2 MAINTENANCE
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PROBLEM | CAUSE | SOLUTION |
PUMP MAKES | ( 1 ) Partly clogged intake strainer or | ( 1A) Pump must receive intake fluid freely or |
LIKE GRAVEL | restricted intake pipe | cavitation results. Drain system, clean |
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| intake pipe and clean or replace strain- |
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| er |
| ( 2) Defective bearing | ( 2A) Replace pump |
| ( 3) Air leak at pump intake pipe joints | ( 3A) Tighten joints as required. |
PUMP SHAFT SEAL LEAKING | ( 1) Seal worn or damaged | ( 1A) Replace seals or pump. |
EXCESSIVE HEAT | ( 1) Continuous running | ( 1A) When over 140 degrees F or hot in |
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| comparison with circuit lines, pump |
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| should be shut down immediately. |
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| Before restarting, insure that fluid cool- |
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| ing capacity is adequate to remove sys- |
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| tem generated heat. |
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| ( 1B) Install oil cooler (air or water type) |
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| ( 1C) Install oil temperature shut down switch |
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| ( 1D) Check to be sure CYCON Power Pack |
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| has not been exchanged for Pressure |
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| Shifting Power Pack. |
| ( 2) Undersized hydraulic lines | ( 2A) Replace with larger hydraulic lines |
| ( 3) High ambient temp in relation to | ( 3A) Use lower viscosity oil |
| oil temp. |
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| ( 4) Excessive system leakage | ( 4A) Check system for bypassing or |
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| leaks |
RAPID WEAR | ( 1) Abrasive matter in the hydraulic oil being | ( 1A) Install adequate filter or clean. |
| circulated through pump | ( 1B) Replace oil more often and clean tank |
| ( 2) Viscosity of oil too low at working | ( 2A) Replace oil with factory recommended . |
| conditions |
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| ( 3) Pressure too high | ( 3A) Reduce pump pressures to factory |
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| specifications. |
| ( 4) Air recirculation causing pump noise | ( 4A) Tighten all fittings. |
ERRATIC OPERATION | ( 1) Valve sticking or binding | ( 1A) Disassemble & clean as necessary |
| ( 2) Viscosity of oil too high | ( 2A) Change oil to factory recommended vis- |
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| cosity |
| ( 3) Air in system | ( 3A) Check for leaks, tighten fittings |
| ( 4) Low oil | ( 4A) Fill reservoir with oil |
| ( 5) Low voltage | ( 5A) Check primary & secondary sides of |
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| transformer for correct voltage. |
OVERLOADS TRIP FREQUENTLY |
| ( 1A) Check for correct voltage (incoming |
| power.) | |
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| ( 1B) Check fuses or breakers at disconnect |
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| ( 1C) Check heater elements to be sure they |
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| are tight |
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| ( 1D) Check wiring from starter to motor to |
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| make sure all connections are tight |
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| ( 1E) Check motor leads to be sure all con- |
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| nections are tight surges or voltage |
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| NOTE: Excessive overload tripping and/or |
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| motor or coil failures may occur if voltage |
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| surges or voltage drops are frequent in your |
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| area. This circumstance can be remedied by |
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| the installation of phase protectors which drop |
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| power to the motor if surges are present. |
