Fault Signals; Resetting Fault Signals; Maintenance - Nederman E-PAK 150 DX Manual De Instrucciones

EN E-PAK 150 DX/300 DX/500 DX
9.3.2
9.3.3
10
40
Always switch the standby and reset switch on the control panel to position 0
when work is over for the day, even when the unit has automatic start and stop.

Fault signals

The control panel has two fault indicator alarms, a red fault indicator light
(bottom, right) and a yellow one (bottom, left), which will light up when a fault
occurs, see Figure 12.
The following standard faults will cause the red fault indicator light to light up:
• The motor overload relay has tripped.
• The fan thermal switch, see Figure 5, item 6, has tripped.
• The pressure switch, see Figure 5, item 8, above the control filter has
tripped.
• The explosion relief panel sensor has tripped.
In addition, connected accessories, such as an external alarm input or a CAS,
will also result in a red fault signal.
The yellow fault indicator light signals an increased pressure drop over the
control filter. The unit will continue to operate, but we strongly recommend
that the reason for the fault is investigated. See Chapter 12 Troubleshooting to
find the cause of the alarm. See Chapter 10 Maintenance for replacement of the
control filter.
NOTE!
Continuous operation with the yellow fault indicator light lit may
result in severely reduced performance and overheating of the side channel fan.

Resetting fault signals

If the red fault indicator light lights up, the cause of the fault is to be
investigated. See Chapter 12 Troubleshooting for instructions on how to
identify the cause of the problem and which actions to take.
To reset the control system, turn the standby and reset switch to position Reset.
Restart the unit by turning the standby and reset switch to position 1.
NOTE!
If the cause of the fault is not eliminated, the unit will immediately go
back to fault signal mode and stop.
The yellow fault indicator light will be reset automatically once the control
filter is replaced and the cause of the pressure drop over the control filter is
removed.

Maintenance

WARNING! Risk of personal injuries.
Use proper protective equipment when risking exposure to the dust.
WARNING! Risk of electric shock.
Work with electric equipment is to be carried out by a qualified electrician.
WARNING! Risk of electric shock.
Always disconnect the supply voltage with the maintenance switch before any
service, whether mechanical or electrical. Always lock the maintenance switch
in the off position.