Instructions / Assembly

CONTROL TIPS

A ROBERTSHAW

INFORMATIONAL GUIDE

CARE AND MAINTENANCE OF THE ROBERTSHAW

41-400 and 41-200 SERIES NORTON IGNITORS

THIS ISSUE

The Robertshaw ignitor by Norton is made of high-purity Crystar

recrystallized silicon carbide. Crystar

is a proprietary Norton advanced ceramic that combines physical and thermal strength with stable

electrical properties. Ignitor leads are enclosed with a high-temperature ﬁ berglass insulation which

provides total electrical protection. The ignitor is cemented in a steatite or cordierite block for protection

against current leakage under high humidity conditions. Norton ignitors are engineered for easy

handling, simple installation, and trouble-free operation.

Installing the Ignitor

The silicon carbide element can be handled without damage. However, it is better and safer to handle the

ignitor by the ceramic holder. The myth that the silicon carbide tip cannot be handled because body oils

cause contamination is untrue.

Cracks may occur by hitting the silicon carbide tip or dropping the ignitor.•

Check the appearance of the ignitor. The sleeving over the wire should be examined for chaﬁ ng, •

burned portions, or cuts in the wire. The connectors should be properly seated and free from

oxidation and/or corrosion.

Carefully tighten the mounting screw ﬁ rmly when installing the ignitor. • WARNING: Overtightening

may crack the ceramic block. Maximum torque on the ceramic block is 12 inch pounds.

501 RANGE IGNITOR ONLY: The ignitor and valve must be calibrated to ensure proper performance. •

Current must reach the given speciﬁ cations in order to supply adequate ignition temperature to open

the gas valve. Check to be sure the proper valve is used.

CAUTION: The use of the 601 mini-ignitor as a ﬂ ame sense is the sole responsibility of the user/OEM to

engineer, test, and approve. If it is determined to be used as a ﬂ ame sense, then the user/OEM assumes

all risks. Norton Company does not recommend the use of the ignitor as a ﬂ ame sense.

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CONTROL TIPS A ROBERTSHAW® INFORMATIONAL GUIDE THIS ISSUE CARE AND MAINTENANCE OF THE ROBERTSHAW 41-400 and 41-200 SERIES NORTON IGNITORS The Robertshaw ignitor by Norton is made of high-purity Crystar® recrystallized silicon carbide. Crystar is a proprietary Norton advanced ceramic that combines physical and thermal strength with stable electrical properties. Ignitor leads are enclosed with a high-temperature fiberglass insulation which provides total electrical protection.
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Testing the Ignitor • • • • • Perform a simple room temperature resistance (RTR) test after installing a new ignitor. (Remember to disconnect the leads to ensure that only the resistance of the ignitor is measured.) If the RTR is not to specification (see Ignitor Specifications, below), the silicon carbide tip is cracked. Perform an RTR test when troubleshooting an appliance where the ignitor is suspect.