Jesco MAGDOS DE/DX User manual

MAGDOS DE/DX
Solenoid-diaphragm dosing pump
Operating Manual
Read this operating manual before start-up!
To be retained for future reference.
EN 02

Table of Contents
1. Safety instructions.....................................................................................................................................................3
2. Use for intended purpose ..........................................................................................................................................7
3. Function .....................................................................................................................................................................7
4. Dimensioned drawings..............................................................................................................................................8
4.1 MAGDOS DE/DX 01...12.................................................................................................................................... 8
4.2 MAGDOS DE/DX 20...100.................................................................................................................................. 8
5. Technical data............................................................................................................................................................9
6. Delivery characteristic curves ................................................................................................................................10
7. Installation ...............................................................................................................................................................11
7.1 General information ......................................................................................................................................... 11
7.2 Installation location.......................................................................................................................................... 11
7.3 Water meter installation ................................................................................................................................... 12
7.4 Electrical connection ....................................................................................................................................... 12
7.5 Level monitoring.............................................................................................................................................. 12
7.6 Pressure control and pressure relief valves........................................................................................................ 13
7.7 Injection nozzle installation............................................................................................................................... 13
7.8 Installation examples ....................................................................................................................................... 14
8. Operation..................................................................................................................................................................16
8.1 Connections and cable assignments................................................................................................................. 16
8.2 Flow rate setting.............................................................................................................................................. 17
9. Start-up....................................................................................................................................................................19
9.1.1 Automatic venting......................................................................................................................................... 20
10. Shutdown ...............................................................................................................................................................21
10.1 Disposal of old equipment.............................................................................................................................. 21
Device revision ............................................................................................................................................................21
11. Maintenance ..........................................................................................................................................................22
11.1 Replacing diaphragm, MAGDOS DE/DX 01...12............................................................................................... 22
11.2 Checking and replacing deflector plate............................................................................................................ 26
11.3 Valves........................................................................................................................................................... 26
11.4 Correcting stroke length adjustment ............................................................................................................... 29
12. Spare parts.............................................................................................................................................................30
12.1 Spare parts list MAGDOS DE/DX 01...03......................................................................................................... 31
12.2 Spare parts list MAGDOS DE/DX 07...12......................................................................................................... 32
12.3 Spare parts list MAGDOS DE/DX 20................................................................................................................ 33
12.4 Spare parts list MAGDOS DE/DX 40...100....................................................................................................... 34
13. Troubleshooting .....................................................................................................................................................35
Index.............................................................................................................................................................................36
Declaration of No Objection ........................................................................................................................................37
Warranty claim.............................................................................................................................................................38
EC Declaration of Conformity......................................................................................................................................39
2 | Operation & Maintenance Instructions | Table of Contents

1. Safety instructions
1.1 General
This operating manual contains basic instructions to be followed during installation, operation and main-
tenance. It is therefore essential that the Operating Manual be read by the installation technician before
installing and commissioning the pump/system, as well as by the relevant operating personnel/operating
company of the unit. The Operating Manual must remain accessible at the dosing pump/system for refer-
ence at all times.
Besides the general safety instructions in this "Safety" section, the special safety instructions in the other
sections are also to be followed.
1.2 Identification of safety instructions in this operating manual
Failure to follow the safety instructions in this operating manual may result in personal injury or damage to
the environment and the dosing pump/system. Safety instructions are identified by the following symbols:
DANGER!
Indicates immediate danger.
Failure to follow this instruction will lead to death or extremely serious injuries.
WARNING!
Refers to a potentially hazardous situation. Failure to follow this instruction may lead to death or extremely
serious injuries.
CAUTION!
Refers to a potentially hazardous situation. Failure to follow this instruction may lead to minor injuries or
damage to property.
IMPORTANT! or NOTE!
Failure to follow these safety instructions may endanger the machine and its functions.
IMPORTANT!
This indicates additional information that makes work easier and ensures trouble-free operation.
Information attached directly to the dosing pump, such as
• cable markings
• markings for fluid connections
must be followed without fail and must remain fully legible at all times.
1.3 Personnel qualifications and training
The personnel employed for operation, maintenance, inspection, and installation must be suitably qualified
for this work. The responsibilities, areas of competence and personnel supervision must be clearly defined
by the operating company. Personnel who do not have the required know-how must be duly trained and
instructed. If necessary, this can also be done by the manufacturer/supplier on behalf of the operating
company. In addition, the operating company must ensure that the personnel are fully familiar with, and
have understood the contents of this operating manual.
1.4 Important safety instructions
Basic safety precautions should always be followed when installing and using this electrical equipment.
These precautions include the following:
ATTENTION!
Read and follow all instructions!
Keep these instructions in a safe place!
Safety instructions | Operation & Maintenance Instructions | 3

