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Troubleshooting your Chapin 12V 1.0 GPM pump
PROBLEM
Pump won't start
Pump will not prime
(No discharge with
motor running)
Pump will not shut-off
(output line closed and
no leaks)
Leaks from pump head
or switch
Get the most out of your Chapin pump
• Check system against operating standards yearly
• Replace the diaphragm and check against operating standards every 2 to 3 years
SPECIFICATIONS
Fits Chapin 15 and 25 gallon ATV sprayers
12 Volt DC, totally enclosed, non ventilated
Max amp rating: 3.0 MAX
Leads: 6" long
2 chamber positive displacement diaphragm pump, self priming, capable of being
run dry, demand or bypass model.
Priming Capabilities: 4 feet [1.2 ml)
Max Pressure: 60 PSI
3/8" Straight hose barb
CHECK
Correct voltage (+/-10%) and electrical connections
Fuse or breaker
Pressure switch operation
Rectifer or motor for open or grounded circuit
Locked drive assembly
Correct voltage at switch
Debris in strainer
Restriction (kinks) in inlet / outlet tubes
Debris / swelling in inlet / outlet valves
Air trapped in outlet line or pump head
Correct voltage to pump
Debris in pump inlet / outlet valves
Loose drive assembly or pump head screws
Pressure switch operations / adjustments
Loose screws at switch or pump head
Switch diaphragm ruptured or pinched
Punctured diaphragm if fluid is present
3E
Instruction Manual - English
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