Meler B4 NON-STOP User manual

MA-5081-E 030120
GLUING SOLUTIONS
ADHESIVE
MELTER
B4
NON-STOP
INSTRUCTIONS
MANUAL

Published by:
Focke Meler Gluing Solutions, S.A.
Pol. Arazuri-Orkoien, c/B, nº3 A
E-31170 Arazuri - Navarra - Spain
Phone: [phone]
[e-mail] - www.meler.eu
A Focke Group Company
Edition January 2020
© Copyright by Focke Meler
All rights reserved. Its reproduction, diffusion or use by electronic or other
means of all or any part of this document without the express authorization of
its owner is strictly prohibited.
The specifications and information contained in this manual may be modified
without prior notice.
This manual is a translation of the original that was written by Focke Meler
Gluing Solutions, S. A in english language. If there is any discrepancy between
the different versions of this manual, the original written in the english
language shall prevail. Focke Meler Gluing Solutions, S. A shall not be liable
in any way for any damages and/or losses that may be directly or indirectly
derived from discrepancies between the original version of the manual and this
translation.

MA-5081-E B4 NS ADHESIVE MELTER MANUALTABLE OF CONTENTS
TABLE OF CONTENTS
1. SAFETY GUIDELINES 1-1
General 1-1
Symbols 1-1
Mechanical components 1-2
Electrical components 1-2
Hydraulic components 1-2
Pneumatic components 1-2
Thermal components 1-3
Materials 1-3
Noise emission declaration 1-3
Intended use 1-4
Limited use 1-4
2. INTRODUCTION 2-1
Description 2-2
Operating modes 2-2
Melter identification 2-3
Main components 2-4
Control panel 2-5
Pumping control card components 2-6
Optional equipment 2-6
3. INSTALLATION 3-1
Introduction 3-1
Installation requirements 3-1
Free space 3-1
Electrical consumption 3-2
Compressed air 3-2

FOCKE MELER GLUING SOLUTIONS TABLE OF CONTENTS
Other factors 3-2
Unpacking 3-3
Contents 3-3
Mounting the equipment 3-3
Electrical power supply connection 3-3
Pneumatic connection 3-4
Hose and applicator connection 3-4
Programming parameters 3-5
Programming working temperatures 3-5
Selecting the overheating value 3-5
Keeping a component on display 3-6
External I/O connections 3-6
Temperature ok 3-7
External standby 3-7
Starting up the motor (ok ext) 3-8
Motor speed set point reference (ref ext) 3-9
Failures output in pump control card 3-9
4. MELTER OPERATION 4-1
General information 4-1
Loading the adhesive into the cylindrical hopper 4-2
Starting up the melter 4-3
Melter displays 4-4
Temperature display for each component 4-5
Alarm display 4-5
Display and adjustment of the cylinder working temperature 4-6
Temperature adjustment 4-6
Programming the melter parameters 4-7
Setting the clock 4-8
Setting the current day and time 4-8
Programming equipment activation/deactivation 4-9

MA-5081-E B4 NS ADHESIVE MELTER MANUALTABLE OF CONTENTS
Disabling the equipment activation/deactivation program 4-10
Programming the activation/deactivation of the equipment’s standby function 4-10
Disabling the equipment standby function program 4-11
Special function buttons 4-12
Pump start-up 4-13
Pumping control 4-13
Starting up the pump control card 4-13
Pumping safety measures 4-14
Password security 4-14
LED indicators 4-15
Modes of operation 4-16
Mode of operation with internal pumping control and internal speed control 4-16
Mode of operation with internal pumping control and external speed control 4-17
Mode of operation with external pumping control and internal speed control 4-18
Mode of operation with external pumping control and external speed control 4-19
User configuration menu 4-21
Displaying alarms and reset function 4-21
Maximum rpm alarm 4-21
Minimum rpm alarm 4-22
Variator alarm 4-22
Configuring speed ramp 4-22
Programming speed ramp 4-23
Current Vin voltage display 4-24
Regulating the bypass valve 4-24
Adjusting the manual valve 4-25
Pneumatic valve control 4-25
Turning off the melter 4-25
5. MAINTENANCE 5-1
External cleaning 5-1
System depressurisation 5-2

FOCKE MELER GLUING SOLUTIONS TABLE OF CONTENTS
Cleaning the tank 5-3
Changing adhesive type 5-3
Cleaning burnt adhesive 5-3
Emptying the tank 5-4
Cleaning the tank with cleaning pellets 5-4
Filter maintenance 5-5
Pump maintenance 5-6
Leakage inspection 5-6
Gear motor maintenance 5-6
Cleaning the motor fan 5-6
Checking the lubricant 5-6
Recommended lubricant 5-7
Safety Thermostat 5-7
Removing the equipment from its base 5-7
6. TECHNICAL CHARACTERISTICS 6-1
General 6-1
Dimensions 6-2
Melting unit 6-2
Base plate 6-2
Accessories 6-2
Level control system 6-2
7. ELECTRICAL DRAWINGS 7-1
8. PNEUMATIC DRAWINGS 8-1
Components list 8-1
Pneumatic cylinder control system 8-1
Pneumatic by-pass valve control system (optional) 8-2
9. SPARE PART LIST 9-1
A. TANK GROUP 9-3

