KSB Delta Solo Compact MVP Series, Инструкция по установке и эксплуатации

Страница: 30 / 40

8 Servicing/Maintenance
30 of 40
KSB Delta Solo Compact
1983.848/01-EN
Maintenance interval Servicing/maintenance work
At least once a year Check the automatic switching functionality.
Check the cut-in levels and cut-out levels.
Check the inflow, inlet pressure, lack-of-water monitoring, flow monitoring and
pressure reducer.
Check the inlet tank and the float valve (if applicable). Check the overflow for
integrity and cleanliness.
8.2.3 Setting the pre-charge pressure
WARNING
Wrong gas
Danger of poisoning!
▷ Use only nitrogen to charge the accumulator.
CAUTION
Pre-charge pressure too high
Damage to the accumulator!
▷
Observe the manufacturer's product literature (see name plate or operating
manual of the accumulator).
The accumulator’s pre-charge pressure (p) must be lower than the set start-up
pressure (p
E
) of the pressure booster system.
The best storage volumes are achieved with the following settings (mean value):
▪
Value 0.9 at start-up pressure > 3 bar
▪ Value 0.8 at start-up pressure < 3 bar
Example 1 p
E
= 5 bar
5 bar × 0.9 = 4.5 bar
With a start-up pressure of 5 bar the pre-charge pressure of the accumulator must be
4.5 bar.
Example 2 p
E
= 2 bar
2 bar × 0.8 = 1.6 bar
With a start-up pressure of 2 bar the pre-charge pressure of the accumulator must be
1.6 bar.
Checking the pre-charge pressure
1. Close the shut-off elements fitted underneath the membrane-type accumulator.
2. Drain the membrane-type accumulator via the drain valve.
3. Remove and store the protective cap of the membrane-type accumulator valve.
4. Check the pre-charge pressure using suitable equipment (e.g. tyre pressure
gauge).
5. Fit the protective cap of the membrane-type accumulator valve.
Filling the membrane-type accumulator
1. Remove and store the protective cap of the membrane-type accumulator valve.
2. Add nitrogen through the valve.
3. Fit the protective cap of the membrane-type accumulator valve.