Defensor ABS2 Installation and Operating Instructions

7.2 Fault elimination
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Notes regarding fault elimination
– Before eliminating faults, the Defensor ABS2 must be taken out of
operation according chapter 5.2.
Danger! Make sure the mains supply to the humidifier is disconnected
(check with voltage tester) and the stop cock of the water supply is
closed.
– Have faults eliminated by adequately qualified and trained personnel
only (e.g. by a service engineer of your Defensor supplier).
Malfunctions caused by the electrical installation must be repaired by
authorized personnel only.
Replacement of the fuses
Caution! The electronic components on the control PCB are very susceptible
to electrostatic discharge. When carrying out repairs to the control unit,
appropriate measures (ESD-protection) must be taken to prevent damage
to electronic components.
Danger, lethal voltage! Before replacing defective fuses, set the
Defensor ABS2 out of operation and disconnect the unit from the
mains according to chapter 5.2.
• Loosen the 4 screws of the cover on the left side of the base unit.
Carefully lift off the cover, then remove the grounding wire from the
cover.
F2
F1
F3
• Replace fuses F1, F2 and F3 of the control PCB only with fuses
matching the specifications below:
– Atomizer fuse F1:
Supply voltage 220…240V: 6.3 A, slow-blow/nom. voltage 250V
Supply voltage 100…115V: 16 A, slow-blow/nom. voltage 250V
– Primary fuse F2:
Supply voltage 220…240V: 315 mA, slow-blow/nom. voltage 250V
Supply voltage 100…115V: 630 mA, slow-blow/nom. voltage 250V
– Secondary fuse F3: 1.6 A, slow-blow/nom. voltage 250V
Caution! Never use refurbished fuses. Do not bridge the fuse holder.
• Following replacement of the fuse(s) connect the grounding wire to the
cover, then fasten the cover with the 4 Phillips screws.