Danfoss AFQM 6 Manuale operativo - Pagina 6

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AFQM, AFQM 6

ENGLISH

Safety Notes

Prior to assembly and commissioning to

avoid injury of persons and damages of

the devices, it is absolutely necessary to

carefully read and observe these instructions.

Necessary assembly, start-up, and maintenance

work must be performed only by qualified,

trained and authorized personnel.

Prior to assembly and maintenance work on the

controller, the system must be:

- depressurized,

- cooled down,

- emptied and

- cleaned.

Please comply with the instructions of the

system manufacturer or system operator.

Disposal instruction

This product should be dismantled

and its components sorted, if possible,

in various groups before recycling or

disposal.

Always follow the local disposal

regulations.

Definition of Application

The controllers AFQM 6 and AFQM are used in

connection with electrical actuators AMV(E) 55,

65x and 85 for flow limitation and temperature

control of water and water-glycol mixtures for

heating, district heating and cooling system.

The technical data on the rating plates

determine the use

Mounting

❶

Permissible Installation Positions

DN 40-80 T

≤ 120 °C

①

max

The controllers can be installed with

(connection neck for) electrical actuator

oriented horizontal or upwards.

DN 40-80 T

> 120 °C, DN 100-250

max

The controllers can be installed with

(connection neck for) electrical actuator

oriented upwards.

Electrical actuator

Installation positions for electrical

actuators AMV(E) have to be observed as

well. Please see relevant Data Sheet.

Place and Scheme of Installation

① Return flow

② Supply

Valve Installation

❸

1. Install strainer ① in front of valve.

2. Rinse system before installing valve.

3. Observe flow direction ② on the valve body.

Flanges ③ in the pipeline system must be

in parallel direction, the sealing surfaces

must be clean and undamaged.

4. Install valve.

5. Tighten screws crosswise in 3 steps up to the

maximum torque.

6 | © Danfoss | 2020.12

Actuator and Valve Mounting

AMV(E) 55/56

1. Remove the connector ① by release the bolt

of actuator using Allen key 4 mm.

2. Tighten union nut ②, torque 3 Nm.

3. Install the connector ① again to connect the

spindle of actuator and valve.

Read Instructions of AMV(E) 55/56 for wiring and

setting.

AMV(E) 65X

1. Install the actuator to the valve.

2. Tighten the nuts ② to fix the ring.

3. Connect stems ①.

4. Tigten the connector ① again to connect

the spindle of actuator and valve.

Read Instructions of AMV(E) 65x for wiring and

setting.

AMV(E) 85/86

1. Remove the connector ① by release the bolt

of actuator using Allen key 4 mm.

2. Put the actuator on the valve and fixed by

tight the screw ② using Allen key 4 mm.

3. Install the connector ① again to connect the

spindle of actuator and valve.

Read Instructions of AMV(E) 85 for wiring and

setting.

Insulation

DO NOT insulate the electrical

actuator!

The pressure actuator may be insulated

up to a medium temperature of 100 °C.

Leak and Pressure Tests

Prior to pressure tests it is absolutely

necessary to open the valve.

Non-compliance may cause damages at the

controller AFQM.

Open valve by means of the actuator:

AMV(E) 55/56

②

Adjust valve position manually using an Allen

key (See instructions of AMV(E) 55/56 for manual

operation).

AMV(E) 65x

Manual adjustment of the valve depend on type

of the AMV(E) 65x actuator (See instructions

for particular type of AMV(E) 65x for manual

operation).

AMV(E) 85/86

❷

⑤ Remove grommets.

⑥ Push.

⑦ Adjust valve position manually.

See instructions of AMV(E) 85/86 about manual

operation.

When the impulse tube is installed, the

max. operating pressure of *16 bar

(PN 16) and *20 bar (PN25) must NOT

be exceeded.

*DN depended

Non-compliance may cause leaks at the

actuator.

In case of higher test pressures, remove impulse

❹

tubes ⑧ at the valve.

Close connections at the valve with plug G1/4

ISO 228 ⑨.

Observe nominal pressure ⑩ of the valve.

Max. test pressure is 1,5 × PN

Filling the System First Start-up

First, ensure that valve is open. To open

the valve see section 5 and read

instructions for relevant type of the

actuator.

The pressure ② at the valve output may

exceed the pressure ① at the valve input only

insignificantly. Non-compliance may cause

damages at the Controller.

Flow Limitation Adjustment

The connector between valve and actuator

should be released and the actuator removed

before the adjustment of flow to prevent any

possible damage to the actuator.

The adjustment of the flow is made by adjusting

the valve stroke.

There are 2 possibilities:

1. Adjustment with adjustment diagram see ❽.

2. Adjustment with heat meter, see ➒.

Adjustment with adjustment diagram

The system should not be in operation for

adjustment.

❺

Valve stroke adjustment

1. Close valve by turning the adjusting screw ①

up to its stop.

2. Select diagram below necessary flow. See

AFQM 6/AFQM adjustment diagrams ❽.

Necessary

flow rate

Revolutions of

adjusting throttle

3. Turn adjusting screw ① by the No number to

the right.

 The adjustment of the valve stroke is

completed.

4. The adjusting screw may be sealed (drilling).

Adjustment with heat meter

1. Operate actuator manually or by control

signal to retract the stem.

See the manual operation in instructions of

AMV(E) 55/56/65x/85/86 actuator.

2. Ensure that the system or a bypass ② is

completely open.

3. Observe indicator of heat meter.

4. Increase of flow ③.

5. Reduction of flow ④.

6. As soon as the heat meter shows the

required value, shortly throttle the system

and re-open.

7. Verify flow.

❻

❽

❼

❾

AQ16278645877002-010201