MA-5081-E B4 NS ADHESIVE MELTER MANUALTABLE OF CONTENTS
B. DISTRIBUTOR UNIT 9-4
C. MOTOR- PUMP UNIT 9-5
D. ELECTRIC PANEL AND AUXILIARY COMPONENTS 9-6
E. WARNING LIGHT UNIT (OPTIONAL) 9-7
EC DECLARATION OF CONFORMITY 10-1

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SAFETY GUIDELINES
1-1
MA-5081-E B4 NS ADHESIVE MELTER MANUAL
1. SAFETY GUIDELINES
General
The information contained in this section applies not only to everyday
equipment operation, but also to any procedure carried out on it, whether for
preventive maintenance or in the case of repairs and the replacement of worn
out parts.
It is very important to observe the safety warnings in this manual at all times.
Failure to do so may result in personal injury and/or damage to the equipment
or the rest of the installation.
Before beginning work on the equipment, read this manual carefully, and in
case of any doubt, contact our Technical Service Center. We are available for
any clarification that you might need.
Keep manuals in perfect condition and within reach of personnel that use the
equipment and perform maintenance on it.
Also provide necessary safety material: appropriate clothing, footwear, gloves
and safety glasses.
In all cases, observe local regulations regarding risk prevention and safety.
Symbols
The symbols used on both the melter/applicator equipment and in this manual
always represent the type of risk we are exposed to. Failure to abide by a
warning signal may result in personal injury and/or damage to the equipment
or the rest of the installation.
Warning: Risk of electrical shock. Carelessness may produce injury or death.
Warning: Hot zone with high temperatures. Risk of burns. Use thermal
protective equipment.
Warning: System under pressure. Risk of burns or particle projection. Use
thermal protective equipment and glasses.
Warning: Important information for the correct use of the system. May include
one or several of the previous hazards, and therefore must be kept in mind to
avoid damage and injury.
Warning: Dangerous area. Risk of entrapment. Carelessness may produce
injury or death.

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1-2
SAFETY GUIDELINES
Mechanical components
The hot-melt installation, which is installed to this device, requires moving
parts that can cause damage. Use the equipment correctly, and do not remove
the safety guards while the equipment is in operation; prevent the risk of
possible entrapment due to moving mechanical parts.
Do not use the equipment if the safety devices are not in place or appear to be
inadequately installed.
For maintenance or repair operations, stop the movement of moveable parts
by turning off the main switch.
The device has no moving mechanical parts, so it does not pose risks to
consider in this section.
Electrical components
The system works with single-phase or three-phase current of a certain
power. Never handle the equipment with the power connected, as this may
result in powerful electrical shocks.
The installation must be correctly grounded.
The installation’s power cable conductors must match the required electric
current and voltage.
Periodically inspect the cables to check for crushing, wear and tear, as well as
to prevent tripping and falls as a result of their placement.
Although the system meets EMC requirements, it is inadvisable to use
devices that transmit high levels of radiation, i.e., mobile phones or soldering
equipment in their vecinity.
Hydraulic components
As this is a pressurized system, precautions related to this type of equipment
must be observed.
Before each operation, always make sure that the adhesive circuit is
completely free of pressure. There is a high risk of hot particle projection,
along with the corresponding danger of burns.
Use caution with the residual pressure that may remain in the hoses when the
adhesive cools. When reheated, there is a risk of hot particle projection if the
outputs are left open.
Pneumatic components
Some equipment uses compressed air to 6 bar pressure. Before any
manipulation, please ensure that the circuit has lost fully air pressure. The
risk of projection of particles at high speed can cause injury to a certain
severity.
Extreme precautions with the residual pressure that could be contained in the
circuit, before disconnecting any pneumatic feeding tube.

