Danfoss EV210B Instrucciones de funcionamiento

IC.PS.600.A4.02 / 520B2809

how to use

solenoid valves

I N D U S T R I A L A U T O M AT I O N

MAKING MODERN LIVING POSSIBLE

IC.PS.600.A4.02 / 520B2809

Flexible and user-

friendly

Danfoss solenoid valve bodies and electrical

coils are normally supplied separately and

then combined together. They are assembled

quickly and simply without any tools. This

provides optimum product exibility and

availability. If a coil does need to be replaced

then it can be done without stopping or

draining any system.

The solenoid valves are also available as

assembled units if required.

One call and

you’re in control

One call to Danfoss gives you access to an entire range of high-quality industrial controls. The Danfoss line encompasses

components for industial monitoring and control systems based on the principles of pressure and temperature

measurement, electrical power, and uid control, and includes:

• Electro-mechanical contactors

• Electronic contactors and motor controllers

• Pressure and temperature switches

• Pressure transmitters

• Temperature sensors and transmitters

• Solenoid valves

• Externally operated valves

• Thermostatically operated valves

Given their important monitoring and control functions, Danfoss components are designed for accuracy, reliabillity

and long life. And our determination to guarantee a high-quality product is matched by an equally strong commitment

to customer service. A specialist in the Danfoss industrial controls group can advise you on product selection and

conguration, based on long experience in your industry.You’ll nd that with sales and service centers in over 100

countries, Danfoss is usually only a local call away.

This booklet has been compiled to help in the instal-

lation of compact and high performance solenoid

valves and in locating faults in systems with solenoid

valves.

The booklet also contains an overview of solenoid

valves with dimensions to help in sizing valves for new

installations and the modernisation of existing plant.

The compact range has small physical dimensions for

control of ow where space is limited.

The high performance range is a sturdy and universal

valve program for control of ow in industrial plants

and within heating and sanitary systems.

solenoid valves

how to use

Contents Identication 3

Installation 5

How to choose 12

Valve overview 16

Seal material 20

Coils 21

Opening and closing times 23

Fault location 25

Spare parts high performance (blue) range

Spare parts compact (black) range 38

Tools 40

2IC.PS.600.A4.02 / 520B2809

IC.PS.600.A4.02 / 520B2809

Choosing the correct

solenoid valve

Symbolise valves used in

a closed circuit system,

typically with low

dierential pressures.

Symbolise valves

used in an open sys-

tem. Used typically

for drinking water.

Dierential pressure

higher than 0,5 bar.

Note that this booklet describes only brass

solenoid valves.

For other types, please contact Danfoss.

Solenoid valves

Note !

For more details see page 11.

IC.PS.600.A4.02 / 520B2809

Identication of Danfoss solenoid valves:

Illustration 1 shows the label with relevant informa-

tion that is attached to the coil.

The example here is from an EV220B solenoid

valve:

15: 15 mm orice

B: Brass body material

G 12: ISO 228/1, 1/2 inch connection

E: EPDM seal material

NC: Normally closed

Identication

Danfoss

solenoid valves

The coil type (BB230AS) is printed on the front of

the coil as well as voltage (V) and frequency (Hz)

- see illustration 2.

After identication, see the rst section of this

handbook.

B - Valve

High performance

4IC.PS.600.A4.02 / 520B2809

IC.PS.600.A4.02 / 520B2809

If no code is stamped in the valve, the following

information will be of great help when ordering

Danfoss solenoid valves as replacements:

• Application (closed circuit, open

system or drain application)?

• Function (de-energised open or

closed)?

• End connection?

• Medium (water, oil, air, etc.)?

• kvvalue?

• Coil voltage?

• Alternating (ac) or direct current (dc)?

Valve identication

missing

Identication

If the the coil label cannot be read, the valve can be identied from the letter/

number combination stamped in the valve body.

Example:

506U4042

A - Valve

Compact

Week 50 2006 042U4042

IC.PS.600.A4.02 / 520B2809

Installation

Flow direction

Water hammer is a typical result of high liquid

velocity (high pressure and high ow velocity

through small pipe diameters).

There are several reasonable solutions to the

problem:

A: Reduce the pressure by installing a pressure

reduction valve ahead of the solenoid valve. If pos-

sible, increase the pipe diameter.

B: Damp the water hammer by installing a exible

hose or exible buer ahead of the solenoid valve.

C: Use a solenoid valve of the type EV220B 15-50.

The equalising orice can be replaced by a version

with smaller diameter. This gives a longer closing

time (see“Spare parts”and“Opening and closing

times”).

Water hammer

To be able to operate correctly, all solenoid valves

must be installed with the arrow cast on the body

pointing in the direction of ow.

Equalising orice

6IC.PS.600.A4.02 / 520B2809

IC.PS.600.A4.02 / 520B2809

Installation

Test pressure

Tightening up

Pipe The pipes on both sides of the valve must be

securely fastened.

When applying test pressure: All valves in the

system must be open. There are three ways of

doing this:

1. By applying voltage to the coil

2. By opening the valves manually(when the

manual override accessory is tted)

3. By connecting the Danfoss permanent mag-

net (see Tools, page 40)

Note that the manual opening unit is not supplied

as standard, but as an accessory for EV220B 15-50

valves (see page 31).

Remember to screw the opening unit back

(CLOCKWISE) before starting up the system, other-

wise the valve cannot close.

Always use counter-force when tightening up pipe

connections, i.e. use a spanner on both the valve

body as well as on the pipe connector (as shown).

IC.PS.600.A4.02 / 520B2809

Installation

Always ush out piping before installing a solenoid

valve. If there is dirt in the medium, a lter should

be installed ahead of the valve.

Dirt in the system

8IC.PS.600.A4.02 / 520B2809

IC.PS.600.A4.02 / 520B2809

Installation

Servo-operated and

assisted lift

servo-operated valves

Installing the coil Danfoss recommends that the solenoid valve be in-

stalled with coil upwards. This minimises the risk of dirt

collecting in the armature tube.

If “clean”media is used, i.e. media containing no dirtpar-

ticles, the solenoid valve will operate when installed in

the orientation as shown below.

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