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Fläkt Woods

3176 GB 05.08

8

Specifications are subject to alteration without notice

EU Air Handling Unit

MAINTENANCE

EUQA Humidifier, for circulated water

Q1, Q2

Motor protection switch

R1

Aux. relay

NR3

Level monitor

K1, K2

Contactor

F1

Automatic fuse

TR1

Time relay

HB

Main switch

TF

Supply air fan

SU1

Timer

NR1, NR2 Level monitor

SV1

Valve actuator

GM

Hygrostat

Bleed-off

Level relay

Maintains correct level 

Level relay

L3

L2

L1

2

1

0
1

3

4

5

6

PE

I> I> I>

1

5

3

2 4 6

W

U V

3

M

2

1

F1

HB

Q1

Q2

K1

K2

CP1

CP2

6

4

2

5

3

1

N

N

SU1

A2

A1

Timer
Emptying/ Flushing

6A

A2

A1

R1

Auxiliary relay
Emptying/ Flushing

SU1

4

3

5

TF

c

no

1

2

CP1

Contactor

A2

A1

K1

GM

c

no

3

4

15

16

18

15

18

16

15

18

16

MV1

11

12

Solenoid valve

Valve actuator

SV1

13

15

14

3

2

1

NR1

A1

A2

B1

19

18

B2

B3

M

C

Level relay
Prevents operation
when the tray is dry

NR2

A

B3

B2

16

B1

A1

A2

17

A2

A1

B1

B2

B3

B

NR3

Maintains

correct level

4

–

B1

A2

A1

TR1

Delayed

closure, SV1

TR1

15

16

18

R1

11

12

14

R1

21

22

24

R1

31

32

34

1 2 3

4

5

G/G

7

8

6

Control box on outside

Control box on inside

1 3 5

2 4 6

W

U V

3

M

6

4

2

3 5

1

I>

I>

I>

K2

A1

A2

Contactor

CP2

Humidity control

Interlock

Wiring diagram

Service intervals

Component

Service work

Interval, months

Casing (water tray,

Drain the water tray. Clean the interior by flushing, wiping or brushing

3

ends, top, guide rails)

if necessary.

Humidifier fills

Clean by flushing with water, possibly with ULCZ-01 cleaning agent,

Droplet eliminator

particularly if the humidification performance has deteriorated.

3

Water filter

Clean or replace the filter cartridge, if necessary.

3

(The mesh must not exceed 500 µm.)

Level monitor

Check the water level and adjust as necessary.

3

Water flow

Clean the spray tubes as necessary.

3

Water trap

Clean and refill.

6

Water quality

See under “maintenance adjustments”.

12

Содержание EUQA

Страница 1: ...assified If the water is of zone 4 type it should be softened Level monitors fig 2 Level monitor A Closes the water supply valve when the water reaches max level A Setting A 25 mm from the upper edge of the water tray sizes 20 53 65 mm from the upper edge of the water tray sizes 60 84 Level monitor B Opens the drain valve for water bleed off Setting B The zone value obtained see page 5 determines ...

Страница 2: ...pening the drain valve approx half way 45 see Fig 3 The valve can be reclosed by pressing a reset button on the control unit When the water level has dropped below the lowest point of sensor B the drain valve should open fully If the water level continues to drop below the lowest point of sensor C water inlet valve should begin to open and after a preset period see Table 2 Fig 6 the drain valve sh...

Страница 3: ...5 12 M A1 15 B1 A2 18 16 Rel Power TR1 Fig 6 Table 3 Presetting time relay TR1 Seconds Range Time 0 1 s 0 10 10 s 10 red 20 30 s 20 black 30 30 s 30 black 40 100 s 4 red 50 100 s 5 red 60 100 s 6 red 70 100 s 7 red 80 100 s 8 red 90 100 s 9 red 100 100 s 10 red 120 300 s 12 black 180 300 s 18 black 240 300 s 24 black 300 300 s 30 black Q1 K1 R1 NR3 NR2 NR1 TR1 Fig 7 Components inside the control b...

Страница 4: ...ost easily by programming the opera tion times from 12 15 to 12 00 and from 12 10 to 12 12 on a daily basis Emptying and additional emptying will then occur from 12 00 to 12 10 and from 12 12 to 12 15 respectively Water quality Evaporation causes an increase in the concentration of minerals in the circulating water which necessitates continuous bleed off and make up with fresh water The bleed off ...

Страница 5: ... the time zone where it is to be used Display of special functions Manual operation Permanent ON OFF Symbols which indicate summer winter function Summer Winter The numbers under the display indicate days of the week 1 Monday 2 Tuesday etc Choice Yes means choice of programming Choice No means continue Day by day summary of the programmed connection times Example 5 Friday Duct status ON On OFF OFF...

Страница 6: ... If the concentration of salts is too high salts may be deposited on the humidifier fill which will have a detrimental effect on the performance of the humidifier The chart above can be used to determine the appropria te bleed off flow If the humidifier has been sized for running over a long period at a high humidification rate x above 8 grams per kg of air 90 humidifier and x above 5 grams per kg...

Страница 7: ...tom of the water tray E The fills are relatively delicate and should therefore be treated with great care Clean by spraying with a jet of clean water possibly containing some ULCZ 01 clea ning agent When replacing the humidifier fills see the appropriate instructions supplied with the new fills F Refit the components in the reverse order G Check the position of the side wall and close the inspecti...

Страница 8: ...operation when the tray is dry NR2 A B3 B2 16 B1 A1 A2 17 A2 A1 B1 B2 B3 B NR3 Maintains correct level 4 B1 A2 A1 TR1 Delayed closure SV1 TR1 15 16 18 R1 11 12 14 R1 21 22 24 R1 31 32 34 1 2 3 4 5 G G 7 8 6 Control box on outside Control box on inside 1 3 5 2 4 6 W U V 3 M 6 4 2 3 5 1 I I I K2 A1 A2 Contactor CP2 Humidity control Interlock Wiring diagram Service intervals Component Service work In...

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