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Service and Maintenance
Before following either or both disassembly 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
inoperable.
• 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. Unscrew the cover and remove the spring and disc holder
assembly.
CAUTION
!
Practice safety. The covers are spring loaded.
2. Inspect the disc and seat area, and clean out any debris.
Replace worn or damaged parts as required.
3. Apply FDA Approved grease to the cover O-ring and
reassemble the valve in the reverse order of disassembly.
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.
3. Remove capscrews, diaphragm cover, diaphragm, and
port bushing of relief valve and then remove the internal
assembly from the body by pulling straight out.
4. Inspect for debris, damage, or fouling of the seat disc. Clean
and/ or replace parts as required.
5. Reassemble 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.
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 seat
Inlet pressure fluctuations
Downstream pressure surges
SOLUTION
Disassemble/clean
Eliminate fluctuations
Eliminate surges
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