Carrier GY Instrucciones de operaciones descargar pdf (Pagina 17)

For normal maintenance routines we recommend using 1 kg of

the concentrated product, diluted to 10%, to treat a coil surface

of 2 m

. This process can either be carried out with a

TOTALINE applicator gun (part No. PE01 WA 4000EE) or

using a high-pressure spray gun. With pressurised cleaning

methods care should be taken not to damage the coil fins.

If at all possible the direction of cleaning should be the

opposite of the air flow direction.

The two cleaning products can be used for any of the following

coil finishes: Cu/Cu, Cu/Al, Cu/Al with Polual, Blygold and/or

Heresite protection.

WARNING: Never use pressurized air or water, as this will

damage the fins, and always clean them against the normal air

flow direction.

Fan motor replacement

5. Using a straight-edge placed perdendicular to the motor

pulleys, mark the tip of each rim with a felt pen or a spot

of chalk. These marks will help count the number of turns.

6. Now unscrew each pulley flange the number of turns

required to obtain the required fan speed.

NOTE: Increasing the fan speed means increasing the

load on the fan motor. Do not exceed the maximum value

indicated in the Physical Data table.

7. Set the movable flanges at the nearest pulley hub key-way

and tighten the set screws.

8. Install the fan belts on the pulleys.

9. The correct tension is obtained when the belt can be

flexed 15 mm with one finger half way between the two

pulleys and without excessive effort. Check the belt

tension after three or four hours of operation.

10. After 24 to 48 hours of operation check the belt tension

once again. If the belt tension is to high or too low, this

will affect the operating lift of the belt.

Proceed as follows:

1. Remove the fan access panel on the control box side.

2. Slide a sheet of cardboard over the coil to protect it.

3. Remove the damaged motor by sliding it from its support.

4. Fit the new motor by following the operation described

above in reverse order.

5. Adjust the belt tension.

6. Replace all panels.

Fan adjustment and pulley alignment

In order to obtain the optimum fan performance, the following

instructions should be carried out during the unit installation:

once the system ducting is installed and the static pressure

requirement has been calculated, the necessary fan speed can

be established by referring to the corresponding chart in the

product data. On new units, the fan speed is factory-set to mid

range.

To modify the fan speed:

1. Disconnect the unit power supply.

2. Remove the fan compartment enclosure panel on the

control box side.

3. Remove the fan belts. To do this, loosen the hexagonal fan

motor nut (ø 24 mm) and slide the motor on its support.

4. Move the fan motor forward and slip the belts over the

pulley rims. Loosen the movable pulley flange set screws

(on the fan motor pulley) and screw both movable flanges

completely toward the fixed centre flange.

11. Pulley alignment should be checked before the belt

tension is adjusted. The straight-edge should be placed on

the side of the pulleys, and the belt must be parallel with

the edge. With movable flanges use a wooden block or

similar to compensate the width difference. The block

thickness should be half the pulley width difference.

12. When the tension and alignment are correct, reinstall the

bolts on the fan rotation axis. Refit the enclosure panels

and connect the power supply. Start the unit and check to

ensure that the fan discharge volume is correct.

Deflection F, 15 mm

Load, kg

Straight-edge

Wooden block

Distance between centres L, mm

1 2 ... 12 13 14 15 16 17 18 19 20

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Carrier GY Instrucciones de operaciones Pagina 17

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