Preset Metered Control Valve
SER 3690-C
Alemite Corporation
7
Revision (10-04)
Changes Since Last Printing
Initial Release
Troubleshooting Chart
Control Valve Indications
Possible Problems
Solutions
Reduced or zero flow
1. Filter Screen (31) clogged
2. Clogged system
1. Remove Filter Screen (31) and
clean or replace
2. Clean or replace system filter
No product flow
Nozzle (1) not open
Open Nozzle (1)
Continuous product flow
1. Foreign material on Valve Assembly (28)
2. Valve Assembly (28) worn or damaged
1. Disassemble, clean, and inspect
seat area. Check mating surfaces
and replace Valve Assembly (28)
as necessary. Locate and eliminate
source of foreign material.
2. Replace Valve Assembly (28)
Leakage at Swivel
Assembly (35)
1. Initial tightening of Swivel Assembly
(35) not sufficient
2. Seal worn or damaged
1. Tighten Swivel Assembly (35)
2. Replace Swivel Assembly (35)
Leakage at Cam (37)
Quad-Rings (36) worn or damaged.
Replace Quad-Rings (36)
Leakage at front end of Nozzle
Nozzle damaged
Replace Nozzle
Leakage at Extension Assembly 1. Initial tightening not sufficient
2. Thread sealant missing or inadequate
1. Tighten leaking connection
2. Apply thread sealant* to male pipe
threads
Lock Pawl (14) does not engage
with the screw on Lock Bar and
Screw Assembly (39)
Screw out of adjustment
Adjust the screw so it fully engages
Lock Pawl (14) in an upright position
when Lever (40) is pulled
* Do not apply thread sealant to the first two (2) threads. Contamination can occur.
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