Chapter 4 – General Configuration
Firmware Version 3/4.31.37
This alarm indicates that MultiLoad II has detected that an injection failure has taken place. If
a piston injector is used, the alarm indicates that a number of injections have been missed.
The quantity of missed injections is specified by the parameter Max Pstn Missed Inj. Other
failures that could cause this alarm are a stuck piston, solenoid/spool valve failures, clogged
filters and injectors. Additionally, an improperly adjusted or broken piston position reed
switch may be the source of the failure. In some cases, it may be necessary to increase the
Max Piston Throw Time parameter when very low additive pressure exists. If the additive is
very viscous or if a large volume injector is used it may be necessary to increase the Piston
Throw Time. This will allow the injector more time to complete an injection cycle.
If the additive metering method is used, this alarm indicates that additive injection target
volume has not been reached within the period specified by the Max Solenoid Injection Time.
In most cases this will indicate that an additive valve is closed or the additive pump is not
starting. Other failures that could cause this alarm are solenoid failures, clogged filters, and
malfunctioning meter pick-off or pre-amplifier. In some cases it may be necessary to
increase the Max Solenoid Injection Time when front-loading, or when injecting large
quantities of additive prior to a line flush. This will allow the injector more time to complete an
injection cycle.
Unauthorized Flow-This alarm occurs when a volume of additive passes the meter and the
additive is not authorized for delivery. The volume of flow that will trigger the alarm is
specified in the Unauthorized Flow Alarm Volume parameter.
No Line Flush - This alarm occurs if the load is aborted and the Minimum Line Flush did not
have the opportunity to occur.
This alarm indicates that volume has passed the meter or piston when it was not commanded
to inject. It may be an indication of a small leak or it may indicate that erroneous flow signals
have been noted by the system. The amount of volume that triggers the alarm is configured
in the Meter Creep Alarm Volume parameter. Also consider the parameter Creep Reset
Time.
Block Valve alarm. This alarm activates when an additive block valve has not opened in the
time required by the Block Valve Open Alarm Time parameter. This alarm will also occur if
the block valve has not closed in the time required by the Block Valve Close Alarm Time
parameter. Any time a block valve is in the improper position, the alarm will activate.
Future additive level alarm assignments.
4.11.6 SAMPLER ALARM SETUP
The MultiLoad II has lost communication with the I/O board or FCM. This message indicates
that sampler level functions are affected by the interrupted communication. This alarm will
automatically clear when communications are restored. Check the Diagnostic menu under
FCM Com to determine if the I/O board or FCM is communicating.
Sampler Permissive. Permissives can be set to affect specific sampler in multi-sampler load
arms. When the Sampler Permissive signal is lost, loading will stop on the load arm if the
sampler is being used. The alarm will auto clear when the signal returns. The alarm
message that appears to the operator is configured via the MultiLoad Configuration Tool, at
Sampler Alarms, Alarm 1.
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