en – Original Instructions
32 e-SHE, e-SHS – Additional Installation, Operation and Maintenance Instructions
6.3 Maintenance schedule
Maintenance intervals are only valid if the unit has been selected and installed according to
Xylem guidelines.
the system
•
Check for liquid leaks
•
Check the tightness of the screws and bolts
Every 4000 hours of operation or every year,
when the first of the two limits is reached
the pump
Measure the pressure at zero flow rate and compare it with the
pressure measured during initial start-up; if the pressure has
decreased by more than 15%, check the condition of impeller,
pump body and wear rings
•
Check for unwanted noise and vibrations
the motor
Check that the insulation resistance is greater than 500 MΩ,
applying a test voltage of 500 Vdc for 1 minute
•
Check the terminal board for any signs of overheating and arc
flashes
•
Check the condition of the cooling fan and clean it
Replace the mechanical seal
Every 20000 hours of operation or every 2
years, when the first of the two limits is reached
Replace the motor bearings (only for greased for life bearings)
Every 20000 hours of operation or every 5
years, when the first of the two limits is reached
replacement
Top up or replace motor bearing grease (only for regreasable
bearings)
Refer to the data plate and instructions of the
motor for information on the type of grease and
how often it needs to be topped up or replaced
6.4 Long periods of inactivity
1. Close the on-off valve on the suction side.
2. Completely empty the unit.
3. Protect the unit against freezing.
4. Rotate the shaft by hand several times every three months.
5. Before restarting the unit, check that the shaft is rotating freely, without mechanical
impediments.
6.5 Spare parts ordering
Identify the spare parts with the product codes directly on the site www.lowara.com/spark.
Contact Xylem or the Authorised Distributor for technical information.
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