ProMinent Mikro g/5a Bedienungsanleitung

Page 1

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

ProMinent®

Table of contents Page

EC Conformity Declaration 2

1. Operating the pump 4

1.1 Sectional drawing and legend 4

1.2 Explanation of symbols on pump front panel 5

2. Safety instructions 5

3. Mechanical construction and function 6

3.1 Description of function and operation 6

3.2 Connection and initial operation 7

3.3 Operating conditions and directions for use 8

3.4 Minor faults, causes and remedies 9

3.5 Installing the liquid end / feeding end plunger packing 12

3.6 Installing liquid end / feeding end Bal Seal 14

3.7 Installing axial plunger sealing Bal Seal and plunger 15

4. Technical data sheets 16

4.1 Determining the feed capacity 16

4.2 Nomograms 17

4.3 Performance data 19

4.4 Electrical data and Enclosure rating 19

4.5 Pump specific data 20

Appendix:

Instruction manual “ProMinent®gamma/ 5a”

Brochure with measuring sheet “ProMinent®mikro g/5a”

Instruction Manual

ProMinent®mikro g/5a Precision feeding pump

DIN EN ISO 9001

70 100 M 502

Part No. 987909 ProMinent Dosiertechnik GmbH ·Im Schuhmachergewann 5-11 ·D-69123 Heidelberg BA M5 003 10/97 GB

Page 2

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

Page 3

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

MG5A

Series:

MG5a = mikro g/5

Version a

Pump size: Section 4

1st and 2nd figure =

Backpressure (bar)

3rd to 6th figure =

Capacity (ml/h)

400150

180600

061500

Material TT....

max. 10 bar backpressure

Material: Section 4

SS 1= Stainless steel mate-

rial No. 1.4571, with

PTFE packing, pure

white

SS 2= Stainless steel mate-

rial No. 1.4571 with

PTFE packing, gra-

phite

SS 3 = Stainless steel with

Bal-Seal seal

TT 1= PTFE + 25 % carbon

with PTFE packing,

pure white

TT 2= PTFE + 25 % carbon

with PTFE packing,

graphite

TT 3= PTFE + 25 % carbon

with Bal-Seal seal

Control type:

1 = Option type

2 = Option type with LCD

lighting

Control variant:

0 = Manual + external + pause

1 = As 0 + Analog

0...20 mA, 4...20 mA

2 = As 0 + Analog

0 - 60 mV, 0 - 1 V, 0 - 10 V

= Special version

---------------------

Electrical connection:

power cable 2 m long

A = 230 V ±10 % 50/60 Hz

Euro plug

B = 230 V ±10 % 50/60 Hz

Swiss plug

C = 230 V ±10 % 50/60 Hz

Australian plug

D = 115 V ±10 % 50/60 Hz

USA plug

= Special version

---------------------

Transparent cover

version:

0 = Standard

1 = With lock

Valve spring:

0 = No spring

1 = With 2 valve

springs

1.4571 0,1 bar

Pulse control:

0 = Without pulse control

1 = With pulse control

Timer:

Separate operating instructions

0 = Without timer

1 = With timer

Relay switching mode:

0 = No relay

1 = Fault indicating relay, releasing

2 = Pacing relay, operating

3 = Fault indicating relay, operating

4 = Timer relay, operating

Please observe the parts of the operating instructions concerning your particular device.

Fix type identification plate here

Note:

The type identification plate displayed here is identical to that of the supplied pump thus facilitating distinct allocation between the operating

instructions and pump. Please enter the type identification code specified under „Type“ on the type identification plate in the blank line below.

In order to find the description of the properties of the delivered pump quickly and reliably, mark the identification code features concerning

your pump in the following table.

Page 4

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

1 Operating the pump

1.1 Sectional drawing and legend

1 LCD read out

2 Stroke length adjusting knob

3 Program selector key

4 Up/Down keys

5 Stop/Start key

6 Pulse indicating & pilot light, yellow

7 Fault/lack of chemical indicating light, red

8 Power supply

9 Connector for "External/Analog" and remote "on/of" control

with dummy connector

10 Float switch connector, and dummy connector

11 Connector for flow monitor - not available

12 Connection thread (PG 9) for relay output and plug

13 Housing

14 Long stroke solenoid

15 Liquid end with suction and discharge connectors

17 Back-pressure valve with bleeding (17a)

18 Dampener

19 PTFE plunger packing or Bal Seal

20 Oxide ceramics metering plunger

21 Head disk

23 Electronic control with microprocessor

24 Fuse

25 Short description

6421 357 17a 17 15 19 20 18 21 14 13 24 23 25

8 9 10 11 12

2348-2.3

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ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

1.2 Explanation of symbols on pump front panel

Stroke length adjustment

Enclosure rating IP 65

Pilot and pulse indicating light /Pacing relay - optional

Fault indication

Power supply

Connector for external/analog and remote On/Off control

Float switch connector

Connector for flow monitor (curr. not available)

Relay output for peripheral systems

2 Safety instructions

Warning:

Pumps must be accessible at all times for operation and service. Accesses

may not be closed off or blocked!

