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Troubleshooting
TYPE OF PROBLEM WHATTO CHECK
Ifcheck is OK, go to next check WHATTO DO
Whencheck is not OK refer to this column
Sprayer does not
respond
1. Wrongvoltage and/or amperage 1.Check that power source matches sprayer
requirements
Sprayer will not prime or
takes too long to prime
1.Airin paint pump 1. Open prime valve to purge air from paint
pump
2. Inletstrainer clogged 2. Cleanstrainer
3. Suctiontube is loose 3. Tightenfittings
4. Lowerball is stuck
NOTE:Causedby insufficientcleaning and/or
notleaving paint thinner in sprayer.
4. Cleanlower ball
Sprayer loses prime
while spraying
1. Suctiontube is loose 1. Tightenfittings
2. Lowerball not sealing on down stroke 2. Checkfor:
•Largedebris holding ball open
•Wornor scarred lower ball
•Inletstrainer not being used
Sprayer does not have
enough pressure at gun
or pressure drops off
1. Wornout spray tip 1. Replacespray tip
2. Cloggedfilters 2. Cleanfilters
3. Filtrationbeing used for wrong coatings
(i.e. block fillers, elastomerics) 3. Operatewith no filter or change coating
4. Wrongsize filter mesh 4. Selectcoarserfilter mesh. 30 instead of 60,
60instead of 100
5. Hoseis too long and/or has wrong size
diameter. 5. Check sprayer instruction manual for
correctsize hose
Sprayer packings
wearingout too quickly
1. Operating sprayer with clogged or no inlet
strainer 1. Clean/installinlet strainer
2. Primingsprayer without using prime valve 2. Primesprayer with prime valve
3. Upper packings have not been inspected/
adjustedon regular basis 3. Adjustupper packings after spraying
2 --5 gallons of paint and then weekly
4. Throatseal liquid not being used 4. Keep packing nut/wet cup 1/3 full with
throatseal liquid
5. Wateror paint being left in sprayer 5. Alwaysleave paint thinner in sprayer
6. Wornpump cylinder 6. Replacepump cylinder
7. Kinkedor clogged suction tube 7. Replace suction tube
8. Sprayingaggressive coatings
(i.e.low and latex, zinc coatings) 8. Use alternate packing materials. Consult
yoursprayer instruction manual
9. Unrealisticexpectations of packing life 9. Packing lifevaries with fluids sprayed and
pressuresused
Premature wear on prime
valve
1. Pressure being relieved at prime valve and
notat gun 1. Relievepressure at gun
2. Wateror paint being left in sprayer 2. Alwaysleave paint thinner in sprayer