ITC Dositec MP, Dositec MD, Dositec mA, Dositec Q, Dositec PRC User Manual

DOSITEC

ENGLISH

SAFETY RULES

To avoid personal or environmental damages and to guarantee a proper
operation of the equipment, the staff in charge of the installation, set up and
maintenance of the equipment must follow the instructions of this manual,
specially recommendations and warnings explicitly detailed. In additon, specific
instructions for the chemical products to be dosed should be followed.

INDEX

1.- GENERAL DESCRIPTION 4

2.- SHIPMENT 4

3.- TECHNICAL FEATURES 5

4.- OPERATION 6

5.- INSTALLATION 7
Generalities 7
Hydraulic connection 7
Electric conection

8

6.- START UP 10
DOSITEC - MP 11
DOSITEC - MD 12
DOSITEC - mA 13
DOSITEC - Q 16
DOSITEC - PRC

19

DOSITEC - MF

26

7.- MAINTENANCE
List of parts

34

C.E. APPROVAL DECLARATION 39

WARRANTY 39

36

4

1.- GENERAL DESCRIPTION

The dosing pumps DOSITEC are heavy duty, high precission, electric
diaphragm pumps for dosing liquid products.

DOSITEC models:
DOSITEC -MP: Manual Regulation from 0 to100% by potentiometer
DOSITEC -MD: Manual Regulation from 0 to100% by keyboard
DOSITEC - Q: Proportional regulation
DOSITEC - mA: Analogic regulation by a current signal
DOSITEC - PRC: Control PH or ORP(Redox)
DOSITEC - MF: Multifuntion (Manual flow regulation / proportinonal / Analogical

4-20mA / with timer)

DOSITEC dosing pumps are manufactured with materials that can resist most
chemicals products, even acids. They are designed for all sorts of processes
where it is necessary to dose a product into a hydraulic network, such as: food,
textile, chemical industry, water treatments, etc. (See materials in Technical
Features). In case there is any doubt about compatibility of materials with the
products to be used please contact ITC S.L. Technical Service.

The metering pump has been designed to feed liquids with capacities from 0 to
15 l/h and pressures from 0 to 10 bar. They also include a conexion for a level
switch..

2.- SHIPMENT

The original packaging is prepared to transport and storage the goods, if it is
done in dry, aired spaces and far from sources of heat, always keeping the
pump in vertical position.

Inside the pack it is included:

Dosing pump.
Semirigid PE hose, white, lenght 2m.
Flexible PVC hose transparent crystal type, lenght 2m.
Injection valve 3/8” BSP-M
Filter
Manual of instructions

5

3.- TECHNICAL FEATURES

Maximum suction high: 2 m
Minimum injection pressure: 0,5 Bar

• IP 65 protection.

• Ambient temperature temperature: 5-40 ºC

• Standard power supply: 230 V (+/-10%) a.c.50 / 60 Hz single phase.

• Optional power supply:120 V a.c. 50 / 60 Hz single phase. / 12V d.c.

• Liquid temperature temperature: 5-40 ºC

LIQUID ENDS MATERIALS:

DIAPHRAGM: PTFE.
PUMP HEAD: PVDF
NIPPLES: PVDF.
VÁLVES BODY: PVDF
VALVES BALL: Ceramic
O-RINGS: FPM ( available in EPDM)
SUCTION HOSE: PVC flexible.
DISCHARGE HOSE : Polyethylene.
FILTER: Polypropylene

FLOW - PRESSURE

bar2 64 8 10

l/h

10

6

2

14

12 1614 18 20

12

8

4

16

1 53 7 9 11 1513 17 19

9 l/h@10 bar

6 l/h@ 7 bar

2 l/h@ 20 bar

2,5 l/h@ 10 bar

Flow

l/h

2.5
2
6
9

2.5
6

C/min

120
120
120
120
120
120

Pressure

Bar

10
20

7
10
10

7

Stroke

length mm

0.8

1.0

1.0

1.4

0.8

1.0

Power

Watts

37

(0.16A)

58 (0.30A)
37 (0.16A)
58 (0.30A)

24 (2 A)
24 (2 A)

Power

supply Volts

230V AC
230V AC
230V AC
230V AC

12V DC
12V DC

Weight

Kg

3

3.8
3

3.8
3
3

Volum

ml/cycle

0.35

0.28

0.83

1.25

0.35

0.83

130

001

5

172

4.- OPERATION

6

The metering pump is activated by a PTFE diaphragm mounted on a piston of
an electromagnet.

When the piston of the electromagnet is attracted, a pressure is produced in
the pump body with an expulsion of liquid from the discharge valve.
Once the electric impulse is finished a spring brings the piston back to the
initial position, with a recall of liquid through the suction valve.

As the operation is simple the pump does not need lubrication, therefore
maintenance is reduced almost to zero.

The materials used for the construction of the pump make it particularly
suitable for aggressive products.

DIMENSIONS

190

210

5.- INSTALLATION

GENERAL

7

Install the pump in a dry place and well away from sources of heat and, in any
case, at environmental temperatures not exceeding 40°C. The minimum
operating temperature depends on the liquid to be pumped,bearing in mind that
it must always remain in a liquid state.
Place the pump vertically over a rigid surface totally horizontal.

