GHL Doser Maxi User manual

GHL Doser Maxi
Instruction Manual
Valid from Firmware Version 1.27
As of 2017-12-13

Instruction Manual GHL Doser Maxi
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Table of Contents
GET THE MOST OUT OF YOUR GHL PRODUCT ..........................................................................................................................5
1SAFETY INSTRUCTIONS ...................................................................................................................................... 5
1.1 SAFETY OF CHILDREN AND VULNERABLE PERSONS.........................................................................................................6
1.2 INTENDED USE.......................................................................................................................................................6
2GENERAL ........................................................................................................................................................... 7
2.1 ABOUT THIS MANUAL .............................................................................................................................................7
2.2 FEATURES .............................................................................................................................................................7
2.3 SCOPE OF DELIVERY ................................................................................................................................................7
2.4 IMPORTANT OPERATING INSTRUCTIONS......................................................................................................................8
3CONNECTIONS OF THE GHL DOSER MAXI .......................................................................................................... 8
3.1 GENERAL ..............................................................................................................................................................8
3.2 CONNECTION OVERVIEW .........................................................................................................................................8
3.2.1 Level Sensor Connection (Stand Alone only) ..........................................................................................10
3.2.2 Temperature Sensor Input (Stand Alone only) .......................................................................................10
3.2.3 PAB Ports .................................................................................................................................................11
3.2.4 USB Connection (Stand Alone only) .......................................................................................................11
3.2.5 GHL Control Pad Connection (Stand Alone only)....................................................................................11
3.2.6 Power Supply Input..................................................................................................................................11
4ACTIVATION .................................................................................................................................................... 12
4.1 INSTALLING THE GHL DOSER MAXI..........................................................................................................................12
4.2 CONNECTING THE TEMPERATURE SENSOR.................................................................................................................14
4.3 CONNECTION TO THE POWER SUPPLY.......................................................................................................................15
4.4 CONNECTION OF PAB-DEVICES...............................................................................................................................15
4.4.1 What is the PAB.......................................................................................................................................16
4.4.2 How does the ProfiLux Aquatic Bus work ................................................................................................16
4.4.3 Exemplary Connection of GHL Doser Maxi with PAB Devices..................................................................17
4.5 STATUS INDICATORS OF THE GHL DOSER MAXI..........................................................................................................17
4.5.1 System-Status- LED on the housing cover ...............................................................................................17
4.5.2 PAB Status LEDs on the Back Panel .........................................................................................................18
5OPERATION ..................................................................................................................................................... 19
5.1 GENERAL OPERATING INSTRUCTIONS .......................................................................................................................19
5.1.1 Dosing amount ........................................................................................................................................19
5.1.2 Maintenance ...........................................................................................................................................19
5.2 OPERATION ON THE DEVICE ....................................................................................................................................20
5.3 OPERATING THE DEVICE VIA THE SOFTWARE GCC.......................................................................................................20
5.3.1 Requirements ..........................................................................................................................................20
5.3.2 GCC General Information ........................................................................................................................20
5.4 CONNECTION BETWEEN THE GHL DOSER MAXI AND PC ..............................................................................................21
6ASSIGN FURTHER PAB DEVICES TO THE STAND ALONE .................................................................................... 26
6.1 REQUIREMENTS ...................................................................................................................................................26
6.2 ASSIGNMENT.......................................................................................................................................................27
6.3 PUMP NUMBERING...............................................................................................................................................28
7WARRANTY/LIABILITY ..................................................................................................................................... 29
8ADDITIONAL INFORMATION............................................................................................................................ 29

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8.1 HELP AND INFORMATION .......................................................................................................................................29
8.2 FIRMWARE-UPDATE .............................................................................................................................................29
9TECHNICAL DATA............................................................................................................................................. 30

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Congratulations on your Purchase
Thank you for purchasing our product and allowing us to help support your path to
successful fishkeeping!
With a GHL Doser Maxi, you now own a highly professional piece of equipment that is more
than capable of assisting you in your daily monitoring and maintenance routines.
We are confident that our product will help make your hobby more efficient, safe, and
ultimately help you spend more time enjoying your aquarium or terrarium.
Enjoy Your Passion!
GHL Takes Care of the Rest

