1. Pump Not Drawing Detergent or
Water Exiting Detergent Tube
1. Check that nozzle is in low/chemical position. (figure 25)
2. Check that metering valve on pickup filter is open. (figure 25)
3. Check pickup filter for clogs.
4. Check detergent tube for holes and kinks.
5. Remove detergent check valve assembly.
• Remove detergent tube.
• Unscrew nipple.
• Remove detergent check valve. (figure 26)
• Inspect O-ring, ball and spring. (inset figure 26)
• If necessary, replace ball, spring and O-ring.
• If ball sticks to O-ring, use screw driver or paper clip to
push ball back.
Note: Leaving detergent in pump will cause ball to stick.
6. Put silicone grease on hose nipple and place O-ring on nipple.
The grease holds the O-ring to the nipple.
7. Reassemble, placing spring behind ball to push against
detergent check valve.
8. Reassemble and reinstall nipple and hose.
B. Pump is Cycling
1. Remove nozzle insert with a screwdriver. (figure 27)
2. Pull out nozzle insert (figure 28)
3. Check nozzle for wear and damage.
4. Check that opening through nozzle is not clogged
and clear if necessary.
16
SECTION 4 / DETERGENT DELIVERY FAILURE SOLUTIONS
A. Pump Not Drawing Detergent or Water Exiting Detergent Tube
B. Pump is Cycling
figure 25
Figure 26
Figure 27
Figure 28
nipple
Pump 777 9/28/01 3:56 PM Page 16
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