Carrier operating and maintanance Provozní pokyny stáhnout pdf (Strana 29)

The AHU(s) require little maintenance. The smooth

inside and outside finish of the panels makes main-

tenance very simple.

For dry sections: once a year thoroughly check the in-

sideand outside of the AHU casing. For maintenance

of wet sections (coolers and humidifiers) please refer

to the airhandling section concerned.

12.2. Casing Panels

12.2.1. Inside Installation

a) Internal inspection of the casing of double-skin

panel sand of all dry parts.

Remove contamination with water and a mild house-

hold soap solution. Where damage of the paint finish

has occurred, if necessary remove rust and touch up

with good quality anti-corrosive primer and paint. The

outside air intake sections can show signs of corrosion

as they contain wet parts and are affected by mist,

rain and air pollutants.

b) Outside inspection of the coating.

If damage to the paint treatment has occurred, remove

the rust (if necessary), and touch up with good quality

anti-corrosive primer and paint.

12.2.2. Outside Installation

Check the sealed joints ofAHUs installed outside and

if required seal again with a UV-resistant and paint-

able kit.Treat damage as for inside installation.

12.3. Doors and Access Covers

Check locks and hinges ofall doors and access cov-

ers. For outside installation check the storm cord.

12.4. Flexible Connections

Check the flexible connections for damage.

Ensure that the unit is earthed and installed in the

correct manner.

12.5. Earthing

All damper hinges are equipped with plastic bearing-

bushings, so that no lubrication is required. Remove

excess contamination by cleaning it with compressed

air. Clean aluminium parts with water and a mild

household soap solution. Check adjusting bolts and

linkage and if necessary tighten. Ensure that the

damper blades run free of the casing and do not touch

the flexible connection.

12.6. Dampers

Especially the outside air intake is contaminated

by pollution taken in with the air. The maintenance

interval must be observed, as irreparable damage of

the panels might otherwise occur. Clean the outside

air intake well and repair damage as described in

point 10.2.1.

12.7. Outside Air Intake

The filters must be inspected once a month for excess

pollution, pressure loss, damage and seating of the

slide-in filters or built-in frames. With slide-in filters

ensure that the filters have been correctly positioned

and have been pushed well against each other from

below. When replacing built-in filters you must ensure

that the filter has been pushed well against the seal-

ant and that the clips have been correctly installed.

Filters must be replaced at the required intervals.

The timing of the replacement depends on the type

of filter, quality and the degree of contamination of

the air. The pressure loss across the contaminated

filter can be measured with a pressure differential

gauge. Maintenance instructions of special filters are

available on request.

12.8. Filters

Check the air intake once a year for contamination,

and if necessary clean with compressed air against

the direction of the air flow or clean the air intake

with a vacuum cleaner. Check for leakage. Check

the operation of the frost protection thermostat and

check the correct control sequence when the the-

mostat trips. Glycol-charged heat exchangers must

be checked annually for the actual percentage of

glycol in the water. The following warning pictogram

is located on the panel of the steam heat exchanger:

hot surface.

12.9. Heaters

12.9.1. Water, Glycol and Steam Heat Exchangers

1 - SAFETY CONSIDERATIONS

1.1 - General

The 39HQ air handling units (AHUs) has been designed

and manufactured in accordance with the CE machine

directive EN292. In order to guarantee safe operation and

use of the unit, please carefully read and observe the

instructions in this document and pay special attention to

the warnings that apply to this unit. Any modifications in

the design and/or installation of the AHU that are carried

out without discussion with Alarko Carrier and

without advance written agreement will result in the loss of

the right to any warranty claims and any claim for injury to

personnel as a result of these modifications.

Maintenance procedures may only be carried out by

qualified personnel.

Heating and cooling elements are manufactured and

supplied in accordance with guidelines of the Pressure

Equipment Directive (PED).

1.2 - Applications

The AHU is designed for the movement and conditioning

of air, unless otherwise agreed during the design stage.

1.3 - Instruction types

The following warning pictograms and labels with text are

used.

Lifting point

This pictogram shows where the AHU must be lifted and is

positioned on the support beam.

Lifting prohibited

This pictogram shows that no horizontal transport devices

must be placed under this frame section, such as pallet

lifters or the forks of fork lift trucks. It is also forbidden to

place lifting devices for transport and storage under this

frame element.

Earthing

This pictogram indicates where the AHU must be earthed

and is on one of the support beams beneath the casing in

the fan section.

- The electrical components in the AHU must be earthed,

except for components with double insulation and/or

components with a supply voltage below 50 V.

- The electrical components must be installed in accordance

with national and local regulations.

Rotating parts

This pictogram indicates that there are rotating parts behind

this access cover, door or panel which may cause injury. The

components that include rotating parts are the fan and heat

recovery wheel. If there are special customer-specific

components behind doors, access covers or panels that

include rotating parts and pose a potential risk, this is also

indicated by this pictogram.

Hot surfaces

This pictogram indicates that there are components behind

this access cover, door or panel that can cause serious burns

when touched.

The components that may have hot surfaces are the steam

humidifier, steam heater and the electric heater. If there are

special special customer-specific components behind doors,

access covers or panels that have hot surfaces and pose a

potential risk, this is also indicated by this pictogram.

12. MAINTENANCE AND OPERATING INSTRUCTIONS

12.1. General

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