AmeriWater MRO3, Operation & Maintenance Manual

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MRO 3 & 4 MANUAL
29
98-0140
Rev. F
AUTO RESET
If a pressure fault shut down occurs and the Auto Reset Setpoint is programmed to 0, the unit
will remain shut down until manually reset. If the Auto Reset Setpoint is programmed to a
value greater than 0, the unit will automatically clear the pressure fault and attempt to restart
after this delay times out.
ALARM SILENCE
When a shut down occurs that causes the audible alarm to sound, the alarm can be silenced
by pressing the Alarm Silence/Reset key once. The alarm will remain silenced for 3 minutes
[180 seconds (AAMI RD62 standard)] when the Alarm Silence Setpoint is programmed to the
factory default 3. If the Alarm Silence Setpoint is programmed to a value other than 3, the
alarm will resound after this delay times out. Pressing the Alarm Silence/Reset key will
silence the alarm and reset this delay.
PRETREAT
If the pretreat input becomes active (closes) and stays active for 2 seconds, the unit will shut
down in a pretreat lockout condition. PRETREAT will show on the display and the unit will
remain shut down as long as the pretreat input is active.
HIGH CONDUCTIVITY
If the Conductivity reading exceeds the limit programmed the Cond Limit Setpoint for the
delay programmed in the Cond Delay Setpoint, the alarm lamp will light and the HI COND
warning message will show on the display. This warning will clear when the Conductivity
drops below the Setpoint.
When the High Conductivity warning message is active, the MRO will divert the PRODUCT
WATER to drain (through the Reject hose), until the Product water conductivity goes back
into the acceptable quality range.
ALARM OUTPUT
The Expansion I/O relay 2 has been programmed to operate as an alarm relay. The relay will
energize whenever a warning or alarm condition occurs. The relay will remain energized as
long as the warning/alarm condition is active.