VERDER VERDERAIR CONT-EX User manual

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at www.verderliquids.com

VA-C manual_rev2_2020_UK_(uk)

Solid machined air operated diaphragm pumps

VERDERAIR CONT-EX

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 2

Pump Matrix

Atex

Warnings

Installation

Operation

Maintenance / repair

Trouble shooting

Parts and kits

Torque Values

Exploded views

Dimensions

Performance charts

Technical data

Customer services & guarantee

TABLE OF CONTENTS

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 3

PUMP MATRIX

Before putting your pump in operation,

check the identication plate (ID) on the pump. The

ID is mentioning the year of construction, the serial

number and the construction code of the pump.

Use the matrix below to dene the components

of your pump. Make sure the wetted parts of the

pump are compatible to the pumped liquid.

NOTE:

In case of doubt, please contact your

local supplier. (www.verderair.com)

To build a pump code, please use the

below coding system or use the pump

congurator on www.verderair.com.

PUMP CODING VA-C

Pump size Housing and center section valve material Diaphragm material

10 : 3/8" GG : Conductive Polyethylene TF : PTFE ball valve TO : PTFE overmolded

20 : 1/2" EP : EPDM ball valve EO : EPDM overmolded

50 : 3/4" CV : PE cylinder valve

130 : 1 1/4" SV: PTFE spring loaded valve

SS : SS316 ball valve

EXAMPLE : VA-C20GG TF TO

ID-Plate of Pump

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 4

ATEX

All pumps of the CONT-EX range are manufactured

from Conductive Polyethylene and are ATEX

certied II 2G/2GD Ex h IIC/IIIC T70° Gb/Gb

Db. The pumps have to be grounded following the

instructions on page 8.

When using conductive diaphragms at the liquid

side, no restrictions are applicable.

When using non - conductive diaphragms, the

following protective measures have to be taken

into account:

Pumped liquid must be conductive or soluble in

water

Dry running have to be prevented by means of

monitoring systems which are placed in the pump

system

WARNINGS

The following warnings are for the setup, use,

grounding, maintenance, and repair of this

equipment. The exclamation point symbol alerts

you to a general warning and the hazard symbol

refers to procedure specic risk. When these

symbols appear in the body of this manual, refer

back to these warnings. Additional, product-

specic warnings may be found throughout

the body of this manual where applicable.

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To

help prevent re and explosion:

Use equipment only in well ventilated area.

Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and

plastic drop cloths (potential static arc).

Keep work area free of debris, including solvent, rags and gasoline.

Do not plug or unplug power cords, or turn power or light switches on or off when ammable

fumes are present.

Ground all equipment in the work area. See grounding instructions.

Use only grounded hoses.

If there is static sparking or you feel a shock, stop operation immediately.

Do not use equipment until you identify and correct the problem.

Keep a working re extinguisher in the work area.

Static charge may build up on plastic parts during cleaning and could discharge

and ignite ammable materials and gases. To help prevent re and explosion:

Clean plastic parts in a well ventilated area.

Do not clean with a dry cloth.

WARNING

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 5

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

Do not operate the unit when fatigued or under the inuence of drugs or alcohol.

Do not exceed the maximum working pressure or temperature rating of the lowest rated

system component. See Technical Data in all equipment manuals.

Use uids and solvents that are compatible with equipment wetted parts. See Technical Data

in all equipment manuals. Read uid and solvent manufacturer’s warnings. For complete

information about your material, request MSDS from distributor or retailer.

Do not leave the work area while equipment is energized or under pressure.

Turn off all equipment and follow the Pressure Relief Procedure in this manual when

equipment is not in use.

Check equipment daily. Repair or replace worn or damaged parts immediately with genuine

manufacturer’s replacement parts only.

Do not alter or modify equipment.

Use equipment only for its intended purpose. Call your distributor for information.

Route hoses and cables away from trafc areas, sharp edges, moving parts, and hot

surfaces.

Do not kink or over bend hoses or use hoses to pull equipment.

Keep children and animals away from work area.

Comply with all applicable safety regulations.

PRESSURIZED EQUIPMENT HAZARD

Fluid from dispense valve, leaks, or ruptured components can splash in the eyes or on skin

and cause serious injury.

Follow Pressure Relief Procedure in this manual, when you stop the pump

and before cleaning, checking, or servicing equipment.

Tighten all uid connections before operating the equipment.

Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

THERMAL EXPANSION HAZARD

Fluids subjected to heat in conned spaces, including hoses, can create a rapid rise in

pressure due to the thermal expansion. Over-pressurization can result in equipment rupture

and serious injury.

