AmeriWater SCALA2 Manual

3345 Stop 8 Rd, Dayton, OH 45414 | 800 535 5585 | www.ameriwater.com 98-2039 Rev A
Manufactured With Pride in the USA
Operation & Maintenance Manual
SCALA2 Booster Pump

TABLE OF CONTENTS SCALA2 BOOSTER PUMP
1 98-2039 Rev A
TABLE OF CONTENTS
TABLE OF CONTENTS................................................................................................................. 1
1PUMP SPECIFICATIONS...................................................................................................... 2
1.1 Theory of Operation .............................................................................................................2
1.2 Models.................................................................................................................................2
1.3 Technical Specifications ........................................................................................................2
1.4 Electrical Safety and Supply Requirements .............................................................................2
2COMPONENT IDENTIFICATION .......................................................................................... 3
2.1 Connections .........................................................................................................................3
2.2 REPLACEMENT PARTS ..........................................................................................................3
3INSTALLATION & START-UP............................................................................................... 4
4PUMP CONTROLS ................................................................................................................ 5
4.1.1 Grundfos® Eye ................................................................................................................6
4.1.2 Pressure Indicator ............................................................................................................7
4.2 Expert Settings.....................................................................................................................7
4.2.1 Resetting to Factory Settings.............................................................................................8
5FAULT FINDING .................................................................................................................. 9
5.1 Fault Finding Chart for Grundfos® SCALA2 Pump...................................................................9
5.2 Alarms and Events..............................................................................................................10
6MAINTENANCE.................................................................................................................. 11
CALIFORNIA PROPOSITION 65 .............................................................................................. 12

PUMP SPECIFICATIONS SCALA2 BOOSTER PUMP
2 98-2039 Rev A
1PUMP SPECIFICATIONS
1.1 Theory of Operation
The SCALA2 pump is a compact, self-priming water supply system with integrated speed control to allow
the pump performance to increase with increasing demand. The pump starts automatically when water is
used and stops when it is not. The pump pressurizes feed water to the water system components. A
pressure regulator maintains an inlet pressure of less than 40 PSI.
NOTE: Please read the Operation Manual before operating or servicing the system. Contact
AmeriWater Customer Service with any questions at 1-800-535-5585 Monday through Friday 8:00 a.m. to
5:00 p.m. eastern standard time. For after-hours emergencies follow the instructions on the recorded
message. Our on-call technician will return your call as soon as possible. This Operation Manual should
be kept near the system and used as a reference and troubleshooting guide.
1.2 Models
Models
Description
0080701
PUMP, BOOSTER SCALA,SINGLE 1HP,110V
0080702
PUMP, BOOSTER SCALA,SINGLE 1HP,220V
1.3 Technical Specifications
Models
Height
(ins)
Width (ins)
Depth (ins)
0080701
15
25 ¼
9.5
0080702
15
25 ¼
9.5
Item
Specification
Water temperature range
32 °F to 113 °F
Ambient temperature range
32 °F to 113 °F
Storage temperature range
-40 °F to 140 °F
Max operating pressure
145 psi
Max flowrate
20 GPM
Operating noise level
< 53 dB(A)
1.4 Electrical Safety and Supply Requirements
Component
Electrical Supply
0080701
(1) 115 V, 60 Hz, 4.9 A, Single phase
0080702
(1) 208-230 V, 60 Hz, 2.8 A, Single phase
Risk of electric shock: This pump is supplied with a grounding conductor and grounding type attachment
plug. To reduce the risk of electric shock, be certain that it is connected only to a properly grounded
electrical circuit equipped with a ground fault interrupter device. The operating voltage and frequency are
marked on the nameplate. Make sure that the motor is suitable for the electricity supply on which it will
be used.

COMPONENT IDENTIFICATION SCALA2 BOOSTER PUMP
3 98-2039 Rev A
2COMPONENT IDENTIFICATION
The pressure regulator is designed to reduce incoming water pressure. This regulator has a built-in
thermal expansion bypass feature. This feature prevents downstream pressure from rising to more than
10 psi above the supply pressure.
The pressure regulator has been factory preset to 40 psi.
“DO NOT ADJUST PRESSURE”. Failure to comply using a higher pressure will result in damage to the
pump.
2.1 Connections
Models
Inlet Connection
Outlet Connection
0080701
1 ¼” Hose Barb
1” Hose Barb
0080702
1 ¼” Hose Barb
1” Hose Barb
2.2 REPLACEMENT PARTS