WARNING!
To reduce the risk of injury, do not permit children to use this product unless they are closely supervised at
all times.
WARNING!
Risk of electric shock. Connect the device only to a socket outlet with earthing contact protected by a
ground fault circuit interrupter (GFCI). Consult a qualified electrician if you are uncertain whether the socket
is protected by a GFCI.
Do not bury the cable. Secure cable to avoid damage by lawn mowers, hedge trimmers and other equip-
ment.
WARNING!
To reduce the risk of electric shock, replace the cable immediately if damaged.
WARNING!
To reduce the risk of electric shock, do not use extension lead to connect unit to electric supply; use an
appropriately located socket outlet.
1.5 Hazards due to failure to follow safety instructions
Failure to follow the safety instructions may endanger not only persons, but also the environment and the
device. Failure to follow the safety instructions may invalidate any damage claims. Non-compliance with the
safety instructions may give rise to the following hazards:
• Failure of major functions of the device.
• Failure of required maintenance and repair methods.
• Danger to persons due to electrical, mechanical and chemical effects.
• Danger to the environment due to leakage of hazardous substances.
1.6 Safety-conscious working
The safety instructions contained in this operating manual must be observed. The operating company is
responsible for ensuring compliance with local safety regulations.
Faults that may affect safety must be repaired immediately.
1.7 Safety instructions for the operating company/operator
Leakages of dangerous substances (e.g. aggressive, toxic), for example due to a broken diaphragm, must
be suitably drained away so that they do not cause danger to persons or the environment. Statutory regula-
tions must be observed.
Hazards posed by electric power must be ruled out (for further details, refer to the VDE1) regulations and the
requirements of the local public utilities as well as Section 1.4).
1) German Association for Electrical, Electronic & Information Technologies
1.8 Safety instructions for inspection, maintenance and installation work
The operating company must ensure that all maintenance, inspection and installation work is carried out by
authorised and duly qualified personnel, who have read and understood this operating manual.
The dosing pump must always have come to a complete stop before starting any work on the pump. Always
follow the procedure specified in the operating manual for shutting down the dosing pump/system.
Dosing pumps or systems which convey hazardous media must be decontaminated.
All safety and protective equipment must be reattached and activated immediately after the work has been
completed.
The instructions given in Section 7.2 "Installation location" and Section 9 "Start-up" must be observed
before start-up.
4 | Operation & Maintenance Instructions | Safety instructions

1.9 Unauthorised modification and production of spare parts
The device may only be modified or converted in consultation with the manufacturer. Use only the manufac-
turer's spare parts and accessories. Otherwise the warranty is invalidated.
1.10 Inadmissible operating practices
Any methods of operation other than those described in Section 2 "Proper use" are not permitted and will
invalidate any manufacturer liability under the warranty.
1.11 Dosing of chemicals
CAUTION!
When working on dosing systems, the local accident prevention regulations must be observed and the
specified personal protective equipment must be worn. The following standard protective clothing is recom-
mended, depending on the hazardousness of the metered medium:
Protective clothing Protective gloves Protective goggles
It is recommended that all persons responsible for the installation and maintenance of piping systems,
hoses and accessories wear this protective clothing.
Before working on the dosing pump and system, disconnect it from the mains power supply and prevent it
from being switched on.
CAUTION!
Any chemical still present in the dosing head may spray out when the voltage supply is reconnected. This
may lead to chemical or other burns to the face and hands. Dosing lines must always be connected before
switching on again.
The chemical resistance of the construction materials in the pump must be verified before dosing aggres-
sive media!
The pump dosing head and the system connections and lines may be under pressure. Working on the
dosing system requires special safety precautions and may only be carried out by instructed technical
personnel:
CAUTION!
Chemical may spray out. This may lead to chemical or other burns. Always release the pressure before
starting work on the dosing pump.
Before working on the dosing head, valves and connections, flush the dosing pump with a harmless medium
(water in most cases), to avoid unintentional contact with the metered medium.
WARNING!
Never look into the open end of a clogged line or valve. Chemicals may emerge unexpectedly and cause
chemical or other burns to face and hands.
Before start-up, all screw connections must be inspected for correct tightness and leak-tightness, and must
be re-tightened using an appropriate tool if necessary.
CAUTION!
If connections at the dosing head are loosened during operation, for venting or other reasons, leaking chem-
icals must be removed properly. Only in this way is it possible to effectively avoid the risk of injuries caused
by chemicals and corrosion at the dosing pump. Leaking chemicals may also damage the diaphragm at its
mounting edge.
Safety instructions | Operation & Maintenance Instructions | 5