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Get the Most out of your GHL Product
GHL products are well-equipped with simple and intuitive features. In order to get the most
out of our products, we recommend you read our Programming Guide and Instruction
Manual together. Doing so will provide you with the most profound details for using our
product. These and other helpful documents can be downloaded from our website’s
download area (Support->Downloads). Visit our homepage at www.aquariumcomputer.com,
our Support Forum or meet us on Facebook to become a GHL-Product expert and fully utilize
the full range of functions offered from your device!
1Safety Instructions
Please read these instructions carefully before operating the GHL Doser Maxi.
GHL products are built with maximum security and safety in mind. However, product safety
for this device can only be guaranteed if you follow these guidelines.
Anyone who uses this device must become familiar with the following safety instructions and
the operation of the device.
Failure to follow these instructions will void any warranty claims.
Be sure to read over the safety instructions provided by this ProfiLux manual; including the
respective manuals of other equipment manufacturers.
In this manual, the following symbols are used:
TIP
General note, tip or advice.
WARNING
Important note for operation, to avoid damage to the equipment, and for
your safety.
DANGER
Warning that non-compliance can result in injury or damage to the device.

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1.1 Safety of Children and Vulnerable Persons
WARNING
This equipment must not be used:
•By small children and vulnerable persons with limited physical,
sensory or mental capabilities.
•By people who are unfamiliar with the functions of this product.
1.2 Intended Use
The GHL Doser Maxi is intended exclusively for use in the domestic area. GHL Doser Maxi may
only be operated with GHL accessories.
Make sure to place the device away from splashing water, moisture or other liquids.
WARNING
Moisture indicators are placed inside the unit and will change color when
exposed to excessive moisture.
Removing these indicators will void all warranty claims.
DANGER
•Make sure that the power cord is plugged into a grounded outlet;
otherwise you could get an electric shock or cause a fire.
•Protect the power cable from damage (For example, twisting,
kinking, clamping). Please also pay attention to the joints and
connections to the device.
•Disconnect the power plug by pulling the plug, not the cable.
•Never attempt to disassemble, repair or alter the equipment by
yourself.
•Do not insert sharp objects into the electrical contacts and ports.
DANGER
•If the unit falls into the aquarium or has been exposed to moisture
or humidity, first turn off the power to the device via the fuse or
circuit breaker, then pull the power cord.
•Never touch the power plug with wet hands.

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For your own safety, please look at the hazard prevention and safety instructions in the
chapters that follow.
2General
2.1 About this Manual
These instructions apply to the GHL Doser Maxi Stand Alone and GHL Doser Maxi Slave.
2.2 Features
•LED Status indicator
•2x ProfiLux Aquatic Bus Ports (Black Western sockets)
•1x Level sensor port (Double allocation)
•1x USB/LAN Connection
•1x GHL Control Pad Connection
•1x Connection for power supply unit (24V DC hollow socket)
•2x Magnetic Stirrer Connections
2.3 Scope of Delivery
Please check the contents of this box. The following items should be included:
•GHL Doser Maxi
•24V Power supply
•Supplementary sheet
Please check to make sure all items are in perfect condition. In case of damage, immediately
contact the dealer from whom you purchased the GHL Doser Maxi.
•If the device has become wet or dirty, thoroughly clean and dry it
with a dry cloth.
DANGER
•The device may not be operated if it has been damaged in any way
(e.g. damaged power cord or plug, liquids or objects have gotten
into the interior, device has been exposed to excessive moisture,
the normal operation is disturbed, or the device has been dropped.)

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WARNING
A damaged GHL Doser Maxi or components may not be put into operation
under any circumstances.
2.4 Important Operating Instructions
WARNING
To ensure safe operation, the following guidelines must be followed.
Disregarding these safety guidelines, will result in voiding your warranty. In
which case, the manufacturer rejects any responsibility or liability for
damage!
3Connections of the GHL Doser Maxi
3.1 General
Applies to all connections:
3.2 Connection Overview
WARNING
•Connect only original accessories from GHL.
•Do not use excessive force when plugging-in connectors. If a plug
contact does not fit, it is imperative to check that you have chosen
the correct socket.
DANGER
•Incorrect connection (For example inserting a USB connector into a
PAB connector) can lead to damaging the GHL Doser Maxi.
•A repair caused by this, is not covered under warranty and will
therefore incur repair charges.