Open a valve to relieve the uid expansion during heating.

Replace hoses proactively at regular intervals based on your operating conditions.

WARNING

MPa/bar/PSI

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 6

WARNING

PLASTIC PARTS CLEANING SOLVENT HAZARD

Use only compatible water-based solvents to clean plastic structural or pressure-containing

parts. Many solvents can degrade plastic parts and cause them to fail, which could cause

serious injury or property damage. See Technical Data in this and all other equipment

instruction manuals. Read uid and solvent manufacturer’s warnings.

TOXIC FLUID OR FUMES HAZARD

Toxic uids or fumes can cause serious injury or death if splashed in the eyes or on skin,

inhaled, or swallowed.

Read MSDS’s to know the specic hazards of the uids you are using.

Route exhaust away from work area. If diaphragm ruptures,

uid may be exhausted with air.

Store hazardous uid in approved containers, and dispose of it according

to applicable guidelines.

Always wear impervious gloves when cleaning equipment.

BURN HAZARD

Equipment surfaces and uid that’s heated can become very hot during operation. To avoid

severe burns:

Do not touch hot uid or equipment.

Wait until equipment/uid has cooled completely.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing,

or when in the operating area of the equipment to help protect you from serious injury,

including eye injury, inhalation of toxic fumes, burns, and hearing loss.

This equipment includes but is not limited to:

Protective eyewear, gloves, and hearing protection

Protective clothing

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 7

INSTALLATION

Tighten Fasteners Before Setup

Before using the pump for the rst time, check

and retorque the housing bolts (23). Also the valve

stops of the discharge valves (09) have to be

checked. Also after the rst day of operation, after

periods of important temperature uctuations, after

transport, after dismantling of the pump and

after periods when the pump hasn’t been working

the stops, plugs and housing bolts have to be

checked. For the housing bolts please use the

torque values as mentioned on page 18.

Figure 1 showing the installation of the pump

AAir Control pro unit consists of:

- On/of valve

- Pressure regulator

- Throttle valve

- Soft start valve

BIsolating valve

CDischarge gauge

DSuction gauge

EFlexible connection

Recommended installation drawing

PLEASE CHECK THE ADDITIONAL DELIVERED EXPLO-

DED VIEW FOR ALL POSITION NUMBERS

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 8

Mounting

The pump exhaust air may contain

contaminants. Ventilate to a remote area. See

Air Exhaust Ventilation on page 9.

Never move or lift a pump under pressure. If

dropped, the uid section may rupture. Always

follow the Pressure Relief Procedure on page 10

before moving or lifting the pump.

1. Be sure the mounting surface can support the

weight of the pump, hoses and accessories, as

well as the stress caused during operation.

2. For ease of operation and service, mount the

pump so air inlet, uid inlet and uid outlet ports

are easy accessible.

Grounding

The equipment must be grounded. Grounding

reduces the risk of static and electric shock by

providing an escape wire for the electrical current

due to static build up or in event of a short circuit.

In the site housing a grounding connection is

included.

Check your system electrical continuity after the

initial installation. Set up a regular schedule for

checking continuity to be sure proper grounding is

maintained.

Follow your local re codes. When pumping

ammable uids, always ground the entire uid

system as described.

Air Line

See recommended installation drawing

on page 7.

1. Install an air regulator and gauge. Set pressure

of the driving air should be limited to the

pressure required to run the pump on the

desired working point. Setting the pressure too

high will cause higher wear of the pump and

will increase the compressed air consumption.

The uid stall pressure will be the same as the

setting of the air regulator.

2. If the air regulator do not have a bleed off

function to relieve trapped air, or the air regulator

is not placed close to the pump, locate a bleed-

type master air-valve close to the pump. Be sure

the valve is easily accessible from the pump.

Trapped air can cause the pump to cycle

unexpectedly, which could result in serious injury

from splashing.

3. The master air valve will be used to regulate

the ow rate of the air to the pump. By using a

throttle valve, it is possible to regulate the pump

speed even at the lower end of the curves.

4. Install a grounded, exible air hose between

the accessories and the pump air inlet. The

inner diameter of the hose have to be the same

diameter of the air connection of the pump or

bigger.

MPa/bar/PSI

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 9

Air Exhaust Ventilation

Do not restrict the air exhaust port. Excessive

exhaust restriction can cause erratic pump

operation. At a diaphragm rupture, it is possible

the pumped liquid will escape through the mufer.