ATTENTION!
If changing the chemical, check the materials in the pump and other system parts for chemical resistance. If
there is a danger of chemical reaction between the different media, clean thoroughly beforehand.
IMPORTANT!
The lock screw must be retightened after adjusting the stroke length. The setting of the adjusting knob may
otherwise change. thus causing faulty flow rates.
After changing the electrical connections, e.g. removing the level monitor, the threaded cable joint must be
tightened to maintain the protection class of the dosing pump.
DANGER!
Risk of burns. Shock wave: parts may fly off and cause fatal injury. Under no circumstances must the device
be used in potentially explosive atmospheres.
CAUTION!
Hot metal parts may burn your hands. Always disconnect the mains power supply before opening the
magnetic drive and allow the dosing pump to cool down for at least one hour.
CAUTION!
Malfunctions may arise in circuits, magnetic strips or mobile phones if brought into the direct vicinity of the
magnet.
1.12 Scope of delivery
IMPORTANT!
Carefully unpack the dosing pump and any accompanying accessories ordered, so that small parts are not
left inside the packaging. Compare the delivery content with the delivery note immediately. If there are any
discrepancies, determine the cause.
The following are part of the scope of delivery:
• Dosing pump MAGDOS DE/DX
• Suction and discharge side connections
• Operating Manual
6 | Operation & Maintenance Instructions | Safety instructions

2. Use for intended purpose
The device is intended for the following purpose only: the conveying and dosing of chemicals. Operating
safety is guaranteed only if the device is used for its intended purpose. Use for any other purpose is not
permitted and will invalidate any liability under the warranty. The operating conditions described in section 5
"Technical Data" must be observed!
3. Function
Dosing pumps are used to add chemicals in precisely metered quantities in various processes. Its universal
control system allows flexible use of MAGDOS DE/DX in all applications. The dosing rates range from 0.1 to
115 litres per hour. The precise metered quantities at different backpressures can be derived from Section
6 "Delivery Characteristic Curves".
①Solenoid coil
②Magnet armature
③Stroke adjustment
④Electronics
⑤Drain pipe
⑥ Suction valve
⑦Dosing head
⑧Discharge valve
⑨Diaphragm
⑩Spring
Electronics ④of MAGDOS DE/DX controls coil ①of the magnetic drive with a pulsating characteristic.
Magnet armature ②presses diaphragm ⑨to the left, thus displacing liquid in dosing head ⑦. The liquid
passes through discharge valve ⑧into the discharge line. After the solenoid is switched off, spring ⑩
returns armature ②and diaphragm ⑨to their initial position. Stroke adjustment ③limits the backward
movement of the solenoid armature. A negative pressure is produced in dosing head ⑦and liquid is drawn
in through suction valve ⑥. Leaks due to diaphragm rupture are discharged in a controlled manner through
drain pipe ⑤.
Function overview
MAGDOS DE MAGDOS DX
Internal operation 0...100%
Control with pulse frequency (relay contacts) Yes
Pulse step-up and step-down No 1:64 ... 64:1
0/4...20 mA actuation No Yes
Level monitoring Dual
Alarm relay optional
Display optional
⑧
⑨
⑦
⑥
① ② ③
④
⑤
⑩
Use for intended purpose | Operation & Maintenance Instructions | 7