INSTALLATION & START-UP SCALA2 BOOSTER PUMP
4 98-2039 Rev A
3INSTALLATION & START-UP
WARNING: The installation and operation should be in accordance with local regulations and accepted
codes of good practice.
1. Always mount the pump on the base plate with horizontal suction and discharge ports.
2. Place the pump system on solid, level foundation and secure with screws through the holes in the
base plate. Do not start the pump until it has been filled with water.
3. Unscrew the priming plug and pour minimum 0.5 gallons of water into the pump housing.
4. Screw the priming plug on again.
CAUTION: Always tighten priming and drain plugs by hand.
5. Connect the 1 ¼” hose barb (inlet) to a water source and the 1” hose barb (outlet) to the water
system with a hose and hose clamps.
6. Open a tap or sample port to prepare the pump for venting.
7. Connect the mains supply cable of the pump to the electricity supply. When the cable is
connected, the Grundfos Eye should illuminate and the pump will start.
8. When water flows without air, close the tap or sample port.
9. Open the highest tapping point in the installation.
10. Adjust the pressure setpoint to the required pressure by means of the UP/DOWN buttons.
11. Close the tapping point. Startup has been completed

PUMP CONTROLS SCALA2 BOOSTER PUMP
5 98-2039 Rev A
4PUMP CONTROLS
The SCALA2 pump has an intelligent controller with the following integrated features: speed-controlled
drive, tank, sensors, and non-return valves.
To prevent motor burnout, the SCALA2 pump will stop automatically under the following conditions:
running dry, water shortage, excessive temperature, or blocked pump. The pump has an automatic reset
function, allowing the pump to attempt to restart in five-minute intervals up to 8 times after an alarm
occurs, then every 24 hours after that.
Figure 1 –Operating Panel
Symbol
Description
Grundfos Eye
This shows the operating status of the pump. See Section
4.1.1 for more information.
ON / OFF button
This makes the pump ready for operation or starts and
stops the pump.
UP / DOWN button
Buttons used to increase or decrease the outlet pressure.
RESET button
Button used to reset alarms.
Pressure indicator
Indicates the required outlet pressure. See Section 4.1.2 for
more information.
Stop indicator
Indicates that the pump has been stopped manually.
Lock indicator
Indicates that the operating panel is locked.
Indicator 1
Power supply failure.

PUMP CONTROLS SCALA2 BOOSTER PUMP
6 98-2039 Rev A
Indicator 2
The pump is blocked, for instance the shaft seal has seized
up.
Indicator 3
Leakage in the system.
Indicator 4
Dry running or water shortage. Pump must be reset
manually.
Indicator 5
The maximum pressure has been exceeded or the setpoint
cannot be reached.
Indicator 6
The maximum runtime has been exceeded.
Indicator 7
The temperature is outside the range.
4.1.1 Grundfos® Eye
The operating condition of the pump is indicated by the Grundfos® Eye. See Figure 2 for a list of
possible indications the pump.
Figure 2 - Grundfos® Eye Indicators

PUMP CONTROLS SCALA2 BOOSTER PUMP
7 98-2039 Rev A
4.1.2 Pressure Indicator
The pressure indicator shows the required outlet pressure of the pump.
4.2 Expert Settings
The expert setting menu allows the installer to toggle between the following functions: self-learning, auto
reset, anti cycling, and maximum continuous operating time.
To view or modify the Expert settings, proceed as follows:
1. Hold down the RESET button for 5 seconds.
2. Indicator 1 will start flashing to indicate that the expert settings are active.
The pressure indicator now acts as the expert menu. A flashing green diode is the cursor. Move the
cursor using the UP/DOWN buttons, and toggle the selection on or off using the RESET button. The diode
for each setting will light up when the setting is active.

