Troubleshooting
Troubleshooting
Problem | Cause | Solution | |
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Pressure is higher on one side | Pump intake valve partially plugged. | Clean pump intake valve. | |
when setting pressure with function |
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Air in hose. Fluid is compressible. | Purge air from hose. | ||
knob. | |||
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| Unequal size hoses. | Use matching hoses. | |
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Pressures are not balanced when | Feathering the valve lever to | When opening or closing the valve, | |
running but pressure is generated | decrease the flow rate through the | always move the lever all the way. | |
and holds on both strokes. | gun. | Do not try to control the flow rate by | |
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| partially opening the lever. | |
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| Unequal viscosities. | Check that A (ISO) and B (RES) | |
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| chemicals are within the chemical | |
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| manufacturer’s specified applica- | |
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| tion temperature range. | |
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| Change restrictor at mix point to | |
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| balance back pressure. | |
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| Restriction on one side. | Clean mix module, restrictors, or | |
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| check valves at mix manifold. | |
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A (ISO) side rich; lack of B (RES) | A (ISO) side gauge is low. | B (RES) side restriction down- | |
side. |
| stream of gauge. Check gun check | |
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| valve spring, mix module, or mix | |
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| manifold restrictor screen. | |
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| B (RES) side gauge is low. | B (RES) side material supply prob- | |
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| lem. Check B (RES) side inlet | |
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| strainer and pump intake valve. | |
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B (RES) side rich; lack of A (ISO) | A (ISO) side gauge is low. | A (ISO) side material supply prob- | |
side. |
| lem. Check A (ISO) side inlet | |
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| strainer and pump intake valve. | |
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| B (RES) side gauge is low. | A (ISO) side restriction downstream | |
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| of gauge. Check gun check valve | |
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| spring, mix module, or mix manifold | |
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| restrictor screen. | |
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Flow will not shut off when ball valve | Worn ball valve seat of ball. | Replace ball valve. See assembly | |
lever is closed. |
| specifications in illustration on | |
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| page 13. | |
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12 | 332198C |