4. Dimensioned drawings
4.1 MAGDOS DE/DX 01...12
Connection
L
Nominal
diameter Type Size
DN 4 *
Hose clip
4/6 13
DN 6 6/12 23
6/9 34
*) Only use on the intake side on DE/DX 12, all dimensions in mm
4.2 MAGDOS DE/DX 20...100
75,5Ø
120
170,5
140
8 8
24 70
44
118
D
B
L A L
108, 5
C
MAGDOS Mate-
rial A B C D Connection L
Type Size
DE/DX 20 PVC 155 89 310 87 DN 6 Hose clip 6/12 55
1.4571 135 Screw-in thread G 1/4 i 25
DE/DX 40/100 PP 280 152 337 105
DN 10 Pipe bonded d 16 i
22
DN 15 d 20 i
1.4571 148 310 Screw-in thread G 1/2 i
All dimensions in mm
O 77 70
q
140~
90
84 q
L108 L
98~
140~
255~
118~
100
233~
Ø6
8 | Operation & Maintenance Instructions | Dimensioned drawings

5. Technical data
MAGDOS DE/DX 01...100 Unit 01 03 07 2 4 8 12 20 40 100
Delivery rate at max. pressure * l/h 0.1 0.46 0.72 1.86 3.9 6 12 20.2 50.4 115
Max. delivery pressure * bar 10 6 10 10 10 10 4 10 4 1.5
max. stroke frequency rpm 100 70
Suction head for non-gassing media m
water
col.
3 2 1.2
Max. supply pressure
(∑ static and dynamic)
mbar 800 700 400 200 100 0
Voltage supply V AC 115 or 230. +/- 10 %. 50/60 Hz
Power cable 2 m cable with:
- Shock-proof plug. 230 V AC
- with UL/CSA connector. 115 V AC
Power consumption 230 V AC W21 30 70
115 V AC 33 66
Max. current consumption
during dosing stroke
230 V AC A2.3 4.1
115 V AC 3.6 7.4
Soldered fuse 230 V AC AT 0.8 T 2
115 V AC T 1.6 T 4
Protection class IP 65
Insulation class F
Input pulse duration ms > 30
Solenoid excitation time
per pulse
230 V AC ms 60 160
115 V AC 80 190
Fault signalling relay
with changeover contact
(optional)
230 V AC
A
2.5
115 V AC 2.5
Voltage, level monitoring connection V DC 5. for potential-free switching outputs
Voltage, pulse input V DC 5. for potential-free switching outputs
Load for 0/4...20 mA input Ω 150
Max. ambient temperature °C 40
Max. temperature of the medium °C 50 (35 with PVC parts)
Weight Plastic kg 2.9 approx. 10.5 12.5
Stainless steel 3.5 approx. 12 20
Max. sound pres. level, depressurised dB(A) 58 66 61
Max. sound pres. level at test pres. dB(A) 60 68 62
* The precise metered quantities can be derived from the Delivery Characteristic Curves, Section 6.
Technical data | Operation & Maintenance Instructions | 9

6. Delivery characteristic curves
The delivery characteristic curves refer to water at 20 °C (68 °F). The delivery capacity depends on the
medium (density and viscosity) and temperature. Dosing pumps must therefore be gauged in litres for the
application.
DE/DX 01
0
1
2
3
4
5
6
7
8
9
10
0,0 0,004 0,008 0,012 0,016 0,020 0,024 0,028
DE/DX 03
0
1
2
3
4
5
6
7
8
9
10
0,0 0,02 0,04 0,06 0,08 0,10 0,12
DE/DX 07
0
1
2
3
4
5
6
7
8
9
10
0,0 0,04 0,08 0,12 0,16 0,20
DE/DX 2
0
1
2
3
4
5
6
7
8
9
10
0,0 0,1 0,2 0,3 0,4 0,5
DE/DX 4
0
1
2
3
4
5
6
7
8
9
10
0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9
DE/DX 8
0
1
2
3
4
5
6
7
8
9
10
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8
DE/DX 12
0
2
4
6
8
10
0,0 0,5 1,0 1,5 2,0 2,5 3,0
DE/DX 20
0
1
2
3
4
5
6
7
8
9
10
0,0 1,0 2,0 3,0 4,0 5,0 6,0
DE/DX 40
0
1
2
3
4
5
6
7
8
9
10
0 2 4 6 8 10 12 14 16
DE/DX 100
0
1
2
3
4
5
6
7
8
9
10
0 5 10 15 20 25 30 35
10 bar
6 bar
2 bar 6 bar
4 bar
3 bar
2 bar
1 bar
10 bar
8 bar
6 bar
4 bar
2 bar
10 bar
8 bar
6 bar
4 bar
2 bar
10 bar
8 bar
6 bar
4 bar
2 bar
10 bar
6 bar
4 bar
2 bar
4 bar
3 bar
2 bar
1 bar
1,5 bar
1,0 bar
0,5 bar
10 bar
8 bar
6 bar
4 bar
2 bar
4 bar
3 bar
2 bar
1 bar
Stroke length Stroke length
Stroke length Stroke length
Stroke length Stroke length
Stroke length Stroke length
Stroke length Stroke length
ml/stroke
ml/stroke
ml/stroke
ml/stroke
ml/stroke
ml/stroke
ml/stroke
ml/stroke
ml/stroke
ml/stroke
10 | Operation & Maintenance Instructions | Delivery characteristic curves