PUMP CONTROLS SCALA2 BOOSTER PUMP
8 98-2039 Rev A
Function
Default
Description
Self-learning
On
On
If the pump cannot reach the user-defined pressure setpoint, the self-
learning function will automatically adjust the setpoint. The pump will
lower the setpoint to either 65, 51, or 36 psi.
The self-learned setpoint is indicated on the operating panel by one
flashing green light.
After every 24 hours, the pump will automatically attempt to revert to
the original user-defined setpoint. If this is not possible, the pump will
again return to the self-learned setpoint. The pump will continue to
operate with the self-learning setpoint, until the user-defined setpoint
can be reached.
Off
If you set the self-learning function to off and the pump is unable to
reach the desired setpoint, the pump will show alarm 5.
Auto reset
On
On
This function allows the pump to automatically check if the operating
conditions are back to normal. If the operating conditions are back to
normal, the alarm indication will be reset automatically.
Off
All alarms must be reset manually by means of the RESET button.
Anti cycling
Off
This function monitors the starts and stops of the pump.
Off
If the pump starts 40 times in a fixed pattern, there will be an alarm.
The pump will remain in operation as normal.
On
If the pump starts and stops in a fixed pattern, there is a leakage in the
system, and the pump will stop and show alarm 3.
Maximum
continuous
operating time
Off
This function is a timer that can turn off the pump if it runs continuously
for 30 minutes.
Off
If the pump exceeds the running time of 30 minutes, the pump will run
depending on the flow.
On
If the pump exceeds the running time of 30 minutes, the pump will stop
after 30 minutes of continuous operation, and it will show alarm 6. This
alarm will always need to be reset manually.
4.2.1 Resetting to Factory Settings
The pump can be reset to factory setting by pressing and holding the DOWN and RESET buttons
simultaneously for 5 seconds.

FAULT FINDING SCALA2 BOOSTER PUMP
9 98-2039 Rev A
5FAULT FINDING
CAUTION: This section provides general details for diagnosing possible faults that may occur
during normal operation. Some of the remedial actions can only be carried out by qualified
personnel. Do not attempt to carry out any action if it involves inspecting / replacing an
electrical / mechanical component without first contacting AmeriWater for advice. Please be
aware that the unit / system may still be under pressure and contain water at scalding
temperature under certain fault conditions. When investigating any alarm, take appropriate
precautions to prevent possible injury. NEVER attempt to dismantle the unit under these
conditions. Always contact AmeriWater for advice.
5.1 Fault Finding Chart for Grundfos® SCALA2 Pump
Fault
Grundfos
Eye
Indicator
Light
Automatic
Reset
Cause
Remedy
The pump is not
running.
-
-
Power supply failure.
Switch on the power supply.
Check the cables and cable connections
for defects and loose connections and
check for blown fuses in the electrical
installation.
Yes
The power supply is out of
prescribed voltage range.
Check the power supply and the pump
nameplate. Reestablish the power supply
within the prescribed voltage range.
No
The shaft seal has seized up or the
pump is blocked by impurities
The end cover incorporates a plug which
can be removed by means of a suitable
tool. This makes it possible to deblock the
pump shaft if it has seized up as a result
of inactivity.
Yes
Dry running.
Check the water source, and prime the
pump.
No
The maximum runtime has been
exceeded.
Check the installation for leakage and
reset the alarm.
No
The internal non-return valve is
defective or blocked in completely or
partly open position.
Clean, repair or replace the non-return
valve.
The pump is
running.
-
1. Leakage from the pipe system, or
the non-return valve is not properly
closed due to impurities.
2. Small continuous consumption.
1. Check and repair the pipe system, or
clean, repair or replace the non-return
valve.
2. Check the taps and reconsider the
usage pattern (ice machines, water
evaporators for air-conditioning, etc.).
-
The temperature of the pump and
water is below 37 °F.
Consider protecting the pump and the
installation against frost.
The pump
performance is
insufficient.
-
-
1. The pump inlet pressure is too
low.
2. The pump is undersized.
3. The inlet pipe, the inlet strainer or
the pump is partly blocked by
impurities.
4. There is a leakage in the inlet
pipe.
1. Check the inlet conditions of the pump.
2. Replace the pump with a bigger pump.
3. Clean the inlet pipe or the pump.
4. Repair the inlet pipe.
5. Prime the inlet pipe and the pump.
Check the inlet conditions of the pump.
6. Increase the pressure setting (arrow
up).

