Emec RACV Instruction Manual

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OPERATING INSTRUCTIONS MANUAL
FOR “RACV” PNEUMATIC DOSING PUMP
Please read it carefully! English language
R3-06-10
This operating instructions contains safety information that if
ignored can endanger life or result in serious injury. They are
indicated by this icon.
Use of this pump with radioactive chemicals is forbidden!
Keep the pump protected from sun and water.
Avoid water splashes.

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NORME CE
EC RULES(STANDARD EC)
NORMAS DE LA CE
Direttiva Basso Voltaggio
Low Voltage Directive
Directiva de baja tensión
Direttiva EMC Compatibilità Elettromagnetica
EMC electromagnetic compatibility directive
EMC directiva de compatibilidad electromagnética
2006/95/CE
2004/108/CE
⎬
⎬
Danger!
GENERAL SAFETY GUIDELINES
In emergencies the pump should be switched off immediately! Disconnect the power cable from the
power supply!
When using pump with aggressive chemicals observe the regulations concerning the transport and
storage of aggressive fluids!
When installing always observe national regulations!
Manufacturer is not liable for any unauthorized use or misuse of this product that may cause injury,
damage to persons or materials.
Caution! Pump must be accessible at all times for both operating and servicing. Access must not be obstructed in
any way!
Feeder should be interlocked with a no-flow protection device.
Pump and accessories must be serviced and repaired by qualified and authorized personnel only!
Always discharge the liquid end before servicing the pump!
Empty and rinse the liquid end before work on a pump which has been used with hazardous or unknown
chemicals!
Always read chemical safety datasheet!
Always wear protective clothing when handling hazardous or unknown chemicals!

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Index
Introduction ................................................................................................................................................................4
Functioning mode .......................................................................................................................................................4
Technical features........................................................................................................................................................4
Pumps connections ....................................................................................................................................................5
Pump’s package..........................................................................................................................................................6
Basic operations .........................................................................................................................................................7
How does it work? ......................................................................................................................................................7
O-rings, maintenance and repair operations.................................................................................................................8
Repair.........................................................................................................................................................................8
Delivery curves ............................................................................................................................................................9
Dimensions ...............................................................................................................................................................10

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Introduction
The “RACV” series dosing pumps are the ideal solution for small and medium dosing of liquid products by compressed air.
Functioning mode:
Technical features:
Pneumatic functioning mode. In the pneumatic area of the pump, the compressed air
produces a diaphragm’s movement that pushes out the liquid through the delivery hose.
The vacuum created by the diaphragm movement takes the liquid inside the pump head
from the suction hose.
Solenoid valve opens and closes air that operates the diaphragm. The solenoid valve
should be driven by a PLC or any other equipment that can operate it with a direct voltage
supplied in pulses, the valve is driven to open to push the diaphragm and then closed to
let the diaphragm go back.
Air consumption: 0,020 liters per injection
Air supply (pressure): 6÷8 bar
Max injection per minute: 120
Working temperature: 0÷50 °C (32°÷122°F)
Ceramic or Stainless Steel double ball valves (Ø6mm)
Liquid ends: PP, Orings (on demand:Viton, EP, WAX)
PP glass filled case box
PTFE membrane
Stroke lenght adjustment
Solenoid valve: 24VAC, 48VDC, 115VAC, 230VAC / 8W (specify)
Power Supply
Ground
Wear always protective clothes as masks, gloves, safety glasses, ear plugs or ear muffs, and
further security devices during ALL installation procedure and while handling chemicals.

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Pumps connections
Delivery hose (PE hard)
Hose nut
Clamping ring
Nozzle
O-ring
Discharge valve connection
to delivery hose
Flow control knob
Air / pump head discharge knob
to discharge hose
to suction hose
Compressed Air input (6x8)
Electrovalve
Manual priming button

