Buhnen HB 700 User manual

Operating Manual
Hot Melt Applicator
HB 700 / HB 700 Spray

2
1 General 4
1.1 Scope of use 4
1.2 Technical data 4
2 Safety instructions 5
2.1 Potential hazards 5
2.2 Instructions for safe operation 5
3 Starting 6
3.1 Connecting up 6
3.1.1 Connecting up (operation without working bracket/workstation) 6
3.1.2 Connecting up (operation with working bracket/workstation) 6
3.2 Switching on 6
3.3 Settings on the temperature regulator 7
3.3.1 Setting the working temperature 7
3.3.2 Reading out and setting the control parameters 7
4 Operation 8
4.1 Operating position 8
4.2 Charging 9
4.3 Discharging and metering melt 9
4.4 Adjusting the spray pattern (HB 700 Spray only) 10
4.5 Automatic temperature reduction (ACE) 10
4.6 Switching off 10
5 What if... 10
5.1 Status and error messages in the display 10
5.2 Troubleshooting 11
6 Servicing/maintenance 12
6.1 Service intervals 12
6.2 Cleaning 12
6.2.1 Cleaning the nozzle 13
6.3 Nozzle systems 13
6.3.1 Replacing the cone nozzle (HB 700) 13
6.3.2 Replacing the nozzle end (HB 700) 13
6.3.3 Altering the nozzle positioning (HB 700) 14
6.3.4 Replacing the swirl nozzle, pressure spring & ball (HB 700 Spray) 14
6.4 Adjusting the cover pressure 14
6.5 Replacing the cover gasket 15
6.6 Replacing the valve assembly 16
6.7 Replacing the (complete) cover 17
7 Repairs 18
8 Warranty 18
9 Disposal 18
Table of Contents

3
Working bracket
Workit
Applicator
Pos. Description Pos. Description
1Compressed air
connection 10 Lever
2 Water separator 11 Closure cap
3 Pressure regulator 12 Suspension point
4 Pressure gauge 13 Protection cap
5 Digital display 14 Spray air choke
6 Start/Stop button 15 Protection cap
7 Set button 16 Trigger
8 Down button 17 Handle
9 Up button 18 Stand hoop
Arrangement

4
1 General
Please read this Operating Manual through carefully and completely before rst using the
Applicator. Pay particular attention to the safety instructions in Section 2.
This Operating Manual must always be within easy reach for any user.
1.1 Scope of use
The HB 700/HB 700 Spray Applicator is for the melting and metered discharge of melts
(thermoplastic substances such as hot-melt adhesives, waxes, etc.) as a bead (HB 700)
or spray-on coating (HB 700 Spray) using interchangeable application tools (use as inten-
ded).
1.2 Technical data
Model HB 700 HB 700 Spray
Part No. H212500, H212600,
H212700, H212800
H213500, H215700,
H215800, H215900
Kit includes Applicator, toolset, working bracket / workstation (optional)
Weight approx. 3.09 lbs / 1.4 kg approx. 3.75 lbs / 1.7 kg
Power connection 120 V AC / 60 Hz
Power requirement [W] 600
Power consumption [A] 5
Protection (as per DIN IEC 34 T5) IP30
Safety class
(as per DIN VDE 0720)
I (safety earth terminal)
Temperature control electronic
Temperature limitation thermal cut-out (500 °F ±19.8 °F / 260 °C ±11 °C)
Operating temperature 104 °F…410 °F / 40 °C…210 °C
Temperature constancy ±3.6 °F / ±2.0 °C
Factory presetting 356 °F / 180 °C
Temperature indication digital via LED display
Automatic temperature reduction
(ACE)
Factory preset to reduce temperature by 104 °F / 40 °C
after 30 min non-use
Warm-up time [min] ~3.0…4.0
Hot-melting capacity (dependent
on melt)
with cartridges: 7.05 lbs / 3.20 kg
with granulate: 2.87 lbs / 1.30 kg
Capacity of melt reservoir 7.76  oz / 200 ml
Conveyor system compressed air
Compressed-air connection max. 145 psi / 10 bar (service unit with quick-action coupling)
The compressed air must be condensate- and acid-free
Operating pressure 21.8…87.0 psi / 1.5…6.0 bar
Protection against overpressure limited by reducing valve to 87 psi / 6 bar
Air consumption (at 72.5 psi /
5 bar operating pressure)
33.8  oz / 1 l per trigger actuation max. 1 l/s
Nozzles (standard) cone nozzle Ø 1.5 mm swirl spray head Ø 1.5 mm
Length of supply line with
electrical and pneumatic connec-
tions
9.84 ft / 3.0 m
Recommended melting stock BÜHNEN hot-melt adhesives in cartridge or granular form
General

5
2 Safety instructions
2.1 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 390 °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!
Hot-melt adhesives give off fumes which can cause odour nuisance – so ensure adequa-
te ventilation.
Improper use may in isolated cases lead to irritation of the mucous membrane. In this
case seek immediate medical advice!
2.2 Instructions for safe operation
Guard against malfunctions and operating errors by always following these instructions
precisely:
• In no circumstances may the maximum permitted operating pressure (87 psi / 6 bar) be
exceeded.
• Remove combustible or heat-sensitive objects from the area of the nozzle (1).
• When warm the device must be put down on the support hoop (18) or working console.
It must not be laid on its side.
Otherwise melt may escape uncontrolled through the vent holes and present a burn
hazard.
• Never operate the trigger (16) forcibly.
• Protect the device from moisture and damp (protection against electric shock).
• Observe the instruction leaet for the hot-melt adhesive (protection against processing
errors).
• Operate the device only with the nozzle pointing downwards. It must not be operated
above head height!
• Unplug from the mains before performing any operation on the device (servicing, clea-
ning).
• The device must be powered only from sockets with a protective conductor.
• Any extension cable used must have a protective conductor. Check that the protective
conductor is undamaged before use.
• Unplug from the mains after each use. Allow the device to cool down completely before
putting it away.
• If you notice any damage to the device or leads, unplug from the mains immediately.
Have the device promptly checked over by an expert. It must not be used again until it
has been properly repaired (see Sections 6 and 7).
Safety instructions