4. Refit the oil plug and tighten.
Tightening torque: 10-40 Nm (7.5-29.5 ft-lb).
6.3 Service the pump
Type of service Purpose Inspection interval
Initial
inspection
To make a check up of the pump condition by a Xylem authorized
service representative and, based on the result and findings from
these measures, to determine the intervals for periodical
inspection and major overhaul for the specific installation.
Within the first year of
operation.
Periodical
inspection
To prevent operational interruptions and machine breakdown.
Measures to secure performance and pump efficiency are defined
and decided for each individual application. It can include such
things as impeller trimming, wear part control and replacement,
control of zinc-anodes and control of the stator.
Up to every year
Applies to normal applications
and operating conditions at
media (liquid) temperatures
<40°C (104°F).
Major
overhaul
To secure a long operating lifetime for the product. It includes the
replacement of key components and the measures that are taken
during an inspection.
Up to every 3 years
Applies to normal applications
and operating conditions at
media (liquid) temperatures
<40°C (104°F).
NOTICE:
Shorter intervals may be required when the operating conditions are extreme, for
example with very abrasive or corrosive applications or when the liquid temperatures
exceed 40°C (104°F).
6.3.1 Inspection
Service item Action
Cable 1. If the outer jacket is damaged, replace the cable.
2. Check that the cables do not have any sharp bends and are not
pinched.
Connection to power Check that the connections are properly tightened.
Electrical cabinets Check that they are clean and dry.
Impeller 1. Check the impeller clearance.
2. Adjust the impeller, if necessary.
Stator housing 1. Drain all liquid, if any.
2. Check the resistance of the leakage sensor.
Normal value approximately1500 ohms, alarm approximately
430 ohms.
6 Maintenance
Flygt 3085 Installation, Operation, and Maintenance Manual 43
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