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flakt woods LQQA Maintenance Manual

For circulated water
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Maintenance
LQQA Humidifier, for circulated water
18
2
1
3
4
16
Size 60-84
15
14
6
5
11
Fig. 1
12
13
Maintenance adjustments
Water:
Determine the calcium and bicarbonate content and the
pH value of the water. These values can be obtained
from a water analysis or from the local water authority.
Plot the values of bicarbonate, calcium and pH in chart
1 on page 5 to determine in which zone the water can
be classified. If the water is of zone 4 type, it should
be softened.
Level monitors fig. 2
Level monitor A: Level monitor A: Closes the water
supply valve when the water
reaches max. level A.
Setting A:
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 at which setting level
monitor B (Fig. 2) is to be preset.
Level monitor C:
Stops the circulation pump and opens
the water supply valve if the water
level drops below level C.
Setting C:
25 mm from the bottom of the water
tray (sizes 60–84)
Level relays:
NR 1, NR 2 and NR 3 are shown in Fig. 7. The level
relays are preset at a sensibility of 40 kΩ. If softened
water is used and the level monitors don't work, the
sensibility setting can be increased to 100 kΩ.
Fläkt Woods
9206 GB 2011.11
17
9
7
8
10
1. Control box, on the outside
2. Control box, on the inside
3. Shut-off valve (not included)
4. Water filter, max. 500 mm mesh (not
included)
5. LQAZ-08 Water trap (accessory)
6. Water supply pipe
7. Humidifier fill
8. Droplet eliminator
9. Spray pipe
10. Pump
11. Flow controller
12. Valve with motor actuator
13. Overflow hose
14. Water level sensor
15. Solenoid valve
16. Flushing hose
17. End plug
18. Side wall
Level monitors
A
B C
N
Z O
3
2
1
Fig. 2
1
Zone Scale
Level monitor B: Adjustable
Adjusting screw
Zon
3
2
1
Specifications are subject to alteration without notice

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Summary of Contents for flakt woods LQQA

  • Page 1 Maintenance LQQA Humidifier, for circulated water 1. Control box, on the outside 2. Control box, on the inside 3. Shut-off valve (not included) 4. Water filter, max. 500 mm mesh (not included) 5. LQAZ-08 Water trap (accessory) 6. Water supply pipe 7.
  • Page 2 Maintenance LQQA Humidifier, for circulated water Maintenance adjustments (Contd.) Table 3. Supply water flow The humidifier function: Size Supply water flow, l/min – switch on the power supply to the humidifier. Aluminium The water tray will start to fill with water. 90% 60% Check: 60 –...
  • Page 3 Maintenance LQQA Humidifier, for circulated water Table 2. Presetting the time relay Table 3. Presetting time relay TR1 Time required for emptying Seconds Range Time Normal operation preset High humidification over a Size value long period 10 s 10 red Δx >8 gram Δx >5 gram...

  • Page 4: Water Quality

    Maintenance LQQA Humidifier, for circulated water Water quality To set the timer for emptying and flushing Evaporation causes an increase in the concentration of For normal function, the timer should be preset to minerals in the circulating water, which necessitates ”ON”. When emptying, which can be programmed to continuous bleed-off and make-up with fresh water.
  • Page 5 Maintenance LQQA Humidifier, for circulated water The timer has also been preset for the following: Timer – Summer and winter time in the country where it is to The timer has been preset at the factory for emptying and be used.

  • Page 6: Water Consumption

    EU Air Handling Unit INSTALLATION Maintenance EUQA Humidifier, for circulated water LQQA Humidifier, for circulated water Determining the water quality zone Example The following particulars are required to be able to deter- Data from the municipal water authority: mine the water quality zone.
  • Page 7 Maintenance LQQA Humidifier, for circulated water To shut down the humidifier Isolate the power supply Stop the fans, if they are operating. Cleaning or replacement of the humidifier fills and droplet eliminators Shut down the humidifier. Open the inspection door. Withdraw the spacer plate as shown in Fig. 8. Withdraw the droplet eliminators and humidifier fills straight out of the humidifier.

  • Page 8: Service Intervals

    Maintenance LQQA Humidifier, for circulated water Service intervals Component Service work Interval, months Casing (water tray, Drain the water tray. Clean the interior by flushing, wiping or brushin 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. Water filter Clean or replace the filter cartridge, if necessary. (The mesh must not exceed 500 μm.) Level monitor Check the water level and adjust as necessary. Water flow Clean the spray tubes as necessary. Water trap Clean and refill. Water quality See under “maintenance adjustments”. Wiring diagram Control box on outside Timer – Emptying/ Flushing Interlock Humidity control...