. If you cannot reach the blockage, remove baseplate (fig. 23).

fig. 24 If the blockage is not at the base, remove lower tube. Unhook retainer spring, releasing bottom of bag.

fig. 25 Twist lower collar counterclockwise to slide up. Pull tube out of fan housing.

fig. 26 Check for blockage. If blockage is in the tube, remove with a coat hanger.

fig. 27 If tube is not blocked, look into fan housing. Remove debris

with long-nose pliers, a screwdriver or coat hanger.

fig. 25 To reassemble, check O-ring on tube, and replace if damaged. Vacuum will not operate properly without the tube O-ring. Slide O-ring to approximately 2" from base of tube. Replace tube by first lining up slot at base of tube with inner tab inside fan housing. Then reinsert tube and push down until the tube is seated. Make sure O-ring is in place against fan housing opening. Replace and tighten collar until collar locking tabs are locked in place.

fig. 28 Make sure collar is not cross threaded on housing. Reattach bag spring (fig. 24).

fig. 29 Many times blockage occurs due to a full dust bag causing dirt to

back down the air flow system. When that happens, the blockage will be at the top of the system, starting in the area where the dust bag connects to the connector assembly.

NOTE: If the above actions do not correct the problem, contact an Oreck authorized service center or call the customer service center.

US: 1-800-989-3535 Canada: 1-888-676-7325

U3720H specifications

The Oreck U3720H is a powerful and versatile vacuum cleaner designed to meet the cleaning needs of both residential and commercial users. This model stands out for its lightweight design, making it easy to maneuver and transport without compromising on performance. Weighing in at just 8 pounds, the Oreck U3720H simplifies the cleaning process, allowing users to carry it up and down stairs or around large spaces with minimal effort.

One of the key features of the Oreck U3720H is its high-speed roller brush, which is engineered to capture dirt, dust, and debris from various surfaces. The vacuum is equipped with a multi-floor capability, allowing it to transition seamlessly between carpets, hardwoods, tile, and other floor types. This adaptability makes it an excellent choice for homes and businesses with diverse flooring options.

Another notable technology within the Oreck U3720H is its powerful suction capabilities, driven by a high-performance motor that operates at 102 mph nozzle velocity. This ensures that even the finest particles are effectively picked up, resulting in cleaner air quality and a more thorough clean. The vacuum is also designed with a direct suction path which minimizes the distance between the brush and the dust container, leading to enhanced efficiency in dirt removal.

The Oreck U3720H also features a patented Saniseal Technology, which automatically seals the dirt inside the bag when it's time to dispose of it. This innovative system reduces dust clouds during bag changes, making the task cleaner and more convenient. The vacuum utilizes Oreck's premium vacuum bags, which are designed to trap allergens and fine particles, ensuring that the air remains fresh and free from irritants.

In addition to its functional design, the Oreck U3720H is built to last. With a durable outer shell and a high-quality construction, it offers reliability for everyday use. The vacuum is also backed by a limited warranty, providing an additional layer of assurance to users. With its combination of lightweight portability, robust suction power, advanced technologies, and user-friendly features, the Oreck U3720H is a standout choice for anyone seeking an effective cleaning solution that can adapt to a variety of environments.