The weight counterbalance concept was developed more than 50 years ago by Abram Reimer in the small Mennonite village of Steinbach, Manitoba. Canada and parts of the northern U.S. were the early recipients of these weight counterbalance doors. Grandson, Greg Reimer (part owner of Hanover Doors) has witnessed and helped produce many innovations in this nearly indestructible weight mechanism. The weight counterbalance concept being so good has allowed this type of door to survive in an intensely competitive market boasting thousands of doors still in operation (on the origional weight system for 2 and 3 decades.(some even more) Many of these systems have had little or no service required. Thousands of these systems are being used in remote (hard to reach locations) and many by large trucking firms, warehousers, hutterite colonies, farmers and commercial/industrial businesses. These customers have learned of the quick payback of these incredibly reliable door systems. The savings in service free operation will normally, (in high use situations) pay for the investment in less than 10 years. With most doors (under heavy use) it would now be time to replace or expect a very high cost of operation. Not so with our “Weight Counter Balanced” system. By now, you have spent little or nothing at all on service or maintenance and your doors should still be good for another 20 or more years. The initial investment on smaller doors is usually slightly higher than industry standard torsion spring products and about the same or less in cost on the very large doors. These doors can be as wide as 40′ and practically any height.
This door operating system can and will deliver the most economical long term service of any overhead door system on the market today. In moderate to heavy use application this system should save you the equivalent of the cost of the door within the first 10 years. After that, you may still expect another 20 to 30 years of virtually trouble free and service free operation. With most other overhead door operating systems, it is likely that you would replace the doors and lift systems as often as every 5 to 9 years. Many of Canada’s most successful trucking companies, (remember the harsh climate) have used this exact same system for more than 40 years.
Simple and durable. Steel ballast is used to counter the weight of the door. The door goes up and the weights come down. The door goes down and the weights go up. An enclosure on one side of the door guides a series of weights. These weights are connected to the door by a cable through a series of pulleys. This is the Hanover Lift System.
This system offers many advantages. – It’s durability allows for almost unlimited cycles of operation. Servicing the door is easy but under normal use is usually not required. – It is ideal for very high, wide or high and wide doors.
Unlimited Cycles – Longevity
- The longevity of the Hanover Lift System is the result of the design of the system as well as the design of all the components. All of the parts used in the Hanover Lift System are designed to last the life of the building into which the system is installed.
- The sealed rollers for example, have a 2000lb load capacity. The rollers and welded hinges ensure long life regardless of how often you use the door.
- The weight enclosure is a welded steel cage and for your safety it is covered with 28 gauge galvanized metal to keep out fingers.
- Severe conditions are characteristic of potato or vegetable storage buildings. The Hanover Lift System will stand up to the extreme humidity and corrosive effects of vegetable storage.
- The Hanover Lift System works well in most standard or special applications. Hard to reach, hard to service mine shafts or other applications such as apartment block garages, hospital parking or applications that demand hundreds of cycles per day.
- Grain elevators may require doors up to 28 feet high or higher.
- Warehouses or service shops that require extra wide and high overhead doors. Sliding mullions are optional and extremely effective in providing a narrow or very wide opening.
- Many new or existing buildings may have very little headroom. The Hanover Lift System works well with as little as 12″ of headroom.
- Hanover Lift Systems stand up well in truck and car washes. Quonset buildings with limited headroom, corporate farms and commercial or industrial warehouses.
Simplicity of the Weight System
- The principle of The Hanover Lift System is as follows. A weight is carried up and down an enclosure. As the weight moves, the door moves. The force of gravity acting on both the door and the weights creates equilibrium. Fewer panels are required, as standard panels must be joined to create panel heights of 42, 45, or 48 inches.The only moving parts are the cables, pulleys and rollers. Endcaps to accommodate your door panels are included.
- Balance adjustments are made at the time of installation. The balance is so precise that even a very large door can be opened easily by hand.
- The Hanover Lift System is easy to operate manually, by chain hoist or by an electric operator. Hand transmitters, photo eyes, auto reversing options and all industry standard safety and convenience features are readily available.
- An essential part of the Hanover Lift System is the face hardware which has been built with the same durability in mind. The lift system and face hardware can be installed on most panels of your choice.
- Along with the heavy-duty hardware, Hanover Lift Systems supplies a track and pulley system as an integral part of the Lift System. A Hanover Lift System includes the weight counter-balance, the hardware kit including face hardware, tracks, end caps and pulleys. Everything is included except the panels and seals.
- DESCRIPTION: Work included: provide and install sectional steel weight counterbalance doors as scheduled and detailed in the construction documents and as specified herein. Related Work: Preparation of opening, steel jambs, structural work, miscellaneous iron work, electrical wiring, and field painting are in the scope of work of other divisions or trades
- QUALITY ASSURANCE: Qualifications of Manufacturer: Products used as described in this section, shall be produced by a manufacturer regularly engaged in the fabrication of overhead door products and with a history of successful production acceptable to the Architect, such as Hanover Doors.
- GUARANTEE: All doors specified in this Section shall be guaranteed against defective materials and workmanship for a period of 1 year. The panels used in the production of all weight counterbalance doors shall be warranted against de-lamination for 5 years.
- ACCEPTABLE MANUFACTURERS: All sectional steel weight counterbalance doors shall be as per requirements of Hanover Doors, Steinbach, Manitoba, Ca. Panels and tracks shall be by Richards -Wilcox, Mississauga, Ontario, Ca. Weights and related components shall be by Hanover Doors, Steinbach, Manitoba, Canada.
