Replacing The Pump - Dräger Polytron 7500 Instructions For Use Manual

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.
Attention!
When the unit is opened, there is the danger of scalding yourself on hot
parts of the Polytron 7500.
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.
9023927 - 2nd edition - May 2007
Maintenance
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Page 25 of 72 Pages
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