AmeriWater GRUNDFOS CHI, Operation & Maintenance Manual

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P/N 98-0115
3
3. Once the power source has been connected, check the rotation of the
pump. Turn the disconnect to the ON position. Jog each pump by
momentarily turning the pump power switch to the HAND position. A
second person may be needed to see which way the motor armature is
turning just before it coasts to a stop. If the rotation is backwards, switch
any two of the three non-ground pump wires on the motor contactor inside
the panel.
4. After rotation has been verified, turn the switches on the controller to
HAND. Allow water to flow to re-circulate through the loop and back in to
the storage tank for a few minutes. Water flow can be verified by
observing the flow meter on the return header of the storage tank. If this
is a dual pump system, place pump #1 into HAND mode to ensure that
there is adequate flow through the system at the holding tank flow meter.
Once verified, repeat this for pump #2.
5. Place the system into auto mode to verify that the low level cut off switch
operates correctly. For a dual pump system, this will need to be done for
each pump.
6. For the dual pump system only, the timer will need to be verified. This is
accomplished by setting the timer to its minimum value and ensuring that
the system is alternating between the pumps. See page 5 for details on
adjusting the set-point.
7. The inlet and outlet valves are provided to allow for isolation of each pump
if maintenance is needed. During operation, leave all of the inlet and
outlet valves open.
8. The rated flow for your distribution pump is 70 PSI. When performing a
start-up of your distribution pump that is connected to a central system
storage tank, adjust the pressure relief valve on the storage tank header
so that the pressure gage at the pump is no higher than 70 PSI. Refer to
the manual that was provided with your storage tank system for proper
adjustments. Pump curves have been provided on page 4.