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The GHL Doser Maxi includes the following connection ports:
Stand Alone:

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Slave:
3.2.1 Level Sensor Connection (Stand Alone only)
Level sensors (D2.1 SA-only) are used for monitoring and maintaining set water levels. These
sensors can be connected to the on-board Level port (Green Mini DIN socket). A single Level
port can either accept a single sensor or two separate sensors. With a PL-LY splitter cable
(not included), two level sensors can be connected to a single Level sensor port and be
independently controlled.
3.2.2 Temperature Sensor Input (Stand Alone only)
The white BNC socket is where a Digital Temperature sensor can be connected.
TIP
•Place the sensors in an area where water can constantly circulate
around them.
•To prevent algae growth, it is best to place the sensors in a dark
spot. For mounting, an open external filter would be a good place.

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•To ensure proper sensor measurement, attach the sensor
perpendicular to the water surface.
•Make sure that the cable connection of the sensor is not immersed
in water under any circumstances.
•Many sensors are very susceptible to interference due to their low
level signals. To provide the most accurate measurements, please
have enough distance between the sensors/cables and sources of
interference. These can include: Electronic ballasts, power lines,
pumps, consumer electronics, etc. False readings can be avoided by
following these precautions.
3.2.3 PAB Ports
The black RJ45 Western sockets are where PAB devices can be connected. For example,
additional Slave Dosers can be connected via the PAB-port. For more information, please
refer to the "Connection to PAB" section.
3.2.4 USB Connection (Stand Alone only)
The GHL Doser Maxi can be connected to a PC via USB cable. This means that all settings can
be configured comfortably using GHL Control Center. GCC software can be downloaded free of
charge from our website’s download area.
3.2.5 GHL Control Pad Connection (Stand Alone only)
A GHL Control Pad can be connected here.
3.2.6 Power Supply Input
24V DC hollow socket for connection to the power supply. Use only the original power supply
for supplying power to the GHL Doser Maxi device.
DANGER
•Connecting a non-GHL branded power supply may lead to the
destruction of the GHL Doser Maxi!
•A repair caused by this is not a guarantee and is therefore subject
to a charge.

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4Activation
4.1 Installing the GHL Doser Maxi
The device must be protected from water at all times!
Mount the Doser in a water-protected area. When selecting the mounting material, make
sure that you have adequate sizing and stability. Make sure that the unit cannot fall into the
water during assembly or normal use.
If the device is placed inside an aquarium cabinet, make sure that it is placed in an area free
from splashing water; moisture or liquids that can penetrate.
GHL Doser Maxi as well as its accessories are destroyed by excess moisture or excess
atmospheric humidity - Please observe the technical data and notes below!
To ensure maximum safety and operation, the following regulations must be followed!
Failure to follow the safety guidelines will result in VOIDING your warranty. The manufacturer
rejects any responsibility or liability for damages resulting from misuse!
Powered equipment and water can become a dangerous combination if precautions are not
taken. It is therefore essential to supply power to all mains-operated devices which are
operated in the aquarium or in the vicinity of the device via a residual current circuit breaker!
In order to avoid any danger, all mains-operated devices must be disconnected from the
mains; all plugs must be disconnected! When working in the basin, it can never be ruled out
that a heating element, a pump, or a luminaire is defective.
As shown in the illustration below, Dosers and dosing containers should always be
positioned carefully to ensure that the dosing container contents do not drain into the tank,
- e.g. in case of unexpected events.