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Pump’s package
Included into package::
Commissioning the pump:
Make sure that the pump is fastened into place firmly and will not
vibrate during use!
Ensure that the pump is accessible at all times for operating and
maintenance purposes!
Suction and discharge valves must be in vertical position!
The metering pump must be installed with the pump’s basement on
horizontal position!
Assembly and install hoses:
The suction hose (PVC flexible) should be short and placed
vertical to avoid air bubble collecting!
Calculate cross section and length to ensure that negative pressure in
the suction hose does not reach the vapour pressure for chemical’s feed!
FREE END OF SUCTION HOSE SHOULD BE INSERTED
JUST ABOVE THE BASE OF NOZZLE!
USE ONLY HOSES COMPATIBLES WITH PRODUCT TO DOSE.
PLEASE REFERS TO “CHEMICAL COMPATIBILITY TABLE” OF
PRODUCT TO DOSE!
n.1 1/2” 4x6 or 6x8 foot filter + valve
n.1 1/2” 4x6 or 6x8 injection valve
m 2 delivery hose
m 2 suction hose
m 2 discharge hose
n.1 this operating instruction manual
PLEASE DO NOT TRASH PACKAGING.
IT CAN BE USED TO RETURN THE PUMP.
3 installing modes:
- Horizontal (with bracket) mounting
- Wall mouting
- “DIN” mounting
Multiple pumps installation (side by side)

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Basic operations
PRIMING
To prime the pump without touching chemicals please perform these operations:
- connect all hoses into proper places (delivery hose, suction hose, outgassing hose).
- open outgassing valve and turn on the pump.
- set pump’s single injection at 100%;
- press the priming button until the pump head is filled up.
Connect the pump to the compressed air hose. Let compressed air enter into the pump.
All air inside the pump head will exit through the outgassing outlet. When product will leak from it, close immediately the
outgassing valve. If dosing product is particularly dense, to facilitate the priming, insert on vent pipe a syringe of 20 cc and
suck inside.
DOSING
Pump’s technical features are printed on a label located on pump’s box: model, supply voltage, working counterpressure (Kpa/
bar) and pump capacity (l/h).All these dosing information are calculated by dosing water at 20 °C temperature, at the maximum
counterpressure reported on the label, using the injection valve and the % knob set to maximum. Dosing accuracy is ± 2% l/h
at constant maximum counterpressure and 1 cps flow (max viscosity: 60 cps).
Caution: injection capacity is a constant value but a variation in counterpressure or product’s viscosity may cause
some changes. For further details see “Delivery curves” paragraph.
HOW DOES IT WORK?
“RACV”pneumatic dosing pump works only with compressed air without lubrificant and/or condensed water.Air supply pressure
range must be at 6bar (87PSI) (±10%).
At the max injection/min value, 120 injection/min, the pump has a 0.5 seconds working cycle: 0.25 seconds active (compressed
air is in the pump) and 0.25 passive (compressed air is not in the pump).
Solenoid valve and PLC for compressed air control must be regulated on this values.
SOLENOID VALVE
The solenoid valve should be driven by a PLC or any other equipment that can operate it with a direct voltage supplied in pulses,
frequency must be 2 Hertz with a 50% duty cycle.
Connect the solenoid valve using the standard connector. Attention: solenoid valves can have several power supplies, power
supply is specified on the solenoid valve label.

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O-rings, maintenance and repair operations
The valve sealings are provided in 4 different types to satisfy different chemical compatibility issues.The elastomer that will best
fit the requested needing can be found on the manufacturer compatibility table. Get in touch with customer support if needed.
Elastomer Suggested Usage Manufacturer Code
Fluorocarbon acid based product FP
Ethylenepropylene alkali based product EP
Nitrile wax based product WAX
MAINTENANCE
Every month (when in normal use) pump and accessories should be checked for proper operation.
For a correct maintenance, please perform following tasks:
- check electrical connections
- check liquid end screws
- check discharge line connections
- check discharge and suction valve connections
- check the entire liquid end for leakage
REPAIR
All repair measures must be performed by authorized and qualified personnel. If pump needs to be repaired in
manufacturer’s factory send it only if it has been cleaned and after the liquid end has been rinsed!
If, despite pump’s emptying and cleaning, there are still possible safety hazards the information must be declared on return’s form!
If pump needs a replacement use only ORIGINAL spare parts!

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Delivery Curves
L/h
l/h 06
bar 06
06 06
bar
Single injection 0,83
L/h
l/h 01
bar 06
06 01
bar
Single injection 0,14
L/h
l/h 12
bar 06
06 12
bar
Single injection 1,66
L/h
l/h 03
bar 06
06 03
bar
Single injection 0,42

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Dimensions
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
A A B B
C C D D
E E
F F
Progettato da Controllato da Modificato da, il Data
Edizione Foglio
/
Dimensionale_Racv
Massimo_F 18/02/2009
00
Toll. Gen.
`0.05
Materiale:
POMPA PNEUMATICA
tipo "RACV"
1 2
60.00
162.50
147.80
133.10
53.00
107.00

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 


Rail mounting (DIN)

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