Nederman L-PAK Series, Original Instruction Manual

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L-PAK 150/250 Advanced EN
16
hours after the closing time set in the weekly timer, see Section
6.2.2. Weekly
timer
.
To reset OTTmr so that the time is not extended, press the external standby
button longer than 2 seconds and then release.
OTTmr
T = 02:00h
Ta = 00:00
ESC OK
T=02:00h: Extra time before the unit goes into
Off mode. The default setting is 2 hours.
Ta=00:00: The elapsed time since the overtime
timer started.
6.4 Standard Cleaning process
The filter cleaning process is always activated after the pilot signal (PS) or
(PSIFC) has disappeared and DIR Time has elapsed. The filter cleaning valve
opens and the filter cleaning process generates three cleaning pulses. The unit
then goes into Idle mode.
6.5 Standard Pilot Signal (PS) input
Input 2, terminals 13 and 14 is for the standard pilot signal input were the
filter cleaning process can be activated by the filter cleaning sequence timer
and the manual cleaning button .
6.6 PSIFC (Pilot Signal Interlock Filter Cleaning)
Input 8, terminals 13 and 17 is a pilot signal input for the PSIFC filter cleaning
process. When this input is used, filter cleaning is not activated until this input
is deactivated. If this input is activated during a filter cleaning sequence, the
filter sequence stops immediately, and the unit establishes a vacuum.
6.7 Alarm output
Alarm output is ON or activated when:
•
The motor is overheated see section
5.3.2. Motor Protector Activated
,
•
The compressed air level is low see section
5.3.3. Low Pressure CAS
,
• Or the fan temperature is over 125°C see section
5.2.2. Fan Hi Temp
and
section
5.3.1. Alarm Fan Hi Temp
.
If the fan temperature is over 125°C but it has gone less than eight minutes,
the unit is still in Running mode and tries to cool the fan by opening the filter
cleaning valve. If the temperature becomes lower than 90°C within eight
minutes, Alarm output is deactivated.
But, if Alarm Fan Hi Temp, Motor Protector Activated or Low Pressure CAS are
activated, the unit goes into Stop Mode until the problem is corrected and the
alarm is reset by pressing OK.
The default setting for Alarm output is OFF.
6.8 Zero voltage detection (ZV-Detect)
The default setting for ZV-Detect is ON. When ZV-Detect is ON or activated,
and power is lost to the unit, for example if there is a power outage, the unit
must be restarted and put into Standby (ready) mode by pressing the Standby/
Running button.