9.2
Servicing/inspection
9.2.1 Supervision of operation
CAUTION
Increased wear due to dry running
Damage to the pump set!
▷
Never operate the pump set without liquid fill.
▷
Never close the shut-off element in the suction line and/or supply line during
pump operation.
CAUTION
Impermissibly high temperature of fluid handled
Damage to the pump!
▷
Prolonged operation against a closed shut-off element is not permitted (heating
up of the fluid).
▷
Observe the temperature limits in the data sheet and in the section on
Operating limits.
While the system is in operation, observe and check the following:
▪
Check the operation check run (if activated).
▪
Compare the start and stop pressures of the pumps with the data on the name
plate (using the pressure gauge).
▪
Compare the pre-charge pressure of the accumulator with the recommended
data. (
Close the shut-off elements under the accumulator and drain the accumulator via
the drain valve.
Remove the protective cap of the accumulator valve and check the pre-charge
pressure with the aid of a tyre pressure gauge.
Add nitrogen as necessary.
WARNING
Wrong gas
Danger of poisoning!
▷
Use only nitrogen to charge the accumulator.
▪
Check the rolling element bearings for running noises.
Vibrations, noise and an increase in current input occurring during unchanged
operating conditions indicate wear.
▪
Monitor the correct functioning of any auxiliary connections.
9.2.2 Check list for inspection
In the event that you decide to conduct your own inspections, proceed according to
the following check list at least once a year:
1. Check the pump and drive for quiet running and the mechanical seal for
integrity.
2. Check the shut-off, drain and check valves for proper functioning and tightness.
3. Clean the strainer in the pressure reducer (if applicable).
4. Check expansion joints for wear (if applicable).
5. Verify the pre-charge pressure level and check the accumulator for integrity, if
6. Check the automatic switching functionality.
7. Check the start and stop points of the pressure booster system.
9 Servicing/Maintenance
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Hya®-Solo DV
