2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000
4.5-1
4.5
4.5
Maintenance OH 900, ON 900, ONH-2000
Imprint of all O-rings wider than 2 mm ?
Is the air pressure set to 2.0 bar ( 30 psi ) ?
Is the carrier gas set to 1.5 bar ( 22.5 psi ) ?
Adjust lower furnace section ( see
2.8
)
Check lower electrode
Is the pressure switch change set to 1.0 bar ( 15 psi ) ? ( see
2.2
)
Does the thermostabilisation of the IR cell and TC cell work correctly?
( see
2.5
and
2.14
)
Check the cooling system for leaks
Does the left-side gas flow meter indicate
±
30 l/h ?
Does the right-side gas flow meter indicate
±
15 l/h ?
Check the power regulation ( see
2.16
)
Check the water temperature cut-off system ( see
2.15
)
Check the furnace temperature alarm ( see
2.15
)
Tighten the 96-pole plug
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