Hörmann BFT3 Embedding Frame Assembly Instructions
Model: BFT3
Manufacturer: Hörmann
About This Guide
This guide is valid for the Embedding Frame BFT3. Dimensions are in millimeters.
Safety
Failure to follow this guide may result in personal injury or product damage.
- Read and follow the instructions.
- Keep the instructions accessible.
Intended Use
The product is used in commercial areas and serves the following purposes:
- Attachment at loading points for trucks
- Use for installing a Hörmann Loading Bridge HTL3-C.
Qualified Personnel
Only allow trained personnel authorized and instructed by the operator to work on the product. Assembly involves:
- Mechanical work
- Welding and concrete work
Specialized assembly work must only be performed by qualified personnel from specialized companies. This includes work on building statics or ventilation systems.
Scope of Delivery
The scope of delivery for the embedding frame includes:
- Embedding frame, in individual parts
- Fastening material
Installation Requirements
Pit Shapes
Depending on the door guidance, various pit shapes are possible:
Door Guidance Up to the Loading Bridge
The door closes on the platform of the loading bridge. This door guidance has no impact on the pit design.
Door Guidance in Front of the Loading Bridge
The door guidance requires a longer pit with a recess for the door. The embedding frame is installed further back in the pit. The door closes on the insulation panel (customer-provided) below the loading bridge. For loading ramps without underfloor access, the door closes on the concrete floor.
Note: Reinforcement must extend to the pit edge on the sides. Alternatively, install dowels according to the manufacturer's pit drawings.
Diagram Description: Illustrates two pit configurations: one simple rectangular pit and one longer pit with a recess for the door. Also shows installation using precast concrete parts and installation with a casting joint.
Pit Requirements
For permanently faultless functioning, the pit must be executed as follows:
- According to the manufacturer's design drawings.
- Dimensionally accurate and square on all sides.
- Sufficiently stable for damage-free absorption of all forces that occur normally or rarely.
⚠️ ATTENTION: Risk of breakout due to insufficient anchoring. If the pit cannot withstand the load, the loading bridge will break out. The load is particularly high during emergency stops. Example: a truck drives away while the loading bridge is still in operation. Ensure sufficient connection to the building structure, especially in areas where load forces occur.
Check Pit Features
Control the dimensional accuracy (in mm):
- Pit length PL / PL1 = Order length NL - 5 (Tolerance +5/-0)
- Pit width PW = Order width NW + 70 (Tolerance ±10)
- Pit height PH > Installation height NH +5
The lengths of the diagonals (C) must not deviate from each other by more than 10 mm.
Note: A slope of up to 2% towards the door opening is acceptable for the embedding frame. However, the embedding frame must be installed exactly horizontally in width. Otherwise, the functionality of the loading bridge may be impaired, especially when loading below the ramp level.
Diagram Description: Shows three pit configurations (no recess, wide recess, narrow recess) with dimensions labeled PL, PL1, PW, PH, and diagonals C1, C2.
Key for dimensions:
- PH: Pit height
- PL: Pit length
- PL1: Pit length from the rear to the recess (pit with recess for door guidance)
- PW: Pit width
- C1/2: Diagonals
Assembly
The loading bridge may only be assembled if the requirements for the installation location are met.
Note: Deviations from the depicted pit shape are possible. The illustrations do not account for the extension and adaptation of the pit for door guidance in front of the loading bridge.
Safety Instructions for Assembly
Assembly only by qualified personnel. Ensure the following conditions are met during assembly:
- The work area is cordoned off.
Required Tools
Gather the necessary tools. We recommend performing the assembly with 2 people.
Diagram Description: Illustration of tools including a spirit level, measuring tape, hammer, drill, wrenches, safety glasses, gloves, and ear protection. Also shows two workers and a forklift.
Lifting aids are required for assembly. Supplied upon corresponding order.
