Crown GCX-16 Installation & Operation Manual page 27

GAS CABINET BASE CONVECTION STEAMER, GCX-16, GCX-24
10.0 TROUBLESHOOTING (Continued)
AUTOMATIC BLOWDOWN VALVE DOES NOT DRAIN
1. Defective blowdown valve.
2. Heat exchanger build up of scalant clogging drain lines and valve.
BOILER ACHIEVES PRESSURE SLOWER THAN NORMAL
1. Heavy build up of lime or scalant hampering heat transfer. Call for service to inspect interior
of boiler. Should a considerable amount of scalant be found, have steam lines, water level
control and valve also inspected.
BURNERS PRODUCE CARBON DEPOSITS
1. Wrong size orifices.
2. Burner air not adjusted properly.
3. Wrong gas supply.
4. Incorrect pressure at supply.
BURNERS DO NOT COME ON
1. Gas supply to unit is "OFF".
2. Manual shut off valve is "OFF".
3. Pilot is out.
4. Power supply is "OFF".
5. Water level has not been reached. Check water supply and water level control.
6. Pilot may require flame adjustment on option electronic ignition units.
7. If water at proper level, check relay which energizes pressure switch and gas valve.
8. Pressure switch may need to be replaced if relay is operating.
9. Check gas control. If energized but not operating, have replaced.
MANUAL 10064R2
INSTALLATION AND OPERATION MANUAL,
27 2020-07-13