Power Adhesives Tec 4500B User manual

Operating Manual
Hot Melt Applicator
Tec 4500B / Tec 4500S

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
4 Operation 7
4.1 Operating position 7
4.2 Charging 7
4.3 Discharging and metering melt 7
4.4 Adjusting the spray pattern (Tec 4500S) 8
4.5 Switching off 8
5 What if... 9
5.1 Troubleshooting 9
6 Servicing/maintenance 10
6.1 Service intervals 10
6.2 Cleaning 10
6.2.1 Cleaning the nozzle 10
6.3 Nozzle systems 11
6.3.1 Replacing the cone nozzle (Tec 4500B) 11
6.3.2 Replacing the nozzle end (Tec 4500B) 11
6.3.3 Replacing the swirl nozzle, pressure spring & ball
(Tec 4500S) 12
6.4 Adjusting the cover pressure 12
6.5 Replacing the cover gasket 13
6.6 Replacing the valve assembly 13
6.7 Replacing the (complete) cover 14
7 Repairs 15
8 Warranty 15
9 Disposal 15
10 Accessories 15
11 Diagrams 16
11.1 Wiring diagram 16
11.2 Pneumatic diagram 17
Table of Contents

3
Arrangement
Applicator
Tec 4500S Tec 4500B
2
3
4
5
6
7
8
A
AA
1
Pos. Description Pos. Description
1 Start/Stop button 5 Spray air choke
2 Lever 6 Trigger
3 Closure cap 7 Handle
4 Suspension hook 8 Stand foot

General
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 Tec 4500B/Tec 4500S Applicator is for the melting and metered discharge of mel-
ts (thermoplastic substances such as hot-melt adhesives, waxes, etc.) as a bead (Tec
4500B) or spray-on coating (Tec 4500S) using interchangeable application tools (use as
intended).
1.2 Technical data
Model Tec 4500B Tec 4500S
Kit includes Applicator, toolset
Weight [kg] ~1.25 ~1.45
Power connection 230VAC or 110-120 VAC, 50/60 Hz, earthing-pin plug
Power requirement [W] 600
Power consumption [A] 2.6
Protection (as per DIN IEC 34 T5) IP30
Safety class
(as per DIN VDE 0720)
I (safety earth terminal)
Temperature control Bimetal
Temperature limitation [°C] thermal cut-out (153 ±5)
Operating temperature [°C] 180 constant
Temperature constancy [°C] ±7
Factory presetting [°C] 180
Warm-up time [min] ~10.0
Hot-melting capacity (dependent
on melt) [kg/h]
with cartridge: 3.2
with granulate: 1.3
Capacity of melt reservoir [ml] 200
Conveyor system compressed air
Compressed-air connection [bar] max. 6
The compressed air must be condensate- and acid-free
Operating pressure [bar] 1.5…6.0
Air consumption
(at 5 bar operating pressure)
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 [m]
3.0
Recommended melting stock Tecbond hot-melt adhesives in cartridge or granular form

Safety instructions
5
2 Safety instructions
2.1 Potential hazards
Danger!
Never point the operation-ready device at people.
Danger from high pressure!
Burn Hazard
Nozzle and molten adhesive can be over 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!
Odour 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 (6 bar) be excee-
ded.
• Remove combustible or heat-sensitive objects from the area of the nozzle.
• When warm the device must be put down on the stand foot (8) or, alternatively on the
working console (see section 10, Accessories). 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 (6) 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).

Starting
6
3 Starting
3.1 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. Place the device on the base and stand foot.
3. Connect the device to a pressure regulator (see accessories). The device may be ope-
rated with a maximum pressure of 6 bar.
4. Set the operating pressure to 4 bar with the pressure regulator.
5. Connect the mains plug to a socket outlet with earthing contact.
6. Switch on the device.
7. Wait approximately 10 minutes to warm up.
The device is now ready for use.

