Checking The Frequency Of Starts And Stops; Lubrication; Temporary Disabling; Periodical Inspection - Pentair STA-RITE DHI 2-40 Instructions De Service

EN

4.3 CHECKING THE FREQUENCY OF STARTS AND STOPS

To check the frequency of starts and stops, perform the following operations (Check the operation of the machine for an hour):
If the number of starts/stops is above 40, adjust the control equipment in order to reduce the frequency.
WARNING
Always check that the machine is filled. Never start the machine without fluid, as indicated under section "Operation",
"Priming"
CHAPTER 5
MAINTENANCE

5.1 LUBRICATION

• The gasket on the shaft is self-
adjusting. The sealing surfaces are
resistant to wear and are lubricated by
the pumped fluid
WARNING
If the machines are installed, used and serviced in accordance with the instructions and directions given in this manual,
they do not require lubrication. Follow the instructions and directions given in this manual.

5.2 TEMPORARY DISABLING

To disable the machine for a long period of time, perform the following operations.
Cut the electric system off by using a cut-off switch, if ambient temperature falls below the freezing temperature
of the pumped fluid, perform the following operations:
A - If the whole system has to be disabled, drain the system
B - If it is not necessary to drain the whole system:
• Close the gates on the delivery and
suction lines
• Remove the priming and drainage caps
WARNING
Before restarting the machine, fill it as indicated under sections "Operation" and "Priming"
If the pump is used for applications with drinking water for human consumption and it is not used for a long period, repeat the
procedures listed in Installation chapter.

5.3 PERIODICAL INSPECTION

At regular intervals, perform the following inspections:
• Hydraulic performances
• Lack of fluid leaks
• Motor overheating
A - If check-ups do not reveal the presence of abnormal conditions, continue to use the machine until the next check-up
30
• The bearings of the machine are
lubricated by the pumped fluid
• Allow all the fluid to drain from the
machine
• Relay tripping time
• Start-up frequency
• Correct operation of automatic
controls
• The ball bearings of the motor are
self-lubricated with grease resistant
to heat
• Store the priming and drainage caps
for future use, without reassembling
them on the machine
• Vibrations
• Noise