Emerson ib-106-340cdr instruction manual Entire Probe Replacement, Heater Strut Replacement

Instruction Manual

IB-106-340CDR Original Issue January, 2002

Hazardous Area Oxymitter DR

b.Carefully align the new terminal block on the pins so that it sits flat in the housing. The round end of the terminal block should be on the opposite side of the housing con- duit ports and should not be able to rotate.

c.Tighten the three mounting screws and en-

Opening the termination housing will cause the loss of ALL hazardous per- mits. Opening the termination housing in hazardous areas may cause an ex- plosion resulting in loss of property, severe personal injury, or death. It may be required to get a hot work permit from your company safety offi- cer before opening the electronic housing.

4-5 ENTIRE PROBE REPLACEMENT

Do not attempt to replace the probe until all other possibilities for poor performance have been considered. If probe replacement is needed, see Table 7-1for part numbers.

a.Follow the instructions in paragraph 4-3ato remove the Hazardous Area Oxymitter DR from the stack or duct.

b.Remove four screws (15, Figure 4-1)and washers (14). Separate the electrical con- nectors between the heater strut assembly and the electrical barriers on the termination housing. The probe and termination housing can now be separated.

c.When installing the new probe, make sure that o-ring (27) is in good condition. Con- nect the two electrical connectors between the heater strut and the electrical barrier on the termination housing. Make sure the conduit port of the termination housing is on the same side as the CAL and REF gas ports.

d.Install the four washers (14) and screws (15) and tighten.

e.Replace the housing cover (20) and ensure it is tight.

f.Follow the instructions in paragraph 4-3bto install the Hazardous Area Oxymitter DR into the stack or duct.

HEATER STRUT REPLACEMENT

This paragraph covers heater strut replacement. Do not attempt to replace the heater strut until all other possibilities for poor performance have been considered. If heater strut replacement is needed, order a replacement heater strut (Table 7-1).

Use heat resistant gloves and clothing when removing probe. Do not attempt to work on the probe until it has cooled to room temperature. The probe can be as hot as 800°F (427°C). This can cause severe burns.

a.Follow the instructions in paragraph 4-3ato remove the Hazardous Area Oxymitter DR from the stack or duct.

b.Remove four screws (15, Figure 4-1)and washers (14). Separate the electrical con- nectors between the heater strut assembly and the electrical barriers on the termination housing. The probe and termination housing can now be separated.

c.Once the probe and termination housing are separated, spring tension releases and the heater strut moves up. Carefully remove the CAL and REF gas silicon tubes by pulling them off the CAL and REF gas ports. Pull the silicon tubes off the CAL and REF gas lines.

d.Remove pressure clamp (28).

e.Remove tube nuts (26), and capillary breather tubes (23) from the CAL, REF, and VENT ports.