FAULT FINDING SCALA2 BOOSTER PUMP
10 98-2039 Rev A
5. There is air in the inlet pipe or the
pump.
6. The required outlet pressure is
too low for the installation.
Yes
The maximum temperature has
been exceeded and the pump is
running at reduced performance.
Check the cooling conditions. Protect the
pump against direct sunlight or any
nearby heat sources.
System
overpressure.
Yes
1. The setpoint is set too high. The
difference between the outlet
pressure and the inlet pressure must
not exceed 51 psi.
2. The maximum pressure has been
exceeded, the inlet pressure is
higher than 87 psi.
3. The maximum pressure has been
exceeded. Equipment elsewhere in
the system causes a high pressure
at the pump, for example water
heater or defective safety
equipment.
1. Reduce the pressure to a new setpoint
(maximum 51 psi + positive
inlet pressure).
2. Check the inlet conditions.
3. Check the installation.
You can reset the
pump, but it runs
only for a few
seconds.
Yes
1. Dry running or water shortage.
2. The inlet pipe is blocked by
impurities.
3. The foot or non-return valve is
blocked in closed position.
4. There is a leakage in the inlet
pipe.
5. Air in the inlet pipe or the pump.
1. Check the water source, and prime the
pump.
2. Clean the inlet pipe.
3. Clean, repair or replace the foot or
non-return valve.
4. Repair the inlet pipe.
5. Prime the inlet pipe and the pump.
Check the inlet conditions of the pump.
You can reset the
pump, but it starts
repeatedly,
immediately after
stopping.
No
1. The internal non-return valve is
defective or blocked in completely or
partly open position.
2. The tank precharge pressure is
not correct.
1. Clean, repair or replace the non-return
valve.
2. Adjust the tank precharge pressure to
70% of the required outlet pressure.
5.2 Alarms and Events
If the pump does not start when the fault has been corrected, or if the fault cannot be corrected, contact
AmeriWater or Grundfos for further information.

MAINTENANCE SCALA2 BOOSTER PUMP
11 98-2039 Rev A
6MAINTENANCE
It is recommended to periodically check and clean the non-return valves and to keep the SCALA2 pump
clean, including keeping the ventilation holes free of dust.
The pump has a debris filter to protect the pump. The filter is placed on the bottom and can easily be
removed and cleaned with a stiff brush. Clean the debris filter once a year or as needed.
To remove the inlet or outlet non-return valve, follow the steps below:
1. Turn off the power supply and disconnect the power plug.
2. Shut off the water source.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually open and remove the priming plug.
6. Remove the drain plug and drain the pump.
7. Unscrew the union nut holding the inlet connection. Depending on
the installation type, it may be necessary to remove the pipes from
both the inlet and outlet connections.
8. Pull out the inlet connection.
9. Pull out the inlet and outlet non-return valve.
10. Clean the non-return valve with warm water and a soft brush.
11. Assemble the components in reverse order.
TAKING PUMP OUT OF OPERATION
If the pump is taken out of operation for a period of time, for
example during the winter, it must be disconnected from the power
supply and placed in a dry location. Proceed as follows:
1. Stop the pump by means of the on/off button.
2. Disconnect the power supply.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually loosen the priming plug to release the pressure in the
pump.
6. Remove the drain plug to drain the pump.
7. It is recommend to store the pump indoors in a dry location. Due
to humidity, the disconnected pump must not be left outside for a
longer period of time.
START-UP AFTER A LONG TIME OF INACTIVITY
If the pump has been drained, it must be filled with liquid before
start-up. See section 3 for start-up instructions.

CALIFORNIA PROPOSITION 65 SCALA2 BOOSTER PUMP
12 98-2039 Rev A
CALIFORNIA PROPOSITION 65
WARNING
This product can expose you to chemicals such as vinyl chloride (used in the production of PVC) or Nickel
(used in the production of stainless steel), that are known to the State of California to cause cancer. For
more information go to www.P65Warnings.ca.gov.
Dear Valued Customer,
California Proposition 65 (Prop 65) is the Safe Water and Toxic Enforcement Act of 1986. The State of
California began enforcing amendments to California Prop 65 at the end of August 2018. Prop 65 requires
manufacturers to provide a clear and reasonable warning to residents of California about chemicals used
in products that they purchase that are included on the Prop 65 Chemical List. The chemicals included on
the list are chemicals that are known to the State of California to cause cancer, birth defects, or other
reproductive harm. One such chemical is Vinyl Chloride, a compound used to produce Polyvinyl Chloride
(PVC). The AmeriWater system you have purchased may contain PVC or stainless steel parts.
While warnings are only required in the State of California, AmeriWater has initiated the use of Prop 65
labeling for all products to ensure compliance with California regulations. Please note that the above
warning does not necessarily mean that the product that you have purchased is unsafe. Products that
have been cleared for market by FDA have been determined to be safe and effective by the United States
Food and Drug Administration. The warning is simply a requirement by the State of California. If you wish
to obtain additional information, please visit: p65warnings.ca.gov. You may also contact your AmeriWater
representative if you have any questions.
Thank you for your understanding and we look forward to continuing to serve you.