7. Installation
7.1 General information
Local rules and regulations must be taken into account when selecting a dosing pump for designing a
system, and for installation and operation. This applies to the selection of the appropriate materials for the
dosing pump, the handling of chemicals, and electrical installation. The technical data of the dosing pump
(Section 5) must also be taken into consideration. The system must be designed accordingly (e.g. pressure
loss in lines depending on nominal diameter and length).
NOTE!
The size of the lines used in connection with MAGDOS DE/DX 12 must be at least DN 6. DN 4 should only
be used for short lines (up to 1 m) and low-viscosity media (<20 mPa s) .
The designer and operating company are responsible for ensuring that the entire system, including the
dosing pump, is designed in such a way that neither system equipment nor buildings are damaged in the
case of chemical leakage due to the failure of wearing parts (e.g. diaphragm rupture) or burst hoses. If the
chemical system represents a potential source of danger, the installation must be designed in such a way
that no unreasonable consequential damage occurs, even if the dosing pump fails. We therefore recom-
mend installing leakage monitors and collecting pans.
The drain socket of the dosing head must be visible so that a diaphragm rupture can be detected. Drainage
should be able to flow freely downward through the drain pipe.
To increase the dosing accuracy and to ensure the functional reliability, we recommend the use of additional
accessories. These include pressure control valves, pressure relief valves, leakage monitors and low level
indicators, as shown in the installation examples.
Always use appropriate tools for the installation of plastic connection parts. To avoid damage, never apply
excessive force.
IMPORTANT!
Plastic parts (especially PVC parts) can be tightened and loosened more easily by applying lubricant (e.g.
silicone grease) to the thread beforehand.
To prevent seizing, threaded stainless steel parts (e.g. dosing head and valves) must be lubricated before
being assembled (e.g. with PTFE spray).
ATTENTION!
Compatibility of the lubricant with the metered chemicals must be checked.
7.2 Installation location
The installation location of the dosing pump must be easily accessible by operating and service personnel.
It is possible that the running noise of the dosing pump is transmitted through the piping, thus resulting in a
disturbing noise level. Installation of the dosing pump on a wall bracket should be preferred in such cases.
For the same reason, it is recommended to mount the pump on an outside wall and not on inside walls with
adjacent rooms used for residential purposes. When installing the dosing pump below the liquid level, care
must be taken to ensure that chemical leakages due to a broken diaphragm cannot cause any damage
(collecting pan, leakage sensor).
It is also possible to mount the pump directly on the chemical tank.
Pay attention to the maximum permissible ambient temperature of the dosing pump (refer to Technical
Data). Radiant heat from apparatus and heat exchangers must be shielded so that heat from the dosing
pump can be dissipated sufficiently. Avoid exposure to direct sunlight. If the dosing pump is installed
outside, provide a roof to protect it from the effects of weather.
Installation | Operation & Maintenance Instructions | 11

