Instruction Manual
OCX 8800
REPLACE TUBE
FITTINGS
Remove Tube Fittings
The OCX transmitter housings have special tube fittings that, if clogged or damaged, must be replaced with the same type of fitting. The special tube fittings have alpha or numeric codes etched on the fitting. Unetched tube fittings are standard 1/4 inch, stainless steel fittings.
‘F’ Type Fitting
The ‘F’ type fitting is a flame arrestor fitting used in all OCX 8800 hazardous area housings. The flame arrestor fitting prohibits spark or flame conduction from the housing. It requires a thread sealing compound (Loctite 567) and at least five threads engagement.
‘13’ Type Fitting
This fitting is an eductor drive air fitting for the OCX 8800 hazardous area housing. This is a 1/8 inch tube fitting with a
‘R’ Type Fitting
The ‘R’ type fitting is a reference air line fitting for the general purpose and hazardous area sensor housings. This is a 1/4 inch tube fitting with a
The OCX construction includes pipe thread sealant to seal fittings in all ports that pass through to an outer wall of the instrument housing base. Use the following instructions to loosen and remove tube fittings that are secured with pipe thread sealant.
Use heat resistant gloves when removing a damaged tube fitting. The pipe threads are bonded with a pipe thread sealant. The thread sealant softens at 450°F (232°C). The heated parts can cause severe burns.
1.Secure sensor housing (1, Figure
2.To soften the pipe thread sealant, use a propane torch to heat the tube fitting (3, 4, 5, or 6) to 450°F (232°C), minimum.
3.While heating the tube fitting, use a wrench to apply removal torque until the pipe thread sealant softens. Remove and discard the used fitting.
4.Use MEK or methylene chloride solvent to clean thread sealant residue from the internal pipe threads in the housing. Refer to applicable MSDS sheet for solvent handling precautions.