SAFETY GUIDELINES
1-3
MA-5081-E B4 NS ADHESIVE MELTER MANUAL
Thermal components
The entire system works with temperatures that can exceed 200°C (392°F).
The equipment must be operated using adequate protection (clothing,
footwear, gloves and protective glasses) that completely cover exposed parts
of the body.
Keep in mind that, due to the high temperatures reached, the heat does not
dissipate immediately, even when the power (in this case, electric) source is
disconnected. Therefore, use caution, even with the adhesive itself. It may
remain very hot, even in a solid state.
In case of burns:
1. If the burn is the result of contact with melted adhesive, do not try to
remove the adhesive material from the skin. Do not try to remove it once
it has solidified either.
2. Cool the affected area down immediately with lots of cold and clean water.
3. Seek medical attention as soon as possible either from the company’s
medical service or the nearest hospital. Provide the medical staff with the
Safety Information Sheet of the adhesive.
Materials
Meler systems are designed for use with hot-melt adhesives. They should
not be used with any other type of material, and especially not with solvents,
which may cause personal injury or damage to internal system components.
Some units are specifically designed to use polyurethane reactive (PUR) hot-
melt adhesives. Using PUR on a unit that is not prepared for that purpose may
cause severe damage to the unit.
When using adhesive, follow the corresponding guidelines found in the
Technical and Safety Sheets provided by the manufacturer. Pay special
attention to the advised work temperatures in order to prevent adhesive
burning and degradation.
Ventilate the work area adequately in order to remove the vapors produced.
Avoid the prolonged inhalation of these vapors.
Always use original Meler components and replacement parts, which
guarantee the correct system operation and service.
Noise emission declaration
The A-weighted emission sound pressure level (LpA) of the unit in operation
does not exceed 70 dB(A) under any circumstances.
The maximum C-weighted sound pressure level (LpCpeak) and the A-weighted
sound power level (LWA) do not exceed values worthy of mention and thus do
not represent a specific risk that must be taken into account.

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1-4
SAFETY GUIDELINES
Intended use
The equipment are designed to be used in the following conditions:
• Hot-melt adhesive fusion and pumping at temperatures up to 200 °C
(392 ºF). Consult with Meler technical service to operate with higher
working temperatures.
• Use of equipment with Meler accessories.
• Installation of equipment according to the security regulations
currently in force and the instructions provided in this manual
(anchoring, electrical connection, hydraulic connection, etc).
• Use of equipment in non-explosive, non-chemically aggressive
environments.
• Use of equipment following the safety instructions indicated in this
manual, as well as on the labels accompanying the equipment, using
adequate means of protection during each mode of operation.
Limited use
The equipment should never be used under the following conditions:
• Use with reactive polyurethane or any other material that might cause
safety or health risks when heated.
• Use of equipment in environments where cleaning is necessary using
water jets.
• Use of equipment to heat or melt food products.
• In potentially explosive atmospheres, aggressive chemical
environments or outdoors.
• Use or operation without adequate safety protection.
• If the person in question does not have the necessary training to use
the unit or to apply all of the necessary safety measures.
Note: Do not modify the equipment or use components that were not supplied
by Meler. For any modification of a component of the equipment or part of the
installation, you must firstly consult the After-Sales Service

2-1
INTRODUCTION MA-5081-E B4 NS ADHESIVE MELTER MANUAL
2. INTRODUCTION
This manual contains information on installing, using and maintaining the B4
NS adhesive melter from Meler.
This equipment is designed to melt 2 kilo blocks of adhesive (Ø128 mm and
height 165 mm). It has a 0.45 litre reserve tank. Moreover, in this B4 version
with gear pump, speed regulation is possible.
The equipment is mainly designed to be used with thermo-reactive PUR based
adhesives in block format.

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2-2
INTRODUCTION
Description
Operating modes
The B4 NS melter can be used in the operating modes described below:
Operating mode_The melter keeps the hot components at the
temperature indicated on the display, which has been preselected
as the desired value. The pump-motor unit remains activated while
it waits for a consumption request via the opening of one or two
application guns.
Internal control of pumping and speed _Switches in the position
ok ‘int’ and ref ’int’. In this mode of operation, the user has full
control of pumping and the set speed of the pump rotation.
Control of internal pumping and external speed_Switches in the
position ok ‘int’ and ref ’ext’. This mode of operation is performed
through internal pumping control and speed control by means of
an external 0-10 V signal sent from the main machine.
Control of external pumping and internal speed_Switches in the
position ok ‘ext’ and ref ’int’. This mode of operation is performed
through external pumping control and manual speed control.
Control of external pumping and speed_Switches in the position
ok ‘ext’ and ref ’ext’. In this working mode, both pumping and
speed are controlled from the main machine. Speed is controlled
by means of an external 0-10 V signal sent from the main
machine.
Standby mode_The hot-melt melter remains in a resting state, with
the materials kept at (programmable) temperature values below the
pre-selected value. The pump remains deactivated.
Alarm mode_The hot-melt melter detects a malfunction and warns
the operator of this event. The pump remains deactivated.
Stop mode_The hot-melt melter remains off, without heating the
materials and with the pump deactivated. The electrical and pneumatic
supply remains activated between the network and the system,
however.
Warning: It is recommended that the equipment is disconnected from the
mains if it is not to be used for a long period of time. This prevents the PUR

2-3
INTRODUCTION MA-5081-E B4 NS ADHESIVE MELTER MANUAL
adhesive from moisture curing and the block from melting, and stops the
already hot air in the melter tank from ascending, possibly inflating the
adhesive bag and causing it to expand when the cylinder moves up.
Melter identification
You will need your melter model and reference when ordering spare parts or
requesting support from our Technical Service Centre.
This data and other technical information can be found on the nameplate
located on the side of the melter base.

