05/19
Model 1920FR
Page 3 of 7
TROUBLESHOOTING 1920FR
PROBLEM
REPAIR CHECKLIST
Insufficient bubbler flow.
1a.
Check that inlet screwdriver stop valve is wide
open (customer supplied). Turn
counterclockwise.
b.
Verify minimum 30 psi flowing supply pressure.
c.
Adjust valve to increase flow. See 6518FR/
6521FR Valve Manual.
d.
Clean screens (inside nozzle body). Unscrew
nozzle insert and very gently activate water
supply to pop out qty. 3 screens (be careful not to
lose screens). Remove any debris clogging the
screen openings and place back into nozzle body.
Reassemble nozzle insert.
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