Emerson Process Management IM-106-340 Alarms Very Hi O2 Temp, Fault 6, High High Heater Temp

Oxymitter 4000

Figure 8-8. Fault 6, High High Heater Temp

	HEATER T/C
DIAGNOSTIC	HEATER	SW2
ALARMS	O2 CELL	ON
	CALIBRATION

CALIBRATION RECOMMENDED

Instruction Manual

IM-106-340, Rev. 4.0

May 2006

Fault 6, High High Heater Temp

Figure 8-8shows the electronic assembly for an Oxymitter 4000 with a membrane keypad (upper view) and an Oxymitter 4000 with an LOI (lower view).

Membrane Keypad

When Fault 6 is detected, the HEATER LED flashes twice, pauses for three seconds, and repeats.

TEST

POINTS

INC INC

HIGH LOW GAS GAS

DEC DEC

O2 CELL mV +

O2 CELL mv - HEATER T/C + HEATER T/C -

CAL

TEST GAS +

PROCESS -

% O2

TP1 TP2 TP3 TP4

TP5

TP6

J1 RED YEL GRN ORG

1.The High High Heater Temp alarm will activate when the thermocouple produces a voltage of 37.1 mV [1652°F (900°C)].

2.The triac and the temperature control may be at fault.

3.Remove power. Allow Oxymitter 4000 to cool for five minutes. Restore power.

4.If the condition repeats, replace the electronic assembly per "Electronic Assembly Replacement" in Section 9: Maintenance and Service.

KEYPAD

Alarms

Very Hi O2 Temp

LOI 37260024

LOI

When Fault 6 is detected, the LOI displays the "Very Hi O2 Temp" message.

1.The very high O2 temperature alarm will activate when the thermocouple produces a voltage of 37.1 mV [1652°F (900°C)].

2.The triac and the temperature control may be at fault.

3.Remove power. Allow the Oxymitter 4000 to cool for five minutes. Restore power.

4.If the condition repeats, replace the electronic assembly per "Electronic Assembly Replacement" in Section 9: Maintenance and Service.

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