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NOTE: Check all possible solutions in the chart before disassembling any parts.
PROBLEM
Valve will not dispense fluid.
Fluid flow from dispense valve is low
or irregular.
Leakage at valve seat.
Fluid meter registers incorrectly
or not at all.
Dispensing Valve Service and Adjustment
1. To clean or replace the valve seal (1f), screw the
valve nozzle (1e) off the valve housing (1k). Re-
move the gasket (1h). Unscrew the retaining screw
(1g) from the valve stem (1j). Remove the valve
seal (1f). See the Parts Drawing, page 5. Clean
and inspect all parts and replace as necessary.
Reassemble the valve, making sure the gasket
(1h) is in place.
2. To adjust the dispensing valve, drive the pin (1m)
out of the handle (1b) with a 1/8 in. drift pin. Re-
move the valve handle (1b) from the stem (1j). See
Parts Drawing, page 5. Turn the adjusting nut
(1c) upward until a small gap (0.040 in. maximum)
exists between the handle (1b) and the valve
housing (1k) when the valve is reassembled.
Reinstall the handle on the stem. Reinstall the pin.
4
307637
Troubleshooting
CAUSE
Pump is not operating.
Valve diffuser is clogged.
Strainer, if used, is clogged.
Electronic meter is malfunctioning.
Pump is malfunctioning.
Valve diffuser is clogged.
Strainer, if used, is clogged.
Valve seal is worn or damaged.
Valve spring is weak or broken.
Electronic control is malfunctioning.
Service
NOTE: Clearance between the valve handle (1b) and
valve housing (1k) is necessary to ensure proper dis-
pensing valve operation.
3. To replace the valve stem (1j), spring (1l) or pack-
Electronic Meter
See instruction manual 308687 (included).
SOLUTION
Check pump. See manual 307906.
Remove and clean valve diffuser.
Remove and clean strainer.
Replace dispense meter. See manual
308687.
Check pump. See manual 307906.
Remove and clean valve diffuser.
Remove and clean strainer.
Replace.
Replace.
Replace: see manual 308687.
ings (1d), remove the valve handle (1b) as de-
scribed in step 2. Screw the valve nozzle (1e) off
the valve housing (1k). Remove the gasket (1h).
Screw adjusting nut (1c) off the valve stem. Pull
the stem out through the bottom of the valve
housing. See Parts Drawing, page 5. Clean and
inspect all parts and replace as necessary. Reas-
semble valve. Adjust it as described in
step 2.
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