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2-4
INTRODUCTION
Main components
1. Front control card.
2. Pumping control card.
3. Cylinder air pressure regulator.
4. Cylinder air pressure gauge.
5. Warning light (optional).
6. Cylinder.
7. Cylindrical hopper (adhesive load).
8. Pressure relief valve (for non-moisture curing
adhesives).
9. Purge valve.
10. Filter pump.
11. Hose- applicator hydraulic connection.
12. Air supply input.
13. Pump system connection switch (optional)
14. Hose- applicator electrical connection.
15. General power switch and power supply
56
7
3
4
1
2
15
14
12
13
11
8
9 10

2-5
INTRODUCTION MA-5081-E B4 NS ADHESIVE MELTER MANUAL
Control panel
1. Tank indicator led.
2. Hose indicator led.
3. Applicator indicator led.
4. Temperature set point.
5. Actual temperature.
6. ON/OFF switch.
7. Standby function.
8. Temperatures ok led.
9. Timer programming.
10. Up/Down arrows for element selection.
11. Up/Down arrows for value modification.
1
2
345
11
8
9
6 7
10

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INTRODUCTION
Pumping control card components
1. Main switch ON/OFF.
2. External start-stop LED.
3. External speed control LED.
4. Pumping permission LED.
5. Up/down arrow keys for selecting values.
6. Left/right arrow keys for selecting options.
7. Speed ramp steps display screen.
8. Speed ramp value selection LEDs (voltage/speed).
9. Voltage/ pump speed/ errors display screen.
10. Pumping control (internal/external) selection.
11. Pumping speed (internal/external) selection.
12. Voltage value display of the external signal of the speed control.
1
2
3
4
98 5
6
7
121110
Optional equipment
To increase the functionality of the B4 NS melters, the following optional
components can be incorporated:
• Detection of low adhesive level (block completely melted) with warning
light.
• Pump system activation via switch on applicator.

3-1
INSTALLATION MA-5081-E B4 NS ADHESIVE MELTER MANUAL
3. INSTALLATION
Warning: The melters are equipment with current technology and with certain
foreseeable risks. Therefore, only allow qualified personnel with sufficient
training and experience to use, install or repair this equipment.
Introduction
The B4 NS melter is supplied with all the components required for its
installation. However, some components must be supplied by the user
depending on the location and connections in each specific installation:
• Melter anchoring screws
• Power cord for electrical power supply
• Pneumatic conduct and connection to compressed air network
• Stranded wire for external electric control functions
• Optionally, a gas venting system
Installation requirements
Before installing a B4 NS melter you must ensure that the space allocated is
suitable for the installation, connection and use of the entire system. You must
also ensure that the electrical and pneumatic supplies meet the requirements
of the melter being installed.
Free space
620 700
600
360
400
840

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INSTALLATION
Electrical consumption
When installing a B4 NS melter, the installation’s total consumption must be
taken into account, including the consumption of the installed hose and
applicator.
Before connecting the melter, make sure that the voltage to which it is to be
connected is the same as that indicated on the equipment’s nameplate.
Connect the melter and check that it is well grounded.
Warning: Risk of electrocution. Even when the melter is turned off, voltage
remains in the input terminals, which could be dangerous when the
equipment is handled internally.
The B4 NS melter should be installed with a power switch to disconnect it
from its power supply source. A circuit breaker should be installed as personal
protection against earth leakages.
The powers associated with these protections are indicated in the table in
section ‘Electrical power supply connection’.
Compressed air
The installation of melters from the B4 NS series requires a non-lubricated
compressed air dryer system with a maximum pressure of 6 bar to supply the
pusher disk cylinder and the pneumatic bypass valve in case of the melter has
one.
Other factors
Other practical considerations should be taken into account when installing
the B4 NS melter:
• Make sure the cylindrical hopper remains accessible to facilitate
changing the adhesive block.
• Position the melter so that it is easy to see the front panel display
where the temperatures and possible alarm signals are shown.
• As far as possible, try to avoid unnecessarily long hoses which
consume a lot of electrical energy and result in high pressure drops.
• Do not install the melter next to powerful heat or cooling sources
which may affect its operation.
• Avoid melter vibrations.
• Make sure that the melter maintenance areas (pump, purging valve,
cylindrical hopper, gear motor, etc.) are easily accessible.