L.B. White CP400 Owner's Manual And Instructions

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Contents

L.B. White CP400 Owner's Manual And Instructions Manual pdf 14 page image

To replace the switch, remove the screws, spacersand nuts holding the switch to the burner plate. SeeFigs. 9 and 10.FIG. 9FIG. 10TESTINGThe switch should be tested annually.1. Remove the switch assembly. Apply a small,soft flameto the sensing disk of the switch. See Fig. 11. Becareful not to melt the switch’s plastic housing whenconducting this test.2. Within a short time, you should hear the contacts ofthe switch opening.3. Allow the switch to cool. The switch contacts willclose. Check for electrical continuity across the switchterminals to ensure contacts have closed.FIG. 11AUTO RESET BACKFLASH SWITCH14131. Loosen the compression nut at the outlet of thevariable rate valve. See Fig. 12.2. Remove both screws securing the valve bracket tothe heater panel.3. Remove the valve assembly from the heater andreplace components as needed.FIG. 12VARIABLE RATE VALVE AND GAS CONTROL VALVESCREWSSWITCHSCREWSCOMPRESSIONNUTVARIABLE RATE VALVEGAS CONTROL VALVENUTS AND SPACERS