Biddle IndAC Specifiche Scaricare il pdf (Pagina 20)

B

20

Manual model IndAC

4 Solving

problems

4.1.1 General

If the air curtain does not work, or not

properly, perform the checks mentioned

below.

If that does not help, there may be a defect.

In that case, alert the installer.

4.1.2 Unit does not discharge any air

1 Check whether the air curtain has been

switched on by the control unit: see the

control unit documentation.

2 Check if the unit is not disabled by an

external control component (door switch

or room thermostat).

3 Check if mains power is supplied.

4 Reset the thermal protector of the fans

to: see the control unit documentation.

4.1.3 Unit discharges little air

1 Remove obstacles in front of intake and

discharge openings.

2 Check the heat exchanger for

contamination. Clean it if necessary.

3 Check the direction of rotation of the

fans.

Wrong: the blades go

forward

Correct: the blades go

backward

If necessary, correct the direction of

rotation by interchanging the connections

of two phases from the mains supply.

4.1.4 Unit does not heat, or too little

1 When facing draught: select a higher fan

speed using the operation switch.

2 Does the unit blow out enough air? If not,

perform the checks in sections 4.1.2 and

4.1.3.

For water-heated units:

3 Check the operation of the CH system.

For electrically heated units:

4 Check whether the isolating switch on all

units is set to position 1.

5 Check if mains power is supplied to each

unit.

6 Reset the high-limit thermostat: see the

control unit documentation

7 Check the control knob 1 in the unit: it

must always be set to 60° C.

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