Important Safety Information; Safety Tips For Service; Post-Service Checks - Noritz NR50-OD Service Manual

Important Safety Information

To prevent damage to property and injury to the user, the icons below warn of
varying levels of risk.
Ignoring this indication will cause an immediate danger of death or
Warning
serious injury.
Caution Ignoring this indication may result in death or serious injury.
Prohibited.

1. Safety Tips for Service

Wear the appropriate clothing and protective gear:
Caution
Use only the appropriate tools and parts:
Warning
Modification of the unit is prohibited:
When servicing:
Warning
Do not short circuit any safety device on this appliance:
Exhaust and gas leakage caution:
Warning

2. Post-Service Checks

Check parts for leaks:
Caution
Check for combustibles:
Caution
Check insulation resistance:
Warning
Properly reconnect the power supply:
Warning
In order to prevent injury or accident, wear a protective helmet, safety boots and a lifting
belt whenever necessary.
Only use replacement parts manufactured by Noritz for this model as listed in the
Installation Manual Parts List for service on this unit. Use appropriate tools.
Do not attempt to modify or alter the unit. This will cause a fire hazard and a risk of
electrical shock.
Disconnect the power supply during maintenance and repairs to reduce the risk of
electric shock. If it is necessary to have the electricity connected during repairs, use
extreme caution not to touch parts that may cause a shock.
If a safety device is not functioning properly, replace the part. Do not under any
circumstances short circuit the part.
Always check for leaks when installing or modifying the exhaust vent or gas piping.
Confirm that there are no gas, water, or exhaust leaks regardless of whether the
service performed could have caused them.
If the unit is installed indoors, check that the flue collar and vent pipe are installed
correctly and that they are in good condition. Confirm that there are no gas, water or
exhaust leaks regardless of whether the service performed could have caused them.
After service or maintenance is completed, check that there are no combustibles in
the vicinity of the unit.
After service or maintenance is completed, measure the resistance between the elec-
trical wires and ground. If it is less than 10M:, there is a risk of electrical shock.
Confirm that the power supply has been reconnected properly after service or main-
tenance is completed. Also confirm that there is no dust or other obstacles that might
cause an electric shock or a fire hazard.
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