Even with proper selection and installation hose life may be significantly reduced without a continuing maintenance program. Frequency should be determined by the severity of the application and risk potential. A maintenance program must include the following as a minimum:
1. Visual inspection of the Hose/Fitting
Any of the following conditions require immediate system shut down and replacement of the hose assembly:
- Slippage or movement of fittings on the hose
- Damaged, cut, or abraded cover
- Hard, stiff, head-cracked, or charred hose
- Cracked, damaged, or badly corroded fittings
- Leaks at the fitting or hose
- Kinked, crushed, flattened, or twisted hose
- Blistered, soft, degraded, or loose cover
- Unusual noise, odor, or heat
2. Visual inspection of other components
The following items must be tightened, repaired, or replaced; as required
- Leaking port conditions
- Remove excess dirt build up
- Clamps, guards, shields
- System fluid level, fluid type, and any air entrapment
3. Functional test: Operate the system at maximum operating pressure and check for possible malfunctions and freedom from leaks.
4. Replacement intervals: Specific replacement intervals must be considered based on previous service life, government or industry recommendations.