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Select the tubing suitable for your application and attach it to the dosing pump. To do this
loosen the screwing on the tube connections and insert the tubes as far as possible onto the
nipples. Make sure that the tube connections cannot be loosened and turn the screwing back
on. Avoid tensile loading.
Make sure the tube connections fit snug and cannot come apart - push the dosing tubes
onto the tube nozzles as far up as possible and avoid pulling on them.
The pumps of the Doser are self-priming. To facilitate the suction of the dosing liquid, the
tube leading into the dosing tank should be kept as short as possible on the suction side.
In order to prevent backflow through the siphon effect, the dosing tube in the tank should
not reach directly into the aquarium water on the pump side.
Please also note the following notes:
Optimal Doser Arrangement

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TIP
•Please ensure good access to the connections of the device
•Please consider the maximum cable lengths of the connected PAB
cables, sensors etc. when selecting the installation site
•Additional sensor cable extensions (BNC2 cables) and PAB cables are
available in different lengths to fit your needs. They are available
online in our GHL Store (For US customers, GHL USA Store).
WARNING
•To ensure proper operation, the connection cables should never be
kinked, crimped, or positioned in an unsuitable way.
4.2 Connecting the Temperature Sensor
Connect the sensor connection cable into the corresponding BNC connector socket.
DANGER
Make sure to run a drip loop for all cables and lines coming from the
aquarium. Cables and tubing must be routed in a way that prevents water
from entering electrical or electronic parts!
DANGER
Products that are already powered should never be pulled by the cable.
This may cause malfunction or damage the connected products and the
GHL Doser Maxi.
They should only be pulled by the plug connected to the power socket.
GHL Doser Maxi and its accessories are destroyed by moisture or excessive
humidity.
DANGER
•Sensor plugs must not be wet or damp when connecting to the
socket.
•Do not use force.

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4.3 Connection to the Power Supply
Connect the GHL Doser Maxi using the supplied power adapter to the power supply. Insert
the DC plug into the designated 24V DC hollow socket on the rear panel and connect the
power connection cable with the plug to the power outlet.
4.4 Connection of PAB-Devices
The GHL Doser Maxi includes two PAB-ports for connecting additional GHL Doser Maxi Slave,
GHL Doser 2/2.1 Slave or KH Director devices via ProfiLux Aquatic Bus.
•Only connect Digital Temperature Sensors from GHL to the
temperature sensor socket of GHL Doser Maxi
•Always connect the sensors to the respective jacks, as this could
damage the device or the sensors.
•A repair caused by this is not a guarantee and is therefore subject
to a charge.
DANGER
•Ensure that the mains voltage matches the voltage specified on the
identification plate located on the bottom of the device.
•Connect the device only to a properly installed and grounded outlet
with a minimum rating of 10 A.
•Never use a different voltage supply. Incorrect polarity or voltage
can destroy the device.
•Use only the supplied AC adapter.
DANGER
•The connection of a power supply that is not part of the GHL Doser
Maxi leads to the destruction of the GHL Doser Maxi!
•• A repair caused by this is not a guarantee and is therefore subject
to a charge.

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4.4.1 What is the PAB
PAB is an interference free CAN-Bus-System which allows for extremely secure data transfer
between all PAB devices such as additional GHL Doser Slave or KH Director devices. The range
can be up to 100 m (300 FT).
•PAB cables are not included and must be purchased.
TIP
•Be sure to obtain suitable PAB cables in the appropriate lengths to
meet your needs.
•PAB-cables are available online at GHL Store (EU) and GHL USA Shop
(US)in different lengths from 0.5 m up to 50 m.
4.4.2 How does the ProfiLux Aquatic Bus work
The system works according to the master-slave principle. The master unit is always a GHL
Doser Maxi Stand Alone, GHL Doser 2/2.1 Stand Alone or a ProfiLux Controller (starting from
model ProfiLux 3), to which all other bus participants as GHL Doser Maxi Slave, GHL Doser 2.1
Slave or KH Director can be subordinated as a slave unit.
PAB devices are always connected in series. This means that all PAB devices must be
connected to the PAB cables linearly with each other. The first PAB device is connected via a
PAB connection cable with one of the PAB ports of the next party. The PAB works bi-
directional; this means every PAB jack can be used for input or output. The next participant is
connected again at the free PAB port of the previous participant, and so on.
The last device of the PAB therefore always has an unoccupied PAB connection.
The order of the devices can be freely selected. Also several ProfiLux Controllers can be
connected to the bus.
The PAB provides a line connection via the single PAB participants from one end to the other.
A ring or star topology of the PAB bus is not allowed.
DANGER
•PAB devices must always be linearly connected to each other.
•The last device on the PAB must always provide a free PAB port.

