Service manual

4
106 Siemens-Elema AB E382 E380E 061 01 03 01
Service procedures Servo Ventilator 300/300A
Replacing the fuses
Fuses F1, F2, F3 and F4
Fuses F1 – F4 are mounted on PC 1618
POWER SUPPLY inside the power section.
• Disconnect and prepare the ventilator as
described in chapter ”3. Disassembling
and assembling”, section ”Preparation”.
• Disassemble the power section as
described in chapter ”3. Disassembling
and assembling”, section ”Disassembling
the power section”.
• Replace blown fuses with new fuses as
listed in the table below:
Fuses Purpose
F1: F 6.3 A Limits the total +24 V supply current
F2: F 1.6 A Controls the +24 V FUSED voltage
F3: F 6.3 A Internal battery connector fuse
F4: F 6.3 A External battery connector fuse
• Assemble the power section.
Fuses F11 and F12
• Disconnect the mains power cable from
the ventilator.
• Open the cover (1).
• Pull out the fuse holders (2).
• Replace blown fuses with new fuses as
listed in the table below:
Mains power Selector Fuses
voltage setting F11/F12
100 V (±10%) 100 V T 3.15 AL
120 V (±10%) 120 V T 3.15 AL
220 V (±10%) 220 V T 1.6 AL
230 V (±10%) 220 V T 1.6 AL
240 V (±10%) 240 V T 1.6 AL
• Close the cover (1). The selected voltage
is shown in the cover window.
1
F11
F12
300-L28X
2