- SECTIONS: All door sections shall be fabricated from prepainted, hot dip galvanized, steel sheet, with rigid polyurethane core, CFC-11 free, face sheet stucco embossed and rib reinforced. Sections shall be thermally broken, steel-polyurethane-steel sandwich formed by continuous process. Sections formed with shiplap joint. Sections shall be capped with 16 ga. , 6” wide galvanized steel, for hardware attachments. Face sheet thickness 0.41mm (0.016” ) 28ga. Section thickness is 51mm (2”). Sections shall have continuous internal reinforcement for hardware mounting. Standard section height shall be 42”, 45”, or 48”. All three heights or any combination can be used to achieve desired door height.
- FINISH: Two coat baked-on paint system on exterior side, primer and polyester finish coat.(White)
- TRACK: Commercial Industry Standard galvanized steel track shall be 3”. Continuous steel angles shall be used for installing tracks on wood or steel jambs. Steel track thickness shall be 2.75mm=.108” . (12 ga.) Overall outside dimension 3 1/8”. Vertical tracks sloped for weather tight closing, 18” radius standard. (12” radius optional and unique for 3” track in the Industry).
- HARDWARE: All roller brackets and hinges shall be 1/8” (11ga.) plate welded to 13/16” I.D. steel pipe.(roller shaft sleeve)and hinged through welded steel pipe using a 9/16” steel pin. Surfaces shall be powder coated, autophoretically dipped or painted depending on fabrication method or requirements. Roller shaft and hinge pin lubrication is by all purpose lithium grease. Rollers shall be 3” in diameter mounted on 6203 sealed bearings carried by a ¾” steel shaft. A one point side lock will be supplied if no electric operator or chain hoist has been specified.
- COUNTERBALANCE: Counterbalance shall consist of a series of weights mounted at an appropriate spot (recommended immediately beside the opening). Optional locations can be specified for building designs with very little side room. Weights can be mounted at different locations in the same room with the door[s] or in other rooms as assessed feasible. The weights shall be designed to balance the weight of the door and shall be attached to the door panels by 3/16” or ¼” galvanized aircraft cables. For manual operation all pulleys used in weight transfer shall be 5 ½” cast iron or machined mild steel or 10” machined mild steel. (Dependent on total door weight) For chain hoist or electric operation, the pulley that does the actual lifting shall be steel. Weight housing (tower) shall be constructed of 1” x 1/8” angle or greater (dependent on total door weight). Tower top (supporting cable eye-bolt fixtures) shall be constructed of 2” x 2” x ¼” mild steel. Weight boxes shall be constructed of mild steel as follows – 1” x 1/8” angle corner guides, 3/8” weight box bottom, 2” x 2” square tube lift attachment welded to the weight box bottom. Compression springs shall be loaded into the lift attachment to prevent jarring. Weights shall be joined by appropriate size chain which is normally joined to the weight box in factory.
- GLAZING: When specified shall be 12”x 24” inch standard, dual pane sealed unit, mounted in high impact, white polystyrene frames. 6”x12” security windows and other sizes available upon request.
- WEATHERSEAL: Bottom door section shall have continuous flexible vinyl bulb style (4”wide) weatherseal pre-installed to extruded aluminum retainer. Top door section shall have a 4” flexible seal attached to top of section. Perimeter weatherseal shall be supplied and installed at time of installation. Perimeter weatherseal shall be a triple finned heavy duty vinyl mounted in a metal pre-painted retainer. With an even and level floor and proper backing, the weatherseal should completely seal the door to the building, preventing air infiltration. Two dual finned seals between sections.
- WIND LOAD: Door design to meet industry standard wind load. (Specifications as per panel manufacturer.)
- INSULATION: Insulation shall be 2” nominal thickness rigid polyurethane foam with a tested R-Value of 18.5. (RSI=3.26), U=0.54 (USI=0.31). R and U values based on ASTM C518 standard.
- OPERATION: Operation can be specified manual, chain hoist or electric. Manual operation is by pushup operation with lift handles provided and pull down by a length of rope suitable in length and thickness. Electric operation shall include chain hoist, brake, emergency release, mounting brackets and various voltages and phases as standard.
- OPTIONS: Pass doors. Exhaust ports. Most industry standard electrical control devices (Information on request)
For doors using Weight Counterbalance lift mechanisms
- All of the roller brackets, intermediate hinges, and the struts should be checked for security. Tighten any loose fasteners and replace any hinges or roller brackets, which appear unreasonably worn in any way.
- Check all the rollers and if any appear wobbly they should be replaced.
- Check the fasteners of the vertical tracks and the horizontal track hangers and tighten any loose fasteners.
NOTE: Use Hanover approved lubricants should any of the long life lubricants be replaced. (“Fluid Film” is a suitable lubricant for most items and should be available at your local hardware store.)
NOTE: Weight counterbalance lift mechanisms are maintenance free under normal conditions. Under conditions of severe humidity, older doors with wood frames may require rebalancing. New doors using Richards-Wilcox panels rarely require any attention.
(Limited Warranty) Hanover Door Systems (1996) Inc.(Hanover) warrants each door and it’s component parts to be free from defects in material and workmanship for a period of one (1) year from date of delivery to the original purchaser. If, within one (1) year period, authorized Hanover personnel find a door or component part defective upon inspection, Hanover will replace the defective door or component part. Labor charges for installation shall be the responsibility of the consumer. To make a claim under this warranty, contact Hanover Door Systems (1996) Inc. In addition to the Hanover one-year limited warranty, and subject to the conditions and limitations, stated in that warranty, doors shall be free from delamination of the foam core insulation and its exterior and interior skins for five years from installation date.
HANOVER SHALL NOT BE LIABLE FOR ANY CONSEQUENTAL OR INCIDENTAL DAMAGES. CABLE JUMPING IS NOT WARRANTED UNDER ANY CIRCUMSTANCES. ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, ARE HEREBY EXPRESSED EXCLUDED.