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g.
Cover the affected fan with the fan cover that is included with the unit inside the lower section.
h.
Turn the unit ON by following the start-up procedure:
All Fan Communication Loss
1.
If the signal is restored within 60 seconds:
a.
The unit will operate as normal, and no alarm signal will be enabled.
2.
If the signal is not restored within 60 seconds:
a.
All fans will rotate at the emergency speed.
b.
An alarm light on the control panel will turn on and an alarm signal will be enabled.
3.
To troubleshoot:
a.
Ensure that all fans have power and that the communication signal is restored.
b.
Turn on the override switch on the control panel, and an amber light will turn on.
c.
All fans will start to operate based on the control signal.
4.
To turn off the override light, the unit must be restarted with a valid control signal present.
Power Outage
Single Fan Power Outage
1.
If power is restored within 60 seconds and an uninterrupted control signal is maintained to all fans:
a.
The remaining fans will rotate based on the control signal except the affected fan.
b.
After power is restored, the affected fan will resume operation based on the control signal.
c.
No alarm signal will be enabled.
2.
If power is out for more than 60 seconds:
a.
An alarm light on the control panel will turn ON and an alarm signal will be enabled.
b.
The remaining fans will rotate at emergency speed.
3.
Troubleshooting the Issue:
a.
Shut down the unit completely, including the spray pump and fans.
b.
Follow all safety procedures before entering the equipment.
c.
Cover the affected fan that is not operating with the fan cover, provided by BAC.
d.
Turn on the unit by following the start-up procedure:
Vertex™ Evaporative Condenser Operation & Maintenance Manual – Fan Control
i. The unit will go into emergency mode. An alarm light on the control panel will turn ON and an
alarm signal will be enabled.
ii. Turn the override switch on the control panel ON, and an amber light on the control panel will
also turn ON.
iii. All fans except the affected fan will start to rotate based on the control signal.
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