### Product Overview The Fischer Dispenser Gun (FIS-AM) is a rugged, professional-grade manual dispensing gun engineered by Fischer for the effortless and highly precise application of chemical injection mortars and resin cartridges. Designed specifically for construction professionals, masonry contractors, and civil engineers, this high-performance applicator is the definitive tool for extruding two-component chemical anchoring formulations. Whether working with epoxy, hybrid, or polyester resins, the FIS-AM dispenser provides the mechanical leverage and structural durability required to handle high-viscosity resins in demanding job site environments without operator fatigue. ### Key Engineering Features & Advantages * **High Mechanical Transmission Ratio:** Engineered with an advanced dual-rod driving mechanism that converts minimal hand pressure into smooth, high-force extrusion, making it effortless to dispense stiff epoxy resins even in cold weather conditions. * **Robust All-Steel Construction:** Crafted from heavy-gauge reinforced steel and durable aluminum alloy, ensuring exceptional resistance to job site drops, rough handling, and daily industrial wear. * **Ergonomic Design & Grip:** Features a contoured trigger and balanced handle design that fits comfortably in the user's hand, reducing strain and fatigue during extensive multi-hole anchoring campaigns. * **Integrated Drip-Control Mechanism:** Equipped with an instant-release brake tab that immediately relieves internal cartridge pressure when the trigger is released, preventing messy resin run-on and reducing expensive material waste. * **Broad Cartridge Compatibility:** Versatile housing design accommodates a wide variety of coaxial and side-by-side Fischer injection mortar cartridges, including 360ml, 390ml, and 585ml formats. ### Technical Specifications & Material Properties The Fischer Dispenser Gun (FIS-AM) is constructed with a hardened steel push rod and heavy-duty drive pawls designed to withstand repeated high-pressure actuations without slipping or wearing down. The cartridge cradle is shaped from rigid steel to securely cradle injection cartridges, preventing lateral deflection or cartridge bursting during high-pressure extrusion. All external metallic components are finished with a corrosion-resistant powder coat or galvanic plating to withstand exposure to wet concrete, atmospheric humidity, and chemical cleaning solvents. Its precision-machined plunger discs ensure equal pressure distribution across both resin and hardener pistons, guaranteeing the exact 1:1 or 3:1 volumetric mixing ratio essential for proper resin polymerization. ### Application Areas & Use Cases The Fischer Dispenser Gun (FIS-AM) is an indispensable installation tool across all sectors of construction where chemical anchoring systems are deployed: * **Rebar Doweling & Slab Extensions:** Extruding large volumes of chemical resin for post-installed rebar connections in structural concrete foundations and shear walls. * **Structural Steel Erection:** Dispensing injection mortars for anchoring heavy steel column base plates, facade brackets, and structural beams. * **Masonry & Hollow Brick Fastening:** Precision injection of resin into perforated brick mesh sleeves for securely attaching awnings, gates, and window frames. * **Infrastructure Retrofitting:** Applying high-strength chemical anchors during bridge repairs, tunnel reinforcements, and seismic retrofitting projects. * **Industrial Equipment Mounting:** Filling boreholes for hold-down bolts securing heavy manufacturing machinery, cranes, and robotic assembly units. ### Installation Guide & Best Practices To maximize tool longevity and ensure flawless chemical anchor installations, observe the following operational practices: 1. **Cartridge Preparation:** Remove the screw cap from the Fischer injection mortar cartridge and attach the appropriate Fischer static mixer nozzle tightly onto the cartridge threads. 2. **Loading the Dispenser:** Press the rear brake release tab and pull the steel push rods all the way back. Place the prepared cartridge firmly into the steel cradle of the FIS-AM dispenser gun. 3. **Initial Balancing Purge:** Point the nozzle into a disposable container and pull the trigger repeatedly until the pistons engage the cartridge. Discard the first 10 cm (4 inches) of extruded resin until a uniform, homogeneous color is achieved, confirming complete mixing. 4. **Precision Injection:** Insert the static mixer nozzle to the very bottom of the cleaned borehole and pull the trigger smoothly. Withdraw the nozzle slowly as the hole fills, stopping when the borehole is approximately two-thirds full. 5. **Post-Application Care:** Upon finishing the application, press the brake tab to relieve cartridge pressure. Leave the static mixer attached to the cartridge as a secure seal until the next use. Periodically clean the dispenser push rods and apply a light spray of lubricant to ensure smooth mechanical operation.