4 Maintenance
4.1 Precautions
Before starting work, make sure that the safety instructions in the chapter
on page 3 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: Crush Hazard
Make sure that the unit cannot roll or fall over and injure people or damage property.
Make sure that you follow these requirements:
• Check the explosion risk before you weld or use electrical hand tools.
• Allow all system and pump components to cool before you handle them.
• Make sure that the product and its components have been thoroughly cleaned.
• 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.
Ground continuity verification
A ground (earth) continuity test must always be performed after service.
Maintenance guidelines
During the maintenance and before reassembly, always remember to perform these
tasks:
• Clean all parts thoroughly, particularly O-ring grooves.
• Change all O-rings, gaskets, and seal washers.
• Lubricate all springs, screws, O-rings with grease.
For an optimal corrosion protection, all O-rings and adjacent surfaces must be coated
with Exxon Mobil Unirex N3 or equivalent.
4 Maintenance
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Summary of Contents for Flygt 2620.172
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