FLYGT Flygt 3069, Installation, Operation And Maintenance Manual

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Service item Action
Stator housing 1. Drain any liquid.
2. Check the resistance of the leakage sensor.
Normal value approximately 1500 ohms, alarm approximately 430 ohms.
Insulation Use a megger maximum 1000 V.
1. Check that the resistance between the ground (earth) and phase lead is more
than 5 megohms.
2. Conduct a phase-to-phase resistance check.
Junction box Check that it is clean and dry.
Lifting device Check that the local safety regulations are followed.
Lifting handle 1. Check the screws.
2. Check the condition of the lifting handle and the chain.
3. If necessary, replace.
O-rings 1. Replace the O-rings of the oil plugs.
2. Replace the O-rings at the entrance or junction cover.
3. Lubricate the new O-rings.
Overload protection and
other protections
Check the correct settings.
Personnel safety devices Check the guard rails, covers, and other protections.
Rotation direction Check the impeller rotation.
Oil housing If necessary, fill with new oil.
Electrical connections Check that the connections are properly secured.
Thermal contacts Normally closed circuit; interval 0–1 ohm.
Voltage and amperage Check the running values.
6.4.2 Overhaul
The basic repair kit includes O-rings, seals, and bearings.
For an overhaul, do the following in addition to the tasks listed under Inspection.
Service item Action
Support and main bearing Replace the bearings with new bearings.
Mechanical seal Replace with new seal units.
6.4.3 Service in case of alarm
For information about indication values for sensors, see Sensors connection on page 31.
Alarm source Action
FLS 1. Check for liquid in the stator housing.
2. Drain all liquid, if any.
3. Check the mechanical seal unit, the O-rings, and the cable entry, if
liquid was found.
Thermal contact Check the start and stop levels.
The overload protection Check that the impeller can rotate freely.
6 Maintenance
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