7.3 Water meter installation
The MAGDOS DE/DX can be controlled by any commercially available contact water meter. To avoid interfer-
ence or faulty pulses, the dosing pump must not be fixed directly to the water meter. Direct mounting is
acceptable if a spacer is used, which guarantees a distance of 50 mm (refer to Section 7.8 Installation
Examples). The pump should therefore be mounted on a chemical supply tank or a wall bracket. The pulse
sequence of the water meter must be tuned to the maximum stroke frequency of the dosing pump (Section
5 Technical Data).
7.4 Electrical connection
DANGER!
Risk of burns. Shock wave: parts may fly off and cause fatal injury. Under no circumstances must the
MAGDOS DE/DX be used in potentially explosive atmospheres.
The electrical connection of the dosing pump must be made in accordance with locally applicable require-
ments and may only be carried out by technical personnel.
NOTE!
The dosing pump must be plugged into a grounded power outlet. The 230 V version of the MAGDOS DE/DX
is connected by a shockproof earthing-pin plug. The 115 V version is equipped with a UL/CSA connector.
NOTE!
The dosing pump is double insulated and earthed.
Signal cables must not be laid parallel to high-voltage current lines or mains cables. Lay supply and signal
lines in separate channels. An angle of 90° is required at line crossings. If signal lines are longer than 2 m,
shielded cables must be used.
7.5 Level monitoring
If a level monitor is connected, the jack plug has to be covered by a plastic sleeve in order to maintain the
protection class. The required sleeve is part of the level monitor (also in combination with a suction line).
With the level monitor connected, the dosing pump stops if the chemical level in the supply tank is low, in
order to prevent air bubbles from entering the suction line and the dosing head. The red LED is lit. As soon
as the level contact closes again, the dosing pump restarts.
The level sensor must be designed as a max. N.O. contact.
MAGDOS DE/DX is equipped with a low level alert. When the first contact opens, the red LED begins to
flash, the dosing pump continues delivering medium and the alarm relay (optional) is activated. The pump
only stops when the second contact opens. The red LED lights continuously.
The "low level alert" function is not available when using a 2-pin connector and a simple float switch.
NOTE!
A dummy plug must be attached if a float switch is not connected. The dosing pump is delivered with a
dummy plug already attached. If a float switch is to be connected, the dummy plug has to be removed
before inserting the jack plug.
MAGDOS DX
The level LED has a dual function in connection with this dosing pump. It also begins to flash when the input
signal drops below 4 mA in 4…20 mA mode (cable break).
12 | Operation & Maintenance Instructions | Installation

7.6 Pressure control and pressure relief valves
Pressure control valves are used to optimise the dosing process. They are used
• to increase the dosing accuracy in the case of fluctuating backpressure.
• when the dosing lines are long, in order to prevent excess delivery, since the accelerated medium
continues moving due to its own inertia even after the delivery stroke has ended.
• to prevent siphoning, if the supply pressure is higher than system pressure.
Pressure relief and safety valves are used for overload protection of the dosing pump and the associated
valves and lines. They prevent inadmissible pressure rises in the delivery side system of the dosing pump;
for example, if shutoff valves close while the pump is running, or if the injection nozzle is clogged.
The PENTABLOC is a combination valve and performs the functions of a pressure control valve and a safety
valve. It also integrates functions such as anti-siphoning, pressure relief and dosing control.
7.7 Injection nozzle installation
Injection nozzles are used to inject the metered medium into the main flow, while at the same time acting
as non-return valve. The injection nozzle is usually mounted from the top into the main line. Mounting from
below is recommended only for media that have a tendency to crystallise, in order to prevent air bubbles
from being trapped in.
For media that tend to contaminate the injection nozzle, we recommend installing an injection nozzle that
can be shut off and removed for maintenance purposes.
①
②
① Injection nozzle mounted from above, ② Injection nozzle mounted from below (for media that tend to crystallise)
Installtion | Operation & Maintenance Instructions | 13

7.8 Installation examples
④ ① ③
②
On chemical tank
①
⑨ ⑩
On wall bracket
⑧
⑥
⑦
⑤
①
⑩
On water meter
①MAGDOS DE/DX
②Chemical tank
③Suction line with integrated low level indica-
tion
④Priming aid
This equipment allows easy start-up of small
dosing pumps in particular. The air cushion
serves as a pulsation damper.
⑤Multifunctional valve PENTABLOC
⑥Injection nozzle with non-return valve
⑦Water meter with contact unit
⑧Spacer for water meter
The spacer is required to avoid the drive
solenoid affecting the water meter contact.
⑨Wall bracket
⑩Mounting kit MAGDOS pump base
14 | Operation & Maintenance Instructions | Installation

Mounting on wall bracket, tank adapter and pump base
Mounting kit MAGDOS pump base
consisting of:
4x square nut ①
4x setscrew ②
②
①
Installation example
①MAGDOS DE/DX
②Chemical tank
③Suction line with integrated low level indication
④Priming aid
⑤Electrical agitator
⑥Pulsation damper
⑦Injection nozzle with non-return and shutoff valve
⑧Pressure control valve
⑨Pressure relief valve (safety valve)
① ⑤
②
④
⑦ ⑨ ⑧
③
⑥
Installation | Operation & Maintenance Instructions | 15

