7.2 Temperature sensor display
The LED is located on the temperature sensor beneath the lid. You
must remove the lid in order to pair the temperature sensor with the
pump.
Status Explanation
Flashing blue
The LED flashes blue when the temperature
sensor is ready for pairing with the pump.
Blue
The LED lights blue for 5 seconds when
pairing between the temperature sensor
and the pump has succeeded.
Flashing red
The LED flashes red for 5 seconds when
pairing between the temperature sensor
and the pump has failed. Restart of the
installation procedure is recommended.
7.3 Performance curve
The pump runs at constant speed and consequently on a constant
curve. The pump is set on the maximum curve under all operating
conditions.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Q [US GPM]
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
[ft]
H
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
[m]
H
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Q [m³/h]
ALPHA 15-55 HWR-T
60 Hz
Without check valve installed
With check valve installed
TM077509
Performance curve, ALPHA 15-55 HWR-T
8. Servicing the product
8.1 Product maintenance
The ALPHA HWR-T pump is maintenance-free.
If the pump is damaged, for example with fractures or dents,
replace the pump.
8.1.1 Battery replacement
WARNING
Biological hazard
Death or serious personal injury
‐ Keep batteries out of reach of small children, the
elderly, and pets. Batteries can cause permanent injury
if ingested or placed in the nose, mouth, or ears.
‐ Immediate emergency room treatment is required for
anyone who ingests a battery. In addition, in the US,
consult the 24-hour National Battery Ingestion Hotline
at 800-498-8666 for assistance.
CAUTION
Corrosive substance
Moderate to minor personal injury and risk of property
damage
‐ The temperature sensor must be replaced if battery
leakage occurs.
CAUTION
Flammable material
Minor or moderate personal injury
‐ Do not attempt to recharge non-rechargeable batteries.
To clean the temperature sensor, wipe it with a clean,
damp cloth.
Ensure that disposal of old batteries is in accordance with local
regulations. Recycle old batteries where possible.
8.1.1.1
Replacing battery for temperature sensor
The temperature sensor uses AA 3.6 V lithium-thionyl batteries. To
change the battery in the temperature sensor, follow steps below:
1. Remove the lid of the temperature sensor.
2. Remove the old battery.
3. Insert the new battery.
4. Replace the lid of the temperature sensor.
11
English (US)
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