Binks 104020-M2, Instruction Manual, Page: 11 / 16

Instruction Manual
Page 11 of 16 77-3236-R3.0
Fault Finding
Symptom Possible Cause Remedy
Pump will not
‘Prime’
a. Air getting into the suction
hose/manifold
b. Worn piston seals
c. Ball checks not seating correctly
a. Check seals and hose connections
b. Replace piston seals
c. Inspect, clean/replace balls/seats
Pump will not run a. No Air or Fluid supply
b. Air piston seal worn.
c. Pilot valve assemblies inoperable.
d. Main air valve inoperable
e. QE diaphragm defective
f. Ball checks not seating
a. Check air and fluid supply ball valves
and supply hoses.
b. Replace Piston seal
c. Switch/interchange pilot valves to
isolate faulty pilot valve and
clean/replace.
d. Check clean/replace Air valve.
e. Check for constant exhaust air when
pump is not running. Check/replace
QE diaphragms
f. Inspect, clean and/or replace balls
and seats.
Pump runs but has
excessive
pulsation a. Air getting into fluid line, air
supply restricted.
b. Obstructed fluid ball checks.
c. Worn air motor piston seals.
d. Worn/failed air motor shaft seals.
e.
Worn fluid piston seal.
f. Air exhaust restricted.
a. Check seals and hose connections.
Check air supply
b. Remove, clean, and inspect seat,
ball, and ball cage. Replace if
suspect or worn.
c. Replace air motor piston seal.
d. Disassemble pump as required to
replace air motor shaft seals.
e. Replace fluid piston seal.
f.
Check QE diaphragms and exhaust
outlets.
Paint leaking into
detection hose
(27)
Air bleeding from
Endcaps (43 &44).
a. Bellows seal failure
b. Air motor shaft seal leaking.
a. Replace bellows seal (30)
b. Check air motor shaft seal (5),
replace as necessary