AmeriWater GRUNDFOS CHI Manual

P/N 98-0115
Rev. A
DISTRIBUTION PUMP SYSTEM
OPERATION & MAINTENANCE MANUAL
GRUNDFOS CHI PUMPS
Manufactured With Pride
In The USA
www.ameriwater.com • 800-535-5585
AmeriWater • 3345 Stop 8 Rd. • Dayton, OH 45414

P/N 98-0115
Rev. A

P/N 98-0115
Rev. A
TABLE OF CONTENTS
THEORY OF OPERATION…………………………………….….…1
INSTALLATION…………………………………………………….….2
START-UP……..…………………………………..………………..….2
PUMP GENERAL DATA……………………………………………..4
PUMP CURVES……...……………………………………………..…5
PUMP TECHNICAL DATA…………………………………………..6
PUMP CONNECTIONS……………………………………………….8
ADJUSTING THE TIMER (DUAL PUMPS ONLY)………….10
SPARE PARTS LISTING………………………………………..…11
DRAWINGS…………………………………………………………....12

P/N 98-0115 1
DISTRIBUTION PUMP
THEORY OF OPERATION
The AmeriWater distribution pump takes the water from the storage tank, pumps
it through the distribution loop to the points of use for dialysis and re-circulates
water back through the piping to the storage tank. This provides pressurized
water to each dialysis wall box in addition to re-circulating the water. Re-
circulating the water keeps it “fresh” by minimizing bacteria growth by the
constant movement of water.
When the water is at the minimum level (always controlled by the lowest float
switch on the storage tank), the distribution pump is not allowed to automatically
operate through the distribution controller. When the water level is below the
minimum level, the distribution pump will not operate in “AUTO”, but may be
operated in “HAND” (manual operation). The distribution pump should only be
placed in “HAND” to empty the storage tank. It should not be left unattended
during this process. Running the distribution pump for an extended period
without water will result with overheating and damage to the pump.
The distribution pumps are available as a single pump or a dual pump. All
distribution pumps are available in 115V and 220V single phase, 208V 3 phase,
230V 3 phase and 460V 3 phase. The distribution pumps have a capability of
running at rated volume up to 70 PSI.
The distribution pump controllers have either fuses or overloads to protect the
pumps and wiring from overload damage.
The controllers for the dual distribution pumps have an alternating feature that
will allow the pumps to alternate from #1 pump to #2 pump that is controlled by a
timer set at 5 hours.
WARNING: Both pumps need to be in auto mode for normal operation.
If one pump is taken down, ensure that the second pump is set to manual
mode. If this is not done, the controller will attempt to cycle between them.
The system should only be run in manual mode for the length of time it will
take to bring the second pump back on line.
Another AmeriWater standard feature for the dual distribution pump controller is
to have an overload sensor for each pump. If a pump has an overload condition,
the controller will automatically switch to the pump that does not have an
overload. This will prevent a possible water delivery shutdown during the dialysis
procedure. An indicator light is on the front panel of the controller to show which
pump has an overload failure.

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INSTALLATION
The following guidelines should be met at installation.
1. Customer is to provide properly sized wiring to the distribution pump
control enclosure.
2. Place the pump system on firm, level floor and anchor to the floor to
prevent movement from vibration or bumping.
3. Inlet piping and / or hoses from the storage tank to the pump system
should be equal to or greater in diameter than the inlet piping on the pump
system.
4. Outlet piping and / or hoses of the pump system should be equal to or
greater in diameter than the outlet piping on the pump system.
5. Locate the pump control on a wall as close to the pump system as
possible. When installing a distribution pump along with an AmeriWater
Central Water System, refer to the Plumbing and Instrumentation Diagram
(P&ID) for the best location and where connections are made.
6. Follow all local plumbing and electrical codes.
7. After guidelines have been met, connect the distribution pump wiring to
the motor contactor located in the control panel (refer to the control wiring
diagram provided in this manual and with the distribution pump control).
Connect the three phase or single phase power source to the Main
ON/OFF disconnect switch located inside the control panel.
START-UP
1. Open the inlet and outlet valves to the pump and allow the water in the
storage tank to “flood” the inlet of the distribution pump. If the storage
tank does not have water in it, fill it to above the lowest float switch before
attempting to use the pump.
2. Verify that the voltage on the pump matches what is indicated on the
overload of the motor starter.

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.

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GRUNDFOS Pump

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P/N 98-0115 8
Pump Connections

P/N 98-0115 9
Pump Connections

P/N 98-0115 10
Adjusting the Timer
With the power off and the system properly locked out, open the control panel. In the
middle of the box, you will see the OMRON timer as shown below. To adjust the
timer, simply insert a small screwdriver into the screw lower right hand face of the
timer. Rotating this will toggle between the time interval modes which are displayed
on the face of the timer.
Time
Interval
Adjustment
Screw
Once all validation of your set-up is complete, you must re-set the timer to 5 hours to
meet the AAMI standards.

P/N 98-0115 11
Spare Parts List
Part # Description
80-0128 Pump, 3/4HP, Single Phase,115/230V
80-0129 Pump, 1HP, Three Phase, 208-230/460V
80-0134 Pump, 3/4HP, Three Phase, 208-230/460V
80-0135 Pump, 1HP, Single Phase,115/230V
041-0033 Check Valve, Ball Spring Loaded
43530710 Stainless Steel Pressure Gauge 0-100psi
61670245 Contactor, AB, 9 AMP, 3 Pole, 120V Coil
61760226 Motor Contactor/Overload 12 AMP Maximum
63760186 Fuse 15A FNW
63760133 Fuse, 2A, 250V
64760225 Timer, 8-Pin, 120V
64760108 Base, Timer, 8-Pin
61-0002 Relay, 30 AMP, 300V, SPST, NO, 120V-Coil

P/N 98-0115 12
Single Distribution Single Phase Controller

P/N 98-0115 13
Single Distribution 115 & 220V
Single Phase Controller Schematic

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Single Distribution Three Phase Controller

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Single Distribution 208V & 230V
Three Phase Controller Schematic

P/N 98-0115 16
Single Distribution 460V Three Phase Controller Schematic

P/N 98-0115 17
Dual Distribution Single Phase Controller