SANDPIPER WR10 3/8 - Manual (Page 7)

Page 4 Rev 0614
TROUBLESHOOTING
Symptom
Pump cycles once
Pump will not operate
Pump cycles and will not
prime or flow
Pump running
sluggish/stalling
Product leaking through
exhaust
Premature diaphragm
failure
Breaking and bending
shafts
Potential Cause(s)
1 Incorrect pilot o-ring placement
2 Inner diaphragm plate installed backwards
3 Deadhead (system pressure meets or exceeds
air supply pressure)
4 Air valve or center block gaskets installed incorrectly
1 Pump is over lubricated
2 Lack of air (line size, PSI, CFM)
3 Worn o-rings
4 Wrong type of lubrication (attack on o-rings)
5 Debris in air valve
6 Clogged manifolds
7 Incorrect o-ring placement
8 Deadhead (system pressure meets or exceeds
air supply pressure)
1 Cavitation on suction side
2 Valve ball(s) not seating properly or sticking
3 Valve ball(s) missing (pushed into chamber)
4 Valve ball(s)/seat(s) damaged or attacked by product
5 Clogged suction line
1 Over lubrication
2 Icing
3 Clogged manifolds
4 Deadhead (system pressure meets or exceeds
air supply pressure)
5 Cavitation on suction side
6 Lack of air (line size, PSI, CFM)
1 Diaphragm failure, or diaphragm plates loose
2 Diaphragm stretched around center hole or bolt holes
3 Excessive air supply pressure
1 Cavitation
2 Excessive flooded suction pressure
3 Misapplication (chemical/physical incompatibility)
4 Wrong type of lubrication (attack on air side)
5 Incorrect diaphragm plates or plates on backwards
6 Incorrect shaft with corresponding elastomer
7 Start up at full air pressure
1 Build up of solids in water chamber
2 Loose diaphragm plates
Recommendation(s)
1 Reinstall pilot o-rings in correct positions
2 Reinstall inner diaphragm plate correctly
3 Check system for pressure ratio to pump
4 Install gaskets with holes properly aligned
1 Set lubricator on lowest possible setting or remove
• Elima-Matic is designed for lube free operation
2 Check the air line size and length, compressor
capacity (HP vs. cfm required)
3 Replace o-rings
4 Check compatibility of o-rings with lubrication
5 Clean air valve/filter
6 Clean suction or discharge manifolds/piping
7 Reinstall o-rings in correct position
8 Increase air supply pressure
1 Check suction condition (move pump closer to product)
2 Clean out around valve ball cage and valve seat area
• Replace valve ball or valve seat if damaged
• Use heavier valve ball material
3 Worn valve ball or valve seat
• Worn fingers in valve ball cage (replace part)
4 Check Chemical Resistance Guide for compatibility
5 Clean suction manifold and/or piping
1 Set lubricator on lowest possible setting or remove
• Elima-Matic is designed for lube free operation
2 Clean or replace exhaust muffler
3 Clean manifolds to allow proper air flow
4 Check system to locate deadhead (equilibrium)
• Increase air supply pressure
5 Check suction (move pump closer to product)
6 Check the air line size, length, compressor capacity
1 Replace diaphragms, check for damage and ensure
diaphragm plates are tight
2 Check for excessive inlet pressure or air pressure
• Tighten bolts to recommended torque
3 Check Operating Manual for recommendations
1 Enlarge pipe diameter on suction side of pump
1,2 Move pump closer to product
• Raise pump/place pump on top of tank to reduce
inlet pressure
2 Add accumulation tank or pulsation dampener
as close to the pump as possible
3,4 Consult Chemical Resistance Chart for compatibility
with products, cleaners, temperature limitations
and lubrication
5,6 Check Operating Manual to check for correct part
and installation
7 Start up pump slowly (manually or with Smart Start)
1 Flush pump, start pump slow
2 Tighten diaphragm plates when replacing diaphragms