60
the type of alarm (see Table 6), if we have several alarms at the same time, the yellow LED indicates the alarm with higher priority,
the priority sequence is defined on table as follows:
Display Priority Alarm Action
yellow
1
Rotor is blocked
Wait or deblock the
shaft
LED 1 red + LED 4
yellow
2
Supply voltage
too low
Control the supply
voltage
LED 1 red + LED 3
yellow
3
Electrical error
Control the supply
voltage or replace
the pump
Table 7 - Alarms
21.2. Pump Wilo 15-130/7-50
The Wilo 15-130/7 50 circulator pump consists of:
1. Pump housing with screwed connections
2. Glandless motor
3. Condensate drain openings (4x around circumference)
4. Housing screws
5. Control module
6. Rating plate
7. Operating button for pump adjustment
8. Run signal/fault signal LED
9. Display of selected control mode
10. Display of selected characteristic curve (I, II or III)
Figure 60 - Pump Wilo
Installing the pump
Observe the following points when installing the pump (Figure 61):
- Note the direction arrow on the pump housing (1).
- Install glandless motor (2) horizontally, without mechanical tension.
- Place gaskets in the screwed connections.
- Screw on threaded pipe unions.
- Use an open-end wrench to secure the pump against twisting and screw tightly to piping.
- Re-mount the thermal insulation shell if required.
Figure 61 – Installing the pump
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