Airflow Duplexvent Flexi DV1100 Manual de instalação, utilização e manutenção - Página 15

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Spare filter cassettes are to be ordered from the manufacturer. Please include in your order the order code of the cassette (the
code is shown on the identification plate of the appliance).
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After opening the unit door, slide out the contaminated cassettes from the guide rails and insert new ones.
During insertion make sure that the arrow showing the direction of air through the cassette is visible from the operators side and
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always points toward the heat recovery exchanger!
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Make sure that each section (supply, exhaust) has filter cassettes with the correct filter grade as indicated in Chapter 5.7.
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Dispose of the contaminated cassettes with general municipal waste.
ATTENTION: Use original filter cassettes only! If different cassettes were used, the manufacturer could not guarantee their proper
function!
Always record the date of replacement of filter cassettes in a suitable way, e.g. in the operational logbook.

9.4 Cleaning heat exchangers (heater / chiller)

It is necessary to clean the exchanger when it shows only minimum signs of contamination.
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After opening the door vacuum clean all impurities.
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If the vacuum cleaning of impurities while the exchanger remains in its place does not suffice, disconnect it from the heating /
cooling medium, remove it and clean it using a high-pressure cleaner. Proceed with care so as not to damage the exchanger.
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When cleaning the exchanger proceed in such a way so as to prevent impurities or moist from entering the other parts of the
appliance.

9.5 Cleaning the plastic heat recovery exchanger

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The recommended period for cleaning the exchanger is approximately 30 to 50 thousand running hours depending on the nature
of the operating environment.
It is necessary to clean the exchanger when it shows only minimum signs of contamination.
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After opening the door and unlocking the fixing elements, slide individual recovery exchanger blocks out of the guide rails in the
following order: size 1100-???, 1600 - 1, 2, 3, 2600 and 3600 - 1, 2, 3, 4. Rinse the individual blocks with hot water containing
detergent with maximum temperature 70°C, alternatively use disinfectant XXX in concentration recommended by the producer.
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After letting them dry thoroughly, slide the individual heat recovery exchanger blocks back in, in the reversed order and secure
them in place.
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Check for the tight fit of the exchanger in the guide rails.
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Do not expose the exchanger to ultraviolet light, store it in darkness if necessary.
ATTENTION: Never clean the exchanger with agents that might contain organic solvents - there is a risk of irreversible damage to
the exchanger!!

9.6 Draining and inspection of the condensate collection tank (not included in delivery)

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If the condensate is drained into a sufficiently large and accessible tank, make sure it is inspected regularly and timely drained.
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Make sure the tank is easily accessible; keep it clean!

9.7 Other minor maintenance

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When replacing the air filters also check the following:
- Cleanliness of the condensate drain. A blocked drain might cause serious problems.
- Condensate drain flooding.
- Door seal condition.
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Regularly check the level of measurement liquid in the manometers, if necessary adjust the zero value using the bottom knob
(marked with - +). Before adjusting to zero make sure that no pressure enters the manometer by disconnecting both hoses
located on the top of the appliance.
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Also regularly check the condition of the sludge filter (part of the heating / cooling system) on the inlet of heating / cooling water
into the hot water heater / water chiller.
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Keep the heating/cooling system including the heater / chiller and the control set bled of air. Check pressure in the heating /
cooling system.
1 0 . F a i l u r e s a n d t r o u b l e s h o o t i n g
Failure
Appliance will not start
up
- The appliance supplies
Appliance supplies
considerable lower air
insufficient air volume
volumes
Symptoms
- Power supply is not connected
- Power supply or interconnecting electric
cables are interrupted
- Not found
- Clogged air filters
Possible causes
15
Troubleshooting
- Connect to power supply (switch on primary
circuit breakers)
- Disconnect from power supply and contact
a service technician
- Disconnect from power supply and contact
a service technician
- Switch off the appliance
- Disconnect from power supply
- Replace air filters