Service
Service
Use only Genuine Graco Repair Parts.
Troubleshooting
See separate system component manuals for service instructions. For pump service see manual 312350. For vent valve service see manual 309099.
Problem | Cause | Solution | |
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System does not build sufficient | Pump malfunction. | Refer to manual 312350. | |
pressure. |
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Pump turned off too soon. | Increase timer “pump on” setting. | ||
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| Increase hydraulic flow rate to pump. | |
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| Solenoid malfunction. | Repair or replace solenoid. | |
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| Too low or no hydraulic supply. | Turn pressure up or supply on. | |
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| Vent valve seal failure. | Replace seal. | |
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| Vent valve needle/seat failure. | Replace needle and seat. | |
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| Reservoir out of grease. | Fill reservoir. | |
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| Broken or leaky supply/branch line. | Tighten connections and/or replace | |
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| line(s). | |
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| Injector failure. | Repair or replace injector. | |
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| Pressure in tank line too high due to | Remove tank line restrictions. | |
| restrictions in tank line or plumbing | Use larger plumbing. | |
| too small. | ||
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Lubricant dispensed from pressure | System pressure set too high. | Decrease hydraulic pressure to | |
relief valve. |
| pump. | |
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Pump runs too fast. | Reservoir out of lubricant. | Fill reservoir. | |
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| Pump cavitation. | Install a follower plate. | |
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| Leak in distribution system. | Repair leak. | |
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Lubricant coming out of breather. | Reservoir overfilled. | Drain lubricant until overflow stops. | |
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Pump will not start. | No hydraulic supply. | Verify/check hydraulic supply. | |
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| Solenoid malfunction. | Replace solenoid. | |
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| No electrical supply to lubrication | Turn on electrical supply. | |
| controller. |
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| Lubrication controller malfunction. | Refer to controller manual 308950. | |
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| Pump malfunction. | Refer to pump manual 312350. | |
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312349G | 13 |