Unloading
Contact your supplier in case of deformation or damage. Minor damage to the paint or galvanization should only be repaired after assembly.
⚠️ ATTENTION: Damage from impact. The embedding frame must not deform, as this can impair its functionality. Always keep the embedding frame horizontal. Ensure the embedding frame does not get bumped or dropped.
Diagram Description: Shows a forklift lifting and placing the embedding frame.
Assembly
Assemble the embedding frame in the specified order.
Diagram Description (Figure 1: Positioning Components): Shows the components of the embedding frame laid out near a pit, ready for assembly.
Mounting Front Beams (Figures 2 & 3)
Align a side plate and screw it firmly to the front beam. Ensure all edges are flush.
Diagram Description: Shows side plates being attached to front beams, with a note to ensure flush edges.
Mounting Rear Edge Bracket (Figure 4)
Screw the rear edge bracket to the two side plates.
Diagram Description: Shows the rear edge bracket being attached to the side plates.
Mounting Positioning Aids (Figure 5)
Screw the four positioning aids to the embedding frame.
Diagram Description: Shows positioning aids being screwed onto the embedding frame.
Mounting Back Plate (Figure 6)
Screw the back plate to the embedding frame.
Diagram Description: Shows the back plate being screwed onto the embedding frame.
Mounting Lifting Aids (Figure 7)
Screw the lifting aids to the specified locations on the embedding frame.
Diagram Description: Shows lifting aids being attached to the embedding frame.
Brace the frame on-site with a wooden beam parallel to the front beam.
Important Note: The lifting aids must be attached exactly at a right angle to the side panels; otherwise, the frame will deform. Use the same holes on both sides for fastening.
Diagram Description: Shows a wooden beam bracing the frame and the removal of lifting aids.
Installation
The welding symbols comply with ISO 2553 (E).
The Embedding Frame BFT3 is either cast with precast concrete parts (A) or embedded in a pit with a sufficiently wide casting joint (B).
Erecting
Position the embedding frame. Ensure the frame is aligned horizontally.
Diagram Description: Shows the embedding frame being placed into the pit (A) and then leveled (B).
Welding
❗ WARNING: Health hazard when welding galvanized parts. Welding galvanized parts releases zinc fumes, which can cause health impairments if inhaled. Grind off the zinc layer at the welding points.
The frame has anchors on the sides and rear.
Important Note: All rear anchors must be welded! You do not need to weld all side anchors if the following conditions are met:
- The pit conforms to the manufacturer's plans.
- The pit has dowels on the sides.
- All anchors are bent.
In this case, weld the following anchors:
- The two outer anchors
- All anchors at the dowels
- At least half of all side anchors
Bend all anchors. Connect the anchors to the dowels or reinforcement.
Weld the anchors to the reinforcement or dowels.
Diagram Description: Shows bending anchors, connecting them to dowels/reinforcement, and welding details with dimensions (a4, 90 degrees).
Pouring/Casting
Concrete quality: minimum C20/25.
Before pouring, ensure that the positioning and anchoring of the embedding frame are still intact.
Pour the concrete casting compound.
Diagram Description: Shows concrete being poured into the pit around the frame.
Removing Aids
Remove and dispose of the assembly aids.
Diagram Description: Shows assembly aids being removed from the frame.
Final Check
Check if any frame deformations have occurred during installation.
⚠️ ATTENTION: Damage due to deformation. The embedding frame must not deform, as this can impair its functionality. Ensure that the lateral pressure from pouring and compacting does not become too high.
⚠️ ATTENTION: Risk of breakout due to insufficient anchoring. If the anchoring is insufficient, the pit cannot withstand the load, and the loading bridge will break out. Ensure sufficient connection to the building structure, especially in areas where load forces occur. The edge bracket must be completely backfilled. You can check this through the opening in the edge bracket.
Diagram Description: Shows checks for frame deformation and edge bracket filling, with visual indicators (red X, green checkmark).
