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Service procedures
Replacing the battery on
PC 1587 Computer Interface
Normal service interval for exchange of the
battery is approx. 5 years.
The battery backs up the trend data memory
and the real time clock when the SV 300 is
switched off.
Note – When the battery is disconnected,
all information stored in the trend data
memory as well as time and date setting
will be lost.
Replacing the battery
See also chapter
assembling" for detailed disassembling and
assembling instructions.
• Disconnect and prepare the ventilator as
described in chapter "3. Disassembling
4
and assembling", section "Preparation".
• Remove PC 1587 from the control unit.
• Replace the battery on PC 1587. Attach
the new battery to the PC board with a
cable tie.
• Assemble the control unit.
• Connect mains power and gas supply to
the ventilator.
• Set the Mode selector to "Volume Control"
("Volume Control/Support" on SV 300A).
• Wait approx. 30 seconds and make sure
that no "Technical error" information is
shown in the "Alarm and messages"
display.
• If the real time clock in SV 300 is used, set
time and date. This can only be done by
using e.g. a Servo Screen 390 connected
to the port N82 on SV 300.
108
"3. Disassembling and
Resetting the trend data
memory and real time clock
The trend data memory and the real time
clock in the SV 300 is used by e.g. a Servo
Screen 390 connected to the SV 300.
Note – When resetting the memory, all
information stored in the trend data memory
as well as time and date setting will be lost.
Resetting procedure
See also chapter
assembling" for detailed disassembling and
assembling instructions.
• Disconnect and prepare the ventilator as
described in chapter "3. Disassembling
and assembling", section "Preparation".
• Make the battery on the upper part of
PC 1587 accessible.
• Disconnect backup power supply to
PC 1587 during at least 30 seconds by:
– Disconnecting the battery cable at
battery connector P1 or
– Removing the jumper J1 located close
to the battery connector.
Both methods have the same effect.
• Connect the battery or jumper.
• Assemble the control unit.
• Connect mains power and gas supply to
the ventilator.
• Set the Mode selector to "Volume Control"
("Volume Control/Support" on SV 300A).
• Wait approx. 30 seconds and make sure
that no "Technical error" information is
shown in the "Alarm and messages"
display.
• Set time and date using e.g. a Servo Screen
390 connected to the port N82 on SV 300.
Siemens-Elema AB
Servo Ventilator 300/300A
"3. Disassembling and
E382 E380E 061 01 03 01
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