Scc-C - Sample Gas Cooler Problems - ABB CEMcaptain GAA610-M Operating Instruction

66 GAA610-M ADVANCED EMISSION GAS MONITORING SYSTEM | OI/GAA610-M-EN REV. B
... 12 Diagnosis / Troubleshooting
SCC-C – Sample gas cooler problems
Problem
Condensate in the Sample Gas Outlet
Cooler not running
Status-LED blinks with high temperature
Sample Gas Flow blocked
Inaccurate Temperature Indication
Condensate in gas outlet
Defective Sample Gas Cooler
Condensate in the Sample Gas Outlet
Display toggles between temperature and
error message Error 1
Display toggles between temperature and
error message Error 2
Cause
Ambient temperature < 5 °C
Sample gas cooler overloaded
Defective peristaltic pump
Defective pump hose
Cooling performance inadequate although
sample gas cooler not overloaded
Compressor motor breaker tripped
Sample gas paths contaminated
Defective temperature controller
Refrigerant escaping
Power supply disconnected
Defective motor breaker or winding, i.e. the
compressor motor is not running
Ambient temperature < 5 °C
Sample gas cooler overloaded
Defective peristaltic pump
Remedy
• Heat the downstream assemblies.
• Ensure sample gas inlet and operating specifications are followed.
See Sample gas inlet conditions on page 20.
• Replace the peristaltic pump.
Replace hose, see SCC-C – Replace peristaltic pump hose on
•
page 84.
• Provide adequate cooling air flow.
• The fan should operate.
• Clean condenser fins, see SCC-C – Clean condenser fins on page 85.
• Eliminate the thermal overload caused by the sample gas flow or
excessive ambient temperature.
• Clean condenser fins, see SCC-C – Clean condenser fins on page 85.
• Ensure sample gas inlet conditions and operating specifications are
followed. See Sample gas inlet conditions on page 20.
• Allow the compressor to cool before the next run.
• Contamination can result from the failure to remove dust or
sublimates. Ensure dust is removed before the sample gas enters the
sample gas cooler; eliminate sublimates prior to this point.
• Clean the sample gas lines and cooling system; consider the effects
of corrosion and reduced service life when using chemical cleaners
and flush with an inert gas in order to avoid any cleaning agent
influence on measurement results.
• Replace temperature controller.
• Send the sample gas cooler to the service department for service.
• Reconnect the sample gas cooler power supply.
• Measure the electrical resistance of the motor winding (guide value
is approx. 40 Ω).
• If the difference is considerable (with measuring circuit open or
short-circuited), then the motor breaker should be replaced.
• If the motor winding is defective, send the sample gas cooler to the
service department for repair.
• Heat the downstream assemblies.
• Ensure sample gas inlet conditions and operating specifications are
followed. See Sample gas inlet conditions on page 20.
• Exchange the SCC-C unit or consult service contact.