Pentair STA-RITE WP/MULTI EVO-A Handleiding pagina 20
Beschikbare talen
Beschikbare talen
EN
CHAPTER 5
OPERATION
CHECK OF EXPANSION TANK WITH MEMBRANE
DANGER
Risk of injury! An excessively high gas inlet pressure can cause damage to the expansion tank with membrane
The maximum admissible operating pressure is specified on the data plate of the tank and must never be exceeded. During the filling
process, check the gas inlet pressure.
To ensure optimal operation of the autoclave, the gas inlet pressure in the expansion tank with membrane must be proportionate to
the intervention pressure. The expansion tank has been pre-charged in the factory with air and set at a specific inlet pressure (see data
plate of the expansion tank).
Before commissioning and after making changes to the pressure switch settings, it is advisable to check the gas pressure again.
Disconnect the pump from the power supply and release the pressure from the expansion tank on the water side, by opening a user.
Unscrew the cover of valve 1 (Fig.A) and, using a pressure gauge, check the gas pressure on the diaphragm expansion tank gas filling
valve.
The gas pressure value must corresponds to approximately the pump intervention pressure minus 10 %. If the gas inlet pressure is too
low, add air. If the gas pressure value is too high, discharge air via the valve.
FIg. A
1
PUMP PRIMING
DANGER
The pump must only be started up after it is filled with liquid.
DANGER
If the pump has not been used for a prolonged period, the filling operation should be repeated before starting up.
Pump installation below the liquid level (negative suction head) Figure 1
1. Close the shutoff valve downline of
the pump (delivery side).
2. Open the shutoff valve upline of the
pump (suction side).
DANGER
The pump must never be operated with the shutoff valve on the delivery side closed. The discharge valve must be opened as
soon as the pump has been started up, to prevent damage to the latter by an excessive increase in liquid temperature.
Installation of self-priming pumps above the liquid level (positive suction head) Figure 2, Figure 3 and "Installation" Tab1.
1. Ensure that the pipeline downline of
the pump is free (delivery side)
2. Open the shutoff valve downline of
the pump (delivery side).
3. Open the shutoff valve upline of
the pump (suction side). refer to
installation Figure 2.
4. Open the valve near the pump to
bleed the air.
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3. Loosen the filler cap to enable release
of the air, then fill the pump body and
suction line completely with liquid,
until it overflows from the hole.
4. Tighten the filler cap fully down.
5. Remove the filler cap.
6. Using a funnel, fill the pump body and
suction pipe (Figure 2), or only the
pump body (Figure 3) completely with
liquid, until it overflows from the hole.
7. Close the pump filler cap.
8. If the filler hose is on the pipeline,
continue to fill the pipe and pump
until water overflows also from this
second hole.
5. Start up the pump and slowly
open the shutoff valve downline
(delivery side) to ensure bleeding
of any residual air in the pump body
and accumulated pressure during
startup.
9. Insert the second filler cap.
10. Start up the pump and wait for the
liquid to be pumped. The pump
can run for 5 minutes to attempt to
activate liquid suction. If the pump
does not generate pressure and flow
rate, repeat steps 1 to 10.
