UTICA BOILERS UB90-50 Installation Manual page 56

TROUBLESHOOTING CHART 1
!
ELECTRICAL SHOCK HAZARD MAY CAUSE
SERIOUS INJURY OR DEATH.
The following procedures may expose you to dangerous line
voltage. Use caution to avoid touching live electrical con-
tacts. Service must be performed by a trained, experienced
service technician.
What to do if you smell gas:
• Do not try to light any appliance
• Do not touch any electrical switch; do not use any
phone in your builidng.
• Immediatley call your gas supplier from a neighbor's
phone. Follow the gas supplier's instruction.
• If you can not reach your gas supplier, call the fire
department.
Should overheating occur or the gas supply fail to shut off,
do not turn off or disconnect the electrical supply to the
pump. Instead, shut off the gas at a location external to the
appliance.
Do not use the boiler if any part of the gas control system
has been under water a qualified service technician should
inspect the boiler and replace any part of the control system
and any gas control which has been under water.
Use only your hand to turn the gas control knob. Never use
tools. If the. Knob will not turn by hand. Don't try to repair
it. Force or attempted repair may result in a fire or explo-
sion.
TROUBLESHOOTING
WARNING
56