8. Operation
① Mains cable
② Cable for fault signalling relay (optional)
③ Socket for level probe
④ External control
(on DX model also with mA-signal input)
⑤ Stroke length adjustment with scale and
lock screw
⑥ Rotary switch for setting mode and stroke
frequency
⑦ Digital display (optional)
⑧ Function LED, level (red)
⑨ Function LED, power supply (green)
⑩ Calibration table
⑪ Selector switch for external actuation (only
on MAGDOS DX)
8.1 Connections and cable assignments
Control unit MAGDOS DE/DX Standard version CSA version
①L Voltage supply (2 m cable)
230 V AC, 50/60 Hz
or 115 V AC, 50/60 Hz
BR (brown) BK (black)
N BU (blue) or GY (grey) WH (white)
PE GN/YE (green/yellow) GN/YE (green/yel-
low)
②R0 Break
contact
Fault signalling
relay
(1.5 m cable)
R0 RW R1
Fault
R0 RW R1
Operation
BU (blue) or GY (grey) WH (white)
Rw Changeo-
ver
contact
BR (brown) RD (red)
R1 Make
contact
BK (black) BK (black)
⑧ ⑦
⑤
⑨
⑥
⑩
⑪
④③②①
16 | Operation & Maintenance Instructions | Operation

Connection Connector Housing Cable
③Level input 3.5 mm jack
plug
Socket
①② ③
Manufacturer's accessories
①Main alarm RD (red)
②Low level alert WH (white)
③Ground (GND) BK (black)
④External control RCA
(MAGDOS DE/DX
20 ... 100)
Socket
① ②
1.5 m 2-wire (cable included in delivery)
①Input (+) BN (brown)
②Ground (GND) WH (white)
CSA version Plug
1.5 m, 3-wire (cable included in delivery)
1 = input (+) BN (brown)
2 = - BK (black)
3 = ground (GND) BU (blue)
Cable
(MAGDOS DE/DX 01 ... 12)
WH (white) = Pulses
BN (brown) = Ground (GND)
NOTE!
The protection class of the control unit is only ensured if the connection ports are protected by caps or the
standard connectors are inserted.
8.2 Flow rate setting
The flow rate is defined by two parameters:
1. Volumetric displacement per dosing stroke
The stroke length adjustment limits the movement of the diaphragm. Adjusting the stroke length does not
have a linear proportional effect on the stroke volume. The volume per dosing stroke is derived from the
delivery characteristic curves or the delivery table on the dosing pump.
To adjust, undo the lock screw, set the required value and retighten the lock screw.
ATTENTION!
Do not adjust stroke length while the pump is stationary but rather only during the delivery stroke.
2. Stroke frequency
Changing the stroke frequency has a directly proportional effect on the flow rate. It is either set to a fixed
value or defined by an external pulse generator (e.g. electronic controller or contact water meter).
To ensure effective adaptation of the dosing pump to the respective process, the MAGDOS can be set to
different stroke frequencies in internal mode.
Operation | Operation & Maintenance Instructions | 17

8.2.1 Operating mode selection
MAGDOS DE
The rotary switch ⑥defines the stroke rate (0..100/min) infinitely variable in internal mode.
External mode is activated by turning to the left-hand stop (beyond the detent). A dosing stroke is executed
for every incoming pulse in external mode.
IMPORTANT!
Pulses are not saved when the dosing pump is driven at more than the maximum pulse rate (see Technical
Data). When driven at higher pulse rates, the pump does not continue running at a constant maximum
frequency but rather dosing strokes are omitted.
MAGDOS DX
In addition to the functions of the MAGDOS DE, optional functions can be selected for external operation
with the MAGDOS DX. The additional selector switch has the following settings:
① Pulse 1:1
② Pulse multiplication 2 / 4 / 8 / 16 / 32 / 64
③ Pulse division 2 / 4 / 8 / 16 / 32 / 64
④ Signal input 0..0.20 mA or 4..0.20 mA
⑤ Pump stop at “0”
8.2.2 Digital display (optional)
The display shows the different operating modes and possible error messages.
Display Meaning
080 Stroke frequency of 80 strokes per minute in either "internal control" or "DC signal control"
mode
1.1 External control mode at ratio of 1:1
1.16 External control mode with pulse multiplication factor of 16
8.1 External control mode with pulse division factor of 8
E - L Tank empty message
I - E Input signal < 4 mA with 4-20 mA actuation (e.g. cable break)
OFL Input signal > 20 mA with 0/4...20 mA actuation
OFF Selector switch position "0"
②
①
③
⑤
④
18 | Operation & Maintenance Instructions | Operation