To prevent this the air exhaust need to be remote

to a safe environment.

Fluid suction line

1. A shut of valve should be installed just before

the pump to isolate the pump from the system

for maintenance and installation.

2. Always use a exible connection to avoid

vibrations being brought into the piping system.

3. Use a suction line which can stand vacuum. By

the pumping action, vacuum will be created at

the suction side of the pump.

4. The inner diameter of the hose should be equal

to the connection diameter of the pump.

5. If the inlet pressure to the pump is more than

25% of the outlet working pressure, the ball

check valves will not close fast enough, resulting

in inefcient pump operation and is a possible

cause of noise.

6. Inlet pressure greater than 1 bar (15 PSI),

diaphragm life will be shortened.

Fluid outlet line

1. A shut of valve should be installed just after

the pump to isolate the pump from the system

for maintenance and installation. A drain valve

should be installed to relief the pressure of the

pump before starting maintenance work at the

pump.

2. Always use a exible connection to avoid

vibrations being brought into the piping system.

Fluid inlet and outlet ports

VA-C series of pump are having the suction

and discharge connections integrated in the

center block. Suction connection is horizontal

and discharge vertical. Pay attention to this

conguration as this is only valid for correct pump

function.

Installation remarks

1. VA-C pumps must be installed load free to avoid

possible damage of pumps and/or installation.

2. VA-C pumps will be delivered with blind plugs

to prevent dust or other materials to enter the

pump. Those plugs have to be removed before

installing the pump!

3. As UV – radiation can damage Polyethyene. This

must taken in account by installing VA-C pumps

are made out of Conductive PE.

4. The air-valves used in VA-C pumps are

manufactured with tight tolerances. They should

be used with clean, dry and oil-free compressed

air. If the quality of the compressed air at the

place where the pump is installed is not optimal,

it is possible to install a dryer and/or a water

separator. Please contact your distributor for

more detailed information.

Figure 2

Discharge

Suction

VERDERAIR_VA-C manual_rev2_2020_UK_(uk) | 1.12.2020 10

5. VA-C pumps are dry self-priming. So they don’t

need to be lled before rst use. The gures of

the possible suction heights can be found in the

technical information. (see page 25).

6. VA-C pumps will building up pressure at

the liquid side up to the pressure set on the

compressed air-inlet of the pump. If this

pressure is higher than the rated pressure of the

discharge line, a pressure relief valve or another

pressure safety equipment should be installed at

the discharge side of the pump.

7. VA-C pumps can stall against a closed

discharge line without damage. The pump will

stop working when the pressure at the liquid

side of the diaphragms is equal (or higher) then

the compressed air pressure at the air-side of

the diaphragm. As soon the pressure at the

liquid side will drop below the compressed air

pressure, the pump will restart automatically.

Due to internal losses, occasionally the pump can

make a stroke during stalling.

OPERATION

Pressure relief procedure

Trapped air can cause the pump to cycle

unexpectedly, which could result in serious injury

from splashing.

1. Shut off the air supply to the pump.

2. Open the dispensing valve, if used.

3. Open the uid drain valve to relieve uid

pressure. Have a container ready to catch the

drainage.

Flush pump before ﬁrst use

The pump was tested before leaving the factory.

Residue of the testing water can be left in the

pump. To avoid contamination, ush the pump

before rst use.

Starting and adjusting the pump

1. Be sure the pump is properly grounded.See

page 8 for proper grounding.

2. Check ttings to be sure they are tight. Tighten

uid inlet and outlet ttings securely.

3. Place the suction tube (if used) in uid

to be pumped.

NOTE: If uid inlet pressure to the pump is more

than 25% of outlet working pressure, the ball

check valves will not close fast enough, resulting in

inefcient pump operation.

4. Place the end of the uid hose into an

appropriate container.

5. Close the uid drain valve.

6. Back out the air regulator knob, and open all

bleed-type master air valves.

8. Slowly increase air pressure with the air

regulator until the pump starts to cycle. Allow

the pump to cycle slowly until all air is pushed

out of the lines and the pump is primed. Trapped

air can cause the pump to cycle unexpectedly,

which could result in serious injury from

splashing.

9. If you are ushing, run the pump long enough to

thoroughly clean the pump and hoses.

10. Close the bleed-type master air valve.

Pump shutdown

At the end of the work shift and before you check,

adjust, clean or repair the system, follow Pressure

Relief Procedure, in the left column here.

MPa/bar/PSI

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