9023927 - 2nd edition - May 2007
Page 25 of 72 Pages
Maintenance
Replacing the pump
●
Disable the supply voltage.
●
Remove the cover of the Polytron 7500. To do this
1
gently pull apart the cover on both sides and
2
lift upwards.
Replace the pump for the measurement branch
— Pump on the right side infront of the pyrolysis oven.
●
Remove the connector of the pump.
●
Remove the upper holder of the pump from the middle sheet.
●
Remove the hose from the pump and insert it into the new pump at the same
position.
●
Refit the new pump (without blue label) sideways on the lower holder.
●
Insert the upper holder of the pump into the middle sheet and pull it through.
●
Insert the connector of the new pump into the socket on the printed circuit board.
Ensure correct polarity! Blue cable to the outside.
Replace the pump for the principal branch
— Pump on the left side infront of the rear wall.
●
Remove the connector of the pump.
●
Remove the upper holder of the pump from the middle sheet.
●
Remove the hose from the pump and insert it into the new pump at the same
position.
●
Refit the new pump (with blue label) sideways on the lower holder.
●
Insert the upper holder of the pump into the middle sheet and pull it through.
●
Insert the connector of the new pump into the socket on the printed circuit board.
Ensure correct polarity! Blue cable to the outside.
●
Refit the cover of the Polytron 7500.
●
Switch on power supply.
●
Wait until the sensor has fully warmed up.
— The Polytron 7500 is ready for use again.
Attention!
When the unit is opened
,
there is the danger of scalding yourself on hot
parts of the Polytron 7500.
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