Warning:

If hazardous or unknown metering media are used, always first empty out the

liquid end and rinse it out for maintenance and repair work!

Observe the safety data sheets of the metering fluids!

Warning:

When metering dangerous or unknown fluids, protective clothing must be

worn when working on the liquid end (glasses, gloves)!

Attention:

Only set the stroke length when the pump is running when the setting bolt of

the metering stroke is briefly relieved!

Please note:

Only use the gripper rings and hose nozzles specified for the respective hose

diameter as well as original hoses with specified hose dimensions and wall

thickness as otherwise the stability of the connection ist not guaranteed!

Avoid reducing the hose sizes!

For long lines and highly viscous media a higher line diameter or a pulsation

dampener should be used!

Caution:

Max. operating pressure 6 bar for 1/8” and 1/6” PTFE lines, applicable to

plug-on system on pipe connection nipple as on mikro g/5a and gamma/ 4

SK pumps.

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ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

3 General description

3.1 Description of function and operation

ProMinent®mikro g/5a solenoid-driven plunger-type metering pump for liquid media

consists of the following components:

Power end

- Housing (13)

- Long stroke solenoid (14)

- Electronic control with microprocessor (23)

- Dampener (18)

- Stroke adjustment (2)

Feeding end

- Liquid end with suction and discharge connectors (15)

- Metering plunger (20)

- Back pressure valve (17)

The pump output has a pulsating flow profile. For every pulse generated by the

electronic circuit a magnetic field is built up in the solenoid coil, and the moveable

supported thrust piece and armature are attracted. The pump plunger displaces the

media in the liquid end through the discharge valve and the balls of the suction valve

close. When the pulse ends the magnetic field becomes de-energised and the thrust

piece with armature and plunger is returned to its original position by means of a

spring. This causes the media to be sucked into the liquid end, the balls on the

discharge side are closed - suction stroke. The oil dampening guarantees an equal

stroke movement for the full stroke length and thus precise metering even with

varying working pressure. The flow output per stroke can be present in a range of

100-2% by means of the stroke length adjusting knob. The stroke length is maximum

10.00 mm.

Stroke length set 0%

0.00 mm

Stroke length set 33%

3.30 mm

Stroke length set 33.2%

3.32 mm

Stroke length set 100%

10.00 mm

release

fix

2350-4

Page 7

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

Important: Changes to the stroke length should only be made while the pump is

operating, when the adjustment bolt is temporarily relieved during the metering

stroke.

In the internally controlled, or manual mode, the stroking rate can be varied with the

keys (4) from 0-50 strokes per minute. The settings can be repreated with quartz

accuracy. The output flow is proportional to the stroking rate. The operation and

programming takes place as described in the enclosed instruction manual “ProMinent®

gamma/ 5a”. For the mikro g/5a however the maximum number of strokes per

minute is 50 as opposed to 120 as maximum metering rate and the flow monitor is

omitted.

Operating instructions:

Instruction manual “ProMinent®gamma/ 5a” page 50-73,

Terminal plan page 35

Typical installations page 27-31

3.2 Connection and initial operation

Screw the back pressure valve onto the liquid end. Assemble the metering pump on

a chemical tank or a bracket using screws and washers with a 5 mm diameter. The

valves of the liquid end must always be in a vertical position in order for them to

operate smoothly.

Connect suction and discharge lines.

Installing PTFE tubing on PTFE liquid end

Push screw fitting and sliding ring onto PTFE tube. Heat up the flange pin which

comes with the delivery package to approx. 60-80 °C. Then press the tube with

screw fitting and sliding ring onto the warm flange pin. To press it on a non-slip sand

paper or similar can be used. Please note: The tube should not be bent in doing so.

Connecting thread for screw fitting UNF 1/4”-28.

Installation of VA piping

When laying piping the VA piping length must be adjusted and fitted on the space

available. To cut piping lines it is best to use a piping cutter. For connection to the

feeding end first remove the PTFE tube with nipple. Push terminal nut, thrust collar

and bracing ring onto the pipe. Push the end of the pipe right into the bore. Then

place the thrust collar and the bracing ring on the connection. Screw on terminal nut

and tighten.

2369-4

Flange pin

Detail „X”

M 5:1

max. 5.3 dia.

„X”

Sliding ring

Screw fitting

Connecting thread UNF 1/4”-28

PTFE tube

2-3 mm

Page 8

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

If present connect the float switch or contact/control cable to the pump after

removing the dummy connector or protective cap. The connectors for the contact/

control cable (9) and float switch (10) must be occupied at all times either by a

shunted dummy connector or by the connected control or signal cable and float

switch. For this reason dummy connectors should be kept once they have been

removed. Set the desired flow output using the respective nomogram (see technical

data). Select the desired electronic function in accordance with the following

description:

Sucking and bleeding:

Plug in power into mains socket and set stroke length to 10.00 mm. Then press the

“STOP” key (5) to avoid uncontrolled pumping. Loosen bleed screw (17a) on the

back pressure valve (half a turn). Start automatic quick-priming by simultaneously

pressing the Up and Down keys (4). Keep the keys depressed until the media comes

out of the liquid end. Close the bleed screw.