Operation
7
4 Operation
4.1 Operating position
The device must be operated only with the nozzle pointing downwards. In other posi-
tions melt may get into the compressed-air ducts and damage the device.
Fig. 4/1: Permitted operating position
4.2 Charging
Burn hazard!
Nozzle and molten adhesive can be over 200 °C hot. Always wear heat-resistant gloves
when performing the steps described below.
The adhesive can be relled as soon as the ll level has dropped below the reserve in the
tank or below the marking on the outside of the housing.
1. Place the device in the working bracket or on the base.
2. Switch the device on. Wait approx 10 min. until the working temperature has been
reached.
3. Take hold of the device by the handle (7) with one hand. With the other hand turn the
lever (2) clockwise through 180º and swivel the closure cap open.
4. Fill the tank to a level not less than 2 cm below the rim. The maximum level is marked
on the device with a sticker (see illustration left). Do not charge the device above this
level since the melt expands when heated.
5. Swivel the closure cap back. Turn the lever (2) anticlockwise as far as it will go, in order
to lock the cap.
4.3 Discharging and metering melt
1. Place the device in the working bracket or on the base.
2. Switch the device on. Wait until working temperature has been reached.
3. Check that there is enough melt in the tank.
Burn hazard!
If the device is “run dry” drops of melt may escape uncontrolled and endanger the opera-
tor and persons in the vicinity.
Every time you actuate the trigger, therefore, rst carry out step 4.3 above.
4. Actuate the trigger (6)
You can meter the quantity discharged by altering the pressure (max. 6 bar) at the
pressure regulator and/or selecting an appropriate nozzle.
max. Level

Operation
8
5. After the trigger (6) has been released the compressed-air supply is cut off immediately
and the tank vented.
4.4 Adjusting the spray pattern (Tec 4500S only)
The spray pattern is altered by adjusting the spray air.
Set the optimum spray pattern by turning the spray-air choke (5) (access via the hole in
the left housing half):
• Turning it clockwise decreases the spray-air pressure.
• Turning it anticlockwise increases the spray-air pressure.
4.5 Switching off
1. Press the Start/Stop button (1).
2. Adjust the operating pressure down to “0” with the pressure regulator or disconnect the
compressed-air supply.

What if...
9
5 What if...
This Section summarises the status and error messages and provides help in eliminating
errors.
If malfunctions occur please rst check:
• that the power supply and compressed-air supply are functioning correctly, and
• whether there is mechanical damage to the device or supply lines (power supply, com-
pressed air).
If you nd any mechanical damage, the device must in no circumstances be started up
again. Have it checked and repaired by a qualied service agent.
5.1 Troubleshooting
Fault Possible cause Remedy See Section
Nozzle goes on dripping Nozzle valve partially
obstructed or damaged
Drain the device. Actuate
the trigger for approx. 5 s to
clear the nozzle.
Tec 4500B:
Clean or replace nozzle end
Tec 4500S:
Clean or replace swirl noz-
zle, pressure spring and ball
6.2
Too little or no melt is dischar-
ged
Operating pressure too low Increase operating pressure
(max. 6 bar)
4.3
Compressed-air supply
disconnected
Check compressed-air
supply
Nozzle system clogged Tec 4500B:
Clean or replace cone noz-
zle and if necessary nozzle
end
Tec 4500S:
Clean or replace swirl noz-
zle, pressure spring and ball
6.2, 6.3
Compressed air escapes from
closure cap (3)
Insufcient cover pressure Increase cover pressure 6.4
Gasket dirty Clean sealing faces
Compressed air escapes from
service unit
Connections not airtight Tighten or replace gaskets
Tec 4500S only
Spray pattern not ideal Spray pattern wrongly set Adjust spray air 4.4
Nozzle system clogged or
damaged
Clean or replace swirl noz-
zle, pressure spring and ball
6.3.3

Servicing/maintenance
10
6 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 must be performed only by qualied
electricians.
Burn hazard!
Nozzle and molten adhesive can be over 200 °C hot. Wear heat-resistant gloves when
performing servicing and maintenance operations.
6.1 Service intervals
Observe the stated service intervals to ensure always correct and reliable operation:
Weekly: Check that all parts are present, leak-free and undamaged and all screws and lines securely
seated
Remove adhesive residues and other contaminants, especially on the inside of the cover
6.2 Cleaning
• Do not use aggressive cleaning agents for cleaning the device. These may damage device
components.
We recommend cleaning with parafn oil.
• Replace completely parts which are no longer cleanable (e.g. because of burnt-on or reacted
hot-melt adhesive). We recommend having this work done by the manufacturer or distributor.
• Remove residues of hot-melt adhesive and other contaminants by mechanical means only,
e.g. with a cloth, soft brush, wooden spatula or similar.
6.2.1 Cleaning the nozzle
• Wipe the nozzle with a cloth to remove slight external dirt.
• To remove blockages insert a drill bit, needle or wire of suitable diameter into the
nozzle orice.
In stubborn cases replace the nozzle (see Section 6.3).