Make sure that you have the replacement spare part available.
Follow this instruction when replacing
the cables of HMP155 and LM21.
-
Switch off both AC (mains) power switch and battery switch.
Make sure that there is no AC (mains)
power available for the system.
- 1
- Battery switch
- 2
- AC (mains) power switch
-
Disconnect the cable from the connector on the sensor.
-
If the cable is attached with cable ties to the mast and/or sensor support arm, remove
the cable ties.
-
In the interface unit, loosen the cable from the cable gland.
-
Disconnect the wires from the connector and remove the cable.
- 1
- HMP155 wiring
- 2
- LM21 wiring
-
Route the replacement cable through the cable gland.
-
Connect the wires of the replacement cable in the connectors.
| The board includes markings to indicate how to connect the wires. |
HMP155 wiring
| Wire Color |
Description |
| Red |
GND |
| Blue |
Vin+ |
| − |
VH+(F1) |
| − |
VH−(F1) |
| Brown |
COM3A− |
| Pink |
COM3B+ |
LM21 wiring
| Wire color |
Description |
| Gray |
GND |
| Pink |
Vin+ |
| White |
VH+(F2) |
| Brown |
VH−(F2) |
| Yellow |
COM3A− |
| Green |
COM3B+ |
| − |
D/N |
| − |
GND |
-
Route the cable from the interface unit to the sensor, attaching the cable with cable
ties to the mast and/or sensor support arm.
-
Power up the system.
-
Verify operation.