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4.4.3 Exemplary Connection of GHL Doser Maxi with PAB Devices
4.5 Status Indicators of the GHL Doser Maxi
The GHL Doser Maxi includes two status indicator lights which are located on the housing cover
and the back of the device.
4.5.1 System-Status- LED on the housing cover
The LED-backlit GHL Logo in the housing cover of the GHL Doser Maxi lights up in different
colors.
The various colors can show you at a glance, the condition of your aquarium.
•Never connect the last two PAB devices through an additional PAB
connection cable.
•Such a ring connection leads to malfunctioning and is not allowed.

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The color and blink codes shown depend on the particular Doser Firmware.
For the meaning of the blink codes, please refer to the Support-> FAQ section of our
homepage www.aquariumcomputer.com.
4.5.2 PAB Status LEDs on the Back Panel
Located on the back panel of the GHL Doser Maxi, next to the
connection of the temperature sensor are another two LEDs that
provide information about PAB connection status and PAB
communication status.
The upper yellow LED indicates proper communication within
the PAB connection. The lower green LED provides information about the status of the PAB
communication.
Status
Meaning
DANGER
•Never leave your aquarium or terrarium unsupervised for an
extended amount of time.
•The maximum amount of time without personal view depends on
how long your aquarium, terrarium, or pond can survive without
significant damage, even when errors occur.
•Always remember that technology can fail and therefore
malfunctions can never be ruled out!
Power failures, incorrect settings, damage (For example, by water or
overvoltage) or simply an unexpected operating situation can lead
to fatal damage.
•The manufacturer declines any liability for (consequential) damage
or loss arising in connection with the use of the GHL Doser Maxi, as
far as permitted by law

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Yellow LED flashes
GHL Doser Maxi GHL Doser Maxi receives PAB
commands
Green LED is ON
GHL Doser Maxi GHL Doser Maxi is ready for operation
Green LED flashes quickly
GHL Doser Maxi is started, firmware update
Green LED flashes every second,
yellow LED is OFF
GHL Doser Maxi has not received PAB commands for
more than 30 seconds
Both LEDs are OFF
GHL Doser Maxi has no supply voltage
5Operation
5.1 General Operating Instructions
5.1.1 Dosing amount
The amount of fluid that can be dispensed by a single pump is determined by the selected
motor speed. Depending on the chosen speed, the Doser Maxi dosing pump can dispense
about 320 ml dosing liquid precisely adjustable to 0.1 ml within one minute.
5.1.2 Maintenance
The pumps are largely maintenance-free. It is sometimes advisable to clean the inside of the
pumps from dust and other contaminants.
The pumps may be lubricated with vaseline petroleum jelly to reduce operating noise!
Tubes, pumps and motors are wear parts, the life time depends on the use frequency,
flow quantity and environmental conditions.
DANGER
•When malfunctions (e.g. insufficient flow, losing prime, leakage,
increased operation noise) or mechanical damages occur the wear
parts must be replaced.

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5.2 Operation on the device
The buttons on the front of the device allow for manual operation of
the pumps. This allows you to quickly top up, vent the tube or suck in
liquid.
5.3 Operating the Device via the Software GCC
Full device settings and functions are accessible via the software GHL Control Center (GCC),
which is available for download free of charge in the download area (support-> downloads)
of our homepage www.aquariumcomputer.com.
5.3.1 Requirements
You must use the appropriate GHL Control Center software version which supports the
firmware of the respective GHL Doser Maxi.
GCC supports the following operating systems: Microsoft Windows Vista® and Windows 7®,
Windows 8®, Windows 10®.
A connection to the GHL Doser Maxi can be established via the following PC interfaces:
•USB
•WLAN/LAN
5.3.2 GCC General Information
With the Load button, the settings of the GHL Doser Maxi are read out and the program
displays are updated. With Save, the settings you have made in the program are transferred
to the device.
Due to the maintenance-friendly design all wear parts can be
replaced easily, all wear parts are available as accessories.