Important: Do not allow the pump to run dry for a long period as otherwise the

plunger is subjected to increased wear.

Important: Particular care must be taken during the initial operation procedure to

ensure that only Bal-Seal seals are used on pumps for metering demineralised water

(TT3, SS3).

Note: If the metering pump is equipped with valve springs, the intake line must be

filled during initial operation. Self-priming is not possible!

3.3 Operating conditions and directions for use

The admissible ambient temperature is -10 °C (only for media with a freezing point

< -10 °C) up to + 45 °C. If higher temperatures are to be used, the maximum stroke

rate must be lowered from the maximum frequency, for each degree C by approx.

2 strokes per minute.

Relative humidity: 10-92 %, not condensing.

If the pump has been disconnected from the power supply, even after years the

pump always returns to the last mode selected when it is switched on again.

On/off switching by means of connection function is possible with the universal

control cable and voltage-free contact. Switching elements with voltage-free

contact or transistor with open collector. The contact load is approx. 0.5 mA at 5V.

If the pump is to be connected parallel with an inductive power consumer, such as

a solenoid valve or an electric motor, the metering pump must be electrically isolated

when other loads are switched on. The power supply must therefore take place via

an auxiliary contactor or a relay. If this is not possible a varistor (part no. 71.09.12.7)

or a RC combination (0.22 µF/ 470 Ohm) must be connected parallel to render the

harmful induced voltage of the power consumer harmless.

VA-pipe 1/8” or 1/16”

Thrust collar 1/8” or 1/16”

Bracing ring 1/8” or 1/16”

Terminal nut 1/8” or 1/16”

2370-4

Page 9

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

Suction capacity

The maximum suction lift of the ProMinent®mikro g/ 5a metering pump with the

liquid end filled is 4-6 m depending on the type of pump (see technical data).

The suction capacity with the liquid end empty is lower (see technical data).

The pump cannot prime against a head.

If the pump feeds into a pressurised system and has accidentally sucked in some

air, this air will only be compressed in the liquid end and no feeding will take place.

In this case the bleed screw on the back-pressure valve is opened about half a turn

and is bled by quick priming (simultaneously pressing the Up and Down keys) until

the suction line and liquid end are filled, free of bubbles. Then retighten the bleed

screw.

If a float switch with early warning is used, the pump will switch into the early warning

status if the first switch point is reached. When the second switch point is reached

(after about 20 mm) the pump switches off so that no air can enter the line system

or the liquid end.

There is opening pressure at the suction and, if the fluid level in the chemical tank

in the operating mode is located above the metering pump and if there is a pressure-

loaded suction line. In this case the back-pressure should be so high that a minimum

differential pressure of 1.5 bar exists. Otherwise an additional back-pressure valve

or a spring-loaded injection valve with an appropriate opening pressure is to be

used.

Important: A back-pressure valve or a spring-loaded injection valve is not a device

which closes absolutely tightly. For this reason the suction side must be fitted with

an isolating valve which is closed when the pump is at a stillstand.

In order to change an output flow which has been set and possibly confirmed by

calibration and to return to the exact same original value, changing the stroking rate

is an option as this is digitally processed and reacts totally linear without mechanics.

3.4 Minor faults, causes and remedies

Pump does not prime in spite of full stroke

movement and proper air bleeding:

Crystalline deposits due to valves drying out. Take suction hose temporarily out of

the chemical tank and rinse out feeding and well. If there is no improvement

disassemble valves and clean them.

Pump does not move, yellow LED does not illuminate,

no indication in the LCD readout:

Check the mains voltage. Have the fuse checked by authorised customer service

personnel and if necessary have it exchanged.

Caution: Only use types which suit the voltage shown on the name plate. If the fault

cannot be remedied by replacing the fuse, have the electronic circuit or whole pump

checked in the factory.

No flow output although yellow indicating light

is flashing:

The stroke lenght is set to zero or too low a valve. Increase stroke length by means

of the stroke adjusting knob (2). Air could have been trapped in the liquid end. This

can be remedied by bleeding as described in section “Suction capacity” (2.3).

Page 10

ProMinent®mikro g/5a

Precision feeding pump Instruction manual

mikro g/5a

Red fault indicating light goes on:

Take note of the flashing fault annunciation on the display.

Further hints see instruction manual g/5a.

Float switch does not switch off the metering pump

when the minimum filling level is reached:

Float is blocked: Remove deposits and clean float.

Other information for operating and maintenance

Changing liquid end and plunger

1. While the pump is working set the stroke length to zero, this blocks the

plunger

2. Push the sliding lock to the front, over the plunger coupling.

3. Disconnect plunger bayonet coupling by pressing and turning to the left.

4. Loosen the knurled screws in front of the liquid end.

5. The liquid end together with the plunger can be pulled off.

6. Install the new or cleaned end in reverse sequence.

2378-4

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