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Summary of Contents for Buhnen HB 450
- Page 1 Translation of the original Operating Manual Hot Melt Applicator HB 450/HB 450 Spray H2188XM (Release 07-2016)
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Page 2: Table Of Contents
Nozzle systems 6.3.1 Replacing the cone nozzle (HB 450) 6.3.2 Replacing the nozzle end (HB 450) 6.3.3 Replacing the swirl nozzle, pressure spring & ball (HB 450 Spray) Adjusting the cover pressure Replacing the cover gasket Replacing the valve assembly... - Page 3 Arrangement Applicator HB 450 Spray HB 450 Pos. Description Pos. Description Start/Stop button Spray air choke Lever Trigger Closure cap Handle Suspension hook Stand foot...
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Page 4: General
This Operating Manual must always be within easy reach for any user. Scope of use The HB 450/HB 450 Spray Applicator is for the melting and metered discharge of melts (thermoplastic substances such as hot-melt adhesives, waxes, etc.) as a bead (HB 450) or spray-on coating (HB 450 Spray) using interchangeable application tools (use as intended). -
Page 5: Safety Instructions
Safety instructions Safety instructions Potential hazards Danger! Never point the operation-ready device at people. Danger from high pressure! Burn Hazard Nozzle (1) and molten adhesive can be over 392° F (200° C) hot. Wear heat-resistant gloves if contact is unavoidable. Risk of Explosion! When working with oxygen or combustible gases there is risk of explosion! Odor nuisance! -
Page 6: Starting
Starting Starting Connecting up To connect up the device proceed as follows: 1. Mount the stand: Fig. 3/1: Mounting the stand foot • To do so, insert the stand foot in the recess at the housing. • The stand foot must engage. 2. -
Page 7: Operation
Operation Operation Operating position The device may be operated only with the nozzle pointing downwards. In other positions melt may get into the compressed-air ducts and damage the device. Fig. 4/1: Permitted operating position Charging Burn hazard! Nozzle and molten adhesive can be over 392° F (200° C) hot. Always wear heat-resistant gloves when performing the steps described below. -
Page 8: Adjusting The Spray Pattern (Hb 450 Spray Only)
5. After the trigger (6) has been released the compressed-air supply is cut off immediately and the tank vented. Adjusting the spray pattern (HB 450 Spray only) The spray pattern is altered by adjusting the spray air. Set the optimum spray pattern by turning the spray-air choke (5) in the protective sleeve (Opening on the side in the left housing half): •... -
Page 9: What If
Gasket dirty Clean sealing faces Compressed air escapes from Connections not airtight Tighten or replace gaskets service unit HB 450 Spray only Spray pattern not ideal Spray pattern wrongly set Adjust spray air Nozzle system clogged or Clean or replace swirl 6.3.3... -
Page 10: Servicing/Maintenance
Servicing/maintenance Servicing/maintenance Danger! Danger due to inadvertent triggering. Disconnect the compressed air supply before all maintenance and service work. Danger! Voltage hazard. All operations which necessitate opening the device may be performed only by qualified electricians. Burn hazard! Nozzle (1) and molten adhesive can be over 392° F (200° C) hot. Wear heat-resistant gloves when performing servicing and maintenance operations. -
Page 11: Nozzle Systems
Cone nozzle Air cap Cap ring Fig. 6/1: Nozzle systems in detail 6.3.1 Replacing the cone nozzle (HB 450) Tools needed • 2 open-end spanners size 19 1. Disconnect the compressed air supply. 2. Let the device heat up thoroughly. -
Page 12: Replacing The Swirl Nozzle, Pressure Spring & Ball (Hb 450 Spray)
Servicing/maintenance 6.3.3 Replacing the swirl nozzle, pressure spring & ball (HB 450 Spray) Tools needed • 1 hook spanner • 1 open-end spanner size 11 There must be no melt at all left in the tank when the nozzle end is replaced. Therefore discharge the melt completely, e.g. -
Page 13: Replacing The Cover Gasket
Servicing/maintenance Replacing the cover gasket Tools needed • 1 Phillips-type screwdriver size 1 Position carefully when assembling Fig. 6/3: Replacing the cover gasket There must be no melt at all left in the tank when the cover gasket is replaced. Therefore discharge the melt completely, e.g. -
Page 14: Replacing The Valve Assembly
Servicing/maintenance Replacing the valve assembly Tools needed • 1 hexagon socket spanner size 2.5 • 1 hexagon socket spanner size 3 • 1 auxiliary screw M4 Fig. 6/4: Replacing the valve assembly 1. Let the device heat up. Continue activating the trigger until the tank is completely empty. -
Page 15: Replacing The (Complete) Cover
Servicing/maintenance Replacing the (complete) cover Tools needed • 1 hexagon socket spanner size 2.5 • 1 hexagon socket spanner size 3 • 1 open-end spanner size 13 Fig. 6/5: Replacing the cover 1. Let the device heat up. Continue activating the trigger until the tank is completely empty. -
Page 16: Repairs
Repairs Repairs Repairs other than those described in this Operating Manual may be undertaken only by persons appointed by the manufacturer or other technically competent persons using BÜHNEN original replacement parts. Warranty The device has been developed and manufactured in accordance with the most up-to- date technical knowledge. -
Page 17: Diagrams
Diagrams Diagrams 10.1 Wiring diagram... -
Page 18: Pneumatic Diagram
Accessories 10.2 Pneumatic diagram Accessories Designation Article No. Rack H217903 Pressure reducer H206426... - Page 19 Declaration of Conformity...
- Page 20 Distributed by PAM Fastening Technology Inc. Division of Bühnen Charlotte, N.C. USA Phone (704) 394 31 41 (704) 394 93 39 www.pamfast.com sales@pamfast.com...
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