HYDRAULIC CONNECTION

Properly design either in the suction and injection pipe is required, avoiding long
lenght and bending pipes as much as possible.

1

6

4

3

2

1

3

2

4

5

6

1

2

3

4

5

6

PRIMING VALVE INJECTION VALVE

SUCTION PIPE COUNTER-PRESSURE VALVE

SUCTION FILTER INJECTION PIPE

a

b

c

d

ELECTRIC CONNECTION

The electric protection of the motor must be installed and adjusted
following its nominal intensity (overloaded switch disjuntor).

A disconnection dispositive must be installed in case of emergency.

The equipment must be protected to avoid untimely sudden starts.

8

Install a safety valve in a derivation as near as possible
from the pump , in order to protect it and the whole
installation from possible over-pressures. This derivation
Must derive the liquid to a safe place.

To prime the pump, first connect the priming

hose to the priming valve and drive the
other side of the hose to a safety place to
pour the air mixed with product.

Open the priming valve and start the pump

at maximum flow until having only liquid in
the priming outlet.

PRIMING
VALVE

PRIMING
HOSE

Select the most appropiate injection point in
the pipe to inject the product, and place
there a 3/8” part to connect the Injection
valve.

INJECTION
HOSE

3/8”

9

L1 (BLUE)
L2 (BROWN)

YELLOW /GREEN

230V AC

MD Q mA PRC

1

2

3

4

A

B

C

D

E

1

2

3

4

1

2

3

4

1

2

3

4

1­2­3- Pulse input (+)
4- Pulse input (-)

1­2­3- Level switch
4- Level switch

1-Output relay.AL3.NO
2­3-Output relay (Com)
4-

1­2­3- Signal mA (+)
4- Signal mA (-)

1- Alarm relay (NO)
2- Alarm relay (NC)
3- Alarm relay (Com)
4-

Connector BNC
pH sensor
ORP (redox) sensor

1­2­3- Level switch
4- Level switch

1­2­3- Level switch
4- Level switch

1- Output mA (+)
2- Output mA (-)
3- Level switch
4- Level switch

A

B

C

D

E

MF

1­2­3- Ground
4- Reset

1- Alarm relay (NO)
2- Alarm relay (NC)
3- Alarm relay (Com)
4-

1- Flow sensor.
2- Flow sensor.
3- Level switch
4- Level switchl

1
2- Signal input mA (-)
3- Pulse input (+)
4- Pulse input (-)

- Signal input mA (+)

Electrical connection of the dosing pump with electric loads (motors, pumps,
electrovalves...)

To avoid damaging the dosing pump (DP) at the disconnection of other pumps or
electric motors (M), the following diagrams must be used:

Option 1

Option 2

DP

DP

10

6.- START UP AND REGULATION

BASE: Check that the pump is properly secured to the base.

CHECKING THE HYDRAULIC CIRCUIT: Check that all valves are

open and the liquid from priming valves are derived correctly

CHECKING OF PUMP: Visually/hearing check the proper operation of
the pump.

OVER-PRESSURE PROTECTION: Adjust the safety valve to the
correct pressure to protect the installation without exceeding the pump
nominal pressure.

ELECTRIC PROTECTION: Ajust the electric protection to the pump
nominal current.

Replace crystal suction hose with a polyethilene discharge hose. Use
PTFE hose for the suction and discharge.

Previously, take away from inside the pump all water present (if water
is mixed with sulphuric acid, an overtemperature is caused, damaging
the pump.

SULPHURIC ACID DOSIFICATION

11

DOSITEC MP

MANUAL REGULATION DOSING PUMP

Flow regulated with a potentiometer, it control the impulsion frequency. Adjust of
the frequency from 0 to 100%. Special flow regulation at 0-20% frequencies.

1

3

4

2

5

6
7
8
9

1 START
2 STOP
3 Regulation at 20% maximum
4 Regulation at 100% maximum
5 Adjust of the potentiometer in percentage (0-100%)
6 Power LED
7 Injection LED
8 20% regulation LED
9 100% regulation LED

ACCESSORIES

- 1 flexible transparent PVC suction hose 2m

- 1 semirigid white PE injection hose 2m

- 1 injection valve 3/8”

- 1 filter

- 1 user manual

- 1 flexible transparent PVC priming hose.

12

DOSITEC MD

DIGITAL DOSING PUMP WITH MANUAL REGULATION

Flow set with keyboard, from 0 - 100%.

2

3

1

4

5
6

1 Increase value
2 Decrease value
3 START /STOP
4 Display
5 Power LED
6 Injection LED

ACCESSORIES

- 1 flexible transparent PVC suction hose 2m

- 1 semirigid white PE injection hose 2m

- 1 injection valve 3/8”

- 1 filter

- 1 user manual

- 1 flexible transparent PVC priming hose.

LEVEL ALARM

Pump stops, red LED is on when detects no product for 5 seconds. Level sensor
is required.