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Servicing and Maintenance
Before following either or both procedures, close the outlet
shutoff valve, then close the inlet shutoff valve. Bleed residual
pressure from the assembly by opening test cocks No. 4, No. 3,
and No. 2 in this sequence.
Also, observe the following points.
• Rinse all parts with clean water before reassembly.
• Do not use any pipe dope, oil, grease, or solvent on any
parts unless instructed to do so.
• Do not force parts. Parts should fit together freely. Excess
force can cause damage and render the assembly inopera
ble.
• Carefully inspect seals and seating surfaces for debris or
damage.
• After servicing, repressurize the assembly and test to ensure
proper operation.
• For more information on maintenance, check with your
FEBCO representative or go to FEBCOonline.com.
Check Valve Disassembly
1. Remove the cover bolts using the appropriate size wrench.
2. Remove the spacer between the checks by grasping the
flanged end of spacer and pulling straight up.
3. Remove the inlet check assembly by pulling it out from
the body bore, in the direction of flow, until it is completely
exposed, then lift out of body.
4. Remove the outlet check assembly by placing the tip of
a medium-sized, flat-slotted screwdriver in the slot of the
seat and pry the check assembly back until the O-ring is
exposed. Then, using your fingers, pull it out from the body
bore until it is completely exposed. Lift check assembly from
the body.
5. Disassemble and reassemble both check assemblies in the
same manner. To disassemble, grasp the seat section in
one hand and the guide section in the other hand. Rotate
in a counterclockwise direction (approximately 1⁄8 turn) until
the two parts disengage.
6. Inspect for debris, damage, or fouling of the seat disc. Clean
the parts and replace any as required.
7. Reassemble the valve in the reverse order of disassembly.
Ensure the orientation of the first check assembly is
positioned so that one (#2) of the four (4) flow path windows
faces down toward the relief valve.
Troubleshooting
Call customer service if you need assistance with technical details.
SYMPTOM
Continuous relief valve discharge
Intermittent relief valve discharge
CAUSE
Debris on check seating surfaces
Debris on relief valve seating surfaces
Inlet pressure fluctuations
Downstream pressure surges
Relief Valve Disassembly
1. Detach the activation module, if installed, from the flood
sensor.
2. Use a #2 Phillips screwdriver to remove the sensor from the
relief valve body.
3. Remove the relief valve cover bolts, cover, and relief valve
assembly in accordance with the FEBCO maintenance
manual.
4. Inspect/clean seat surfaces, seals and diaphragm. Replace
worn or damaged parts as required.
5. Reassemble the relief valve in the reverse order of
disassembly.
6. Reattach the flood sensor to the relief valve and mount the
activation module to the sensor.
Test Procedure
Check the ASSE Series 5000 manual for an appropriate test
method that is consistent with local codes of the area.
SOLUTION
Disassemble and clean
Eliminate fluctuations
Eliminate surges
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