9. Start-up
CAUTION!
Personal protective equipment as specified by the applicable accident prevention regulations must be worn
during all work on the dosing pump/system!
Protective clothing Protective gloves Protective goggles
1. For initial start-up, set the pump to internal operation at 100% stroke frequency and allow the pump to
prime. It is advisable to set the stroke length to "10" for this purpose. If the dosing pump does not prime,
switch off the dosing pump, unscrew the discharge valve and fill the dosing head with fluid. If non-hazard-
ous, the medium itself can be used; otherwise use a neutral medium that will not disturb the process. (In
many cases, water can be used.)
WARNING!
Chemical may spray out. This may lead to chemical or other burns. Ensure that the discharge line is depres-
surised before disconnecting.
Then reinstall the discharge valve, switch on the dosing pump and allow it to prime. (A priming aid is recom-
mended. See installation examples)
2. If there is a vent valve integrated in the dosing head or installed as a separate fitting, open it while the
dosing pump is operating until fluid comes out. Then close it again. In the case of outgassing media, allow
the fluid to flow off continuously (about 1 drop per 1 - 3 strokes). The outflowing chemicals are to be
returned to the supply tank. Use a hose connector for this purpose.
3. When trouble-free delivery is established, set the required flow rate and tighten adjusting knob. For initial
approximation refer to the calibration table attached to the dosing pump which shows the stroke length
setting for a selected flow rate per stroke (ml/pulse) as a function of backpressure. Intermediate values are
to be determined.
Example:
Required dosing quantity: 0.07 ml/pulse at 4 bar (58 psig). The value determined
for stroke length is 8.0 and must be set on the stroke length adjusting knob when
the dosing pump is operating.
NOTE!
Depending on the installation, the chemicals used and the temperature of the medium, these values may
differ and must be checked under operating conditions.
4. In the case of externally controlled dosing pumps (e.g. water meter mode), set pump to "external". To
check operation, initiate water flow by opening a water valve and wait for pulse output.
5. The manufacturer of the dosing equipment is not responsible for damage due to excessive or insufficient
flow rates at the dosing pump or incorrect or faulty installation of peripheral fittings
0,02 ------ 3,03,7
bar
psig
ml
pulse
Hublänge
stroke length03
0,10 7,09,0 ------
0,08 5,57,1 9,0 ---
0,07 4,86,0 8,09,0
0,05 3,34,2 5,66,5
0,04 2,53,2 4,55,4
0,03 --- 2,43,6 4,5
1246
0,06 4,05,0 6,67,5
0,09 6,38,0 9,9 ---
14,5 29 58 87
Start-up | Operation & Maintenance Instructions | 19

9.1.1 Automatic venting
The automatic venting facility (standard features on DE/DX 03, 07 otherwise optional extra) consists of a
non-return ball valve. The ball ③rolls against the seat during the suction stroke and away from it during the
pressure stroke. The stroke length of the ball is determined by the screw ②. Starting from the position at
which the screw blocks the ball, turn the screw by half a turn to the left and start the dosing pump. Depend-
ing on the
operating pressure that may already be applied at the discharge valve ③, the dosing pump is primed until
until the metered medium emerges from the vent outlet ⑤. Now tighten screw ②until medium no longer
emerges and the dosing pump assumes normal delivery.
To regularly dispose of gas collected in the dosing head, a certain permanent, unavoidable leakage quantity
is to be established (approx. 25 - 30% of the dosing rate, corresponding to approx. 0.5 - 0.7 l/h on the
DE/DX 2) which flows through the vent outlet ⑤via a 4/6 PVC hose back to the supply tank. The leakage
quantity is set by carefully turning screw ②and locking nut ④.
The leakage quantity depends on the operating pressure. If the operating pressure is subject to fluctuations,
the consistency of the leakage quantity and therefore of dosing itself can be increased by installing a pres-
sure control valve. The pressure control valve should be set approx. 0.5 bar above the maximum expected
operating pressure.
⑤
④ ③② ①
20 | Operation & Maintenance Instructions | Start-up