Xylem FLYFT P7900, Инструкция по установке, эксплуатации и обслуживанию

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6 Maintenance
6.1 Precautions
Before starting work, make sure that the safety instructions have been read and understood.
DANGER: Crush Hazard
Moving parts can entangle or crush. Always disconnect and lock out power before servicing
to prevent unexpected startup. Failure to do so could result in death or serious injury.
WARNING: Biological Hazard
Infection risk. Rinse the unit thoroughly with clean water before working on it.
CAUTION: Thermal Hazard
The surfaces or parts of the unit may become hot during operation. Allow surfaces to cool
before starting work, or wear heat-protective clothing.
The following requirements apply:
• Make sure that all safety guards are in place and secure.
• Make sure that equipment is in place so that the unit cannot roll or fall over during the
maintenance process.
• Make sure that you have a clear path of retreat.
• Never work alone.
• Check the explosion risk before you weld or use electrical hand tools.
• Before starting work, make sure that the work area is well-ventilated.
• Do not open any vent or drain valves or remove any plugs while the system is
pressurized. Make sure that the pump is isolated from the system and that pressure is
relieved before you disassemble the pump, remove plugs, or disconnect piping.
• Depressurize and empty the coolant system for T and Z installations, and all installations
with external cooling.
Ground continuity verification
A ground (earth) continuity test must always be performed after service.
6.1.1 Falling
CAUTION: Fall Hazard
Slips and falls can cause severe injuries. Watch your step.
To minimize the risk of falling, observe the following:
• Use appropriate personal protection equipment when working in or near open basins,
shafts, or trenches.
6 Maintenance
P7900 Installation, Operation, and Maintenance Manual 47