Xylem FLYFT P7900, Installation, Operation And Maintenance Manual

Page: 51 / 76

Type of service Purpose Interval
Periodical inspection To prevent operational
interruptions and machine
breakdown. Measures to
secure performance and
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.
12,000 hours or 3 years, whichever comes
first. 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.
24,000 hours or 6 years, whichever comes
first. 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).
6.2.1 Inspection
CAUTION: Compressed Gas Hazard
Air inside may cause parts or liquid to be propelled with force. Be careful when opening.
Regular inspection and service of the pump makes sure that the operation is more reliable.
Do the following to service the pump:
Part to service Action
Pump exterior Check the entire pump and the cables for external mechanical damage.
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.
3. Check that the leads and cable entry screws are correctly connected and
tightened to the correct torque.
Lifting handle Check the lifting handle for corrosion or other damage.
Junction box 1. General:
Check that it is clean and dry.
If it is wet:
a. Check the cable entry.
b. Replace the O-rings. Fit new O-rings to all O-ring seal joints which are
opened during inspection.
2. Terminal board: Check that the connections are properly secured.
Junction box
insulation: Drive units
up to 1.1 kV
Check the condition and function. See Check the insulation, up to 1 kV drives
or generators
on page 51.
6 Maintenance
P7900 Installation, Operation, and Maintenance Manual 49