Carrier operating and maintanance Instruções de Operação descarregar pdf (Página 31)

-First carefully read the instructions from the supplier.

The following points require extra attention.

-Check the connections of the high-pressure pipes.

-Ensure that the pipes do not rub against anything.

-Check if the spray banks work well.

-Check the operation of the pressostats and the

pressure.

-Check the water quality.

-Check the contamination of the rinse filter.

-Check the operating pressure weekly. Higher pres-

sure indicates an increase in contamination.

-Caution: The air flow may cause stationary parts to

move (even a fan that is switched off)!

-Caution: While working on the fan, the switch has to

be locked open.

-The data for the belt type, belt tension, number of-

belts, size and type of pulley is indicated on a label

attached to the fan housing.

The bearings of the smaller fan types cannot be lubri-

cated. If the larger fans are of the relubricated type,

then they should be lubricated every six months. For

higher temperatures and increased contamination the

lubrication interval should be adjusted as required.

The standard lubricant is Shell Alvania R3. For higher

temperatures and a higher degree of humidity use a

lubricant recommended by the supplier.

The electric motors are equipped with roller bear-

ings. Depending on the motor size the bearings are

lubricated for life or are equipped with a grease nip-

ple. The lubrication interval and type of lubricant are

as above.

After starting up the unit, but also after replacing the

belts the belt tension has to be checked within one

week and then after two weeks and further tensioned

if required. After that check the belt tension and in-

spect the condition of the belts every three months.

12.13.3. Infrasonic Humidifier

12.14. Fan

12.14.1. General

12.14.2. Bearings

12.14.3. Transmission

The CORRECT BELT TENSION depends on:

-the belt type;

-power to be transmitted;

-belt velocity.

The belt tension is calculated for each transmission.

If the belt tension is too high this can result in bearing

wear and vibration, if it is too low this can result in belt

slippage and belt wear.

Sequence for installation of new belts:

-Ensure that the pulleys are correctly aligned. If nec-

essary re-align.

-Position all belts loosely on the pulleys, do not pull-

tensioned belts over the pulleys.

-Tension the belts and check the tension with a

SonicTension Meter.

-Re-check the alignment.

If the fan speed changes or if a motor with different

power specifications and/or speed is installed, the

manufacturer must be informed. The supplier must

re-calculate the bearing load as well as the impeller

load. If this is not done, irreparable damage to the

fan may incur. The supplier does not accept any

responsibility for modifications that have not been

approved. See chapter 1.1.

-The warning pictograms indicating rotating parts,

electrical voltage and opening of doors are attached

to the door.

Electrical voltage

This pictogram indicates that there are electrical components

behind this access cover, door or panel that may be dangerous

for the user/installer. Only personnel qualified in accordance

with NEN 3140 is permitted to carry out work on these

components. The pictogram is attached to the access cover

for the electric heater control box.

Removal of transport brackets

This pictogram is located at the bottom of the fan section. It

indicates that the transport brackets must be removed during

commissioning before the fan is started up.

Verwijder transportbeugels voor opstarten ventilator.

Remove transport brackets before starting up the fan.

Retirer les fixations de transport avant démarrage.

Central data

This label contains the data for the AHU, such as order

number, position number etc. If present, the label is normally

located on the access cover or the door of the fan assembly.

Opening the fan door

This pictogram is positioned on the outside of the door or

access cover of the fan assembly. This pictogram warns that

the fan must have been switched off and deenergised for a

minimum of two minutes before the door or access cover is

opened.

Lifting and transport

An instruction is attached to the AHU that describes the

procedures that must be followed for lifting and transport.

The following chapter contains further details.

1.4 - Disposal of parts/materials

- The packaging material must be disposed of in a responsible

manner and in accordance with local regulations.

- Components that are replaced, must be disposed of as

described above.

2 - TRANSPORT AND LIFTING INSTRUCTIONS

2.1 - General

Transport and lifting of the AHU must always be in

accordance with the instructions below. If these instructions

are not observed, irreparable damage may occur to the unit,

and people in the immediate vicinity of the unit are also

endangered. Alarko Carrier does not accept any

responsibility if these instructions are not observed. Transport

and lifting must be carried out by qualified personnel. The

AHU must only be lifted with lifting bars supplied by

Alarko Carrier. Lifting must be carried out in

accordance with local regulations and with the help of

certified lifting aids.

2.2 - Transport and storage

Lifting of the AHU is only permitted under the designated

lifting points. Lifting under the cross beams is prohibited.

This applies to transport as well as storage, and is indicated

on the cross beam with the following label.

! WARNING!

Before opening doors, switch off and deenergise the

fan, and ensure that it has stopped rotating.

(minimum of 2 minutes)

Caution: All doors and access covers must be closed before

starting up the AHU.

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.

Under normal conditions the sound dampers are

maintenance-free. Nevertheless it is recommended

to check the attenuators once a year for possible

damage and loose fibres, in order to prevent further

contamination of the system.

12.15. Sound Attenuator

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