Dwyer 1207A - Manual (Page 26)

1207A manual Page 26
10. ANALYZER PROBLEM SOLVING
If any problems are not solved with these solutions, contact us or an authorized repair center.
Fault symptom Causes / Solutions
• Oxygen too high
• CO2 too low • Air leaking into probe, tubing, water trap, connectors
or internal to analyzer.
• Oxygen cell needs replacing.
• Oxygen reading (- - - -)
• CO reading (- - - -) • Analyzer was stored in a cold environment and is not
at normal working temperature.
• Oxygen cell or CO sensor needs replacing.
• Pump is switched off.
• Batteries not holding charge
• Analyzer not running on mains
adapter
• Batteries exhausted.
• AC charger not giving correct output.
• Fuse blown in charger plug.
• Analyzer does not respond to flue
gas
• Particle filter blocked.
• Probe or tubing blocked.
• Pump not working or damaged with contaminants.
• Net temperature or Efficiency
calculation incorrect
• Ambient temperature set wrong during Automatic
Calibration.
• Flue temperature readings erratic • Temperature plug reversed in socket.
• Faulty connection or break in cable or plug.
• T flue or T nett displays (- - - -) • Probe not connected.
• X-Air, EFF, COa or CO2 display
(- - - -) • Oxygen reading is above 18%.
• Analyzer just continually beeps
• Turn dial back to MENU and press
.
• BAT only shows 65 with fully
charged NiMh batteries fitted
• This is not a problem and is to be expected as NiMh
batteries only deliver 1.25 V per cell whereas
Alkalines deliver 1.5 V per cell. Fresh alkalines might
give a BAT value of 80 or so.