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3.2 Programmable Alarms
There are ten (10) programmable alarms. These alarms may be programmed either Enabled or Disabled, as
the user requires. When programmed Enabled, it is recommended the Permissive Output be used to
terminate product loading.
3.21 Additive Flow Problem (Low Flow)
Problem:
During certain conditions, the flow of additive may be insufficient to complete normal
injections. Conditions may include a closed ball valve in the additive line, insufficient additive pump
pressure, high additive viscosity, or foreign contaminates in the additive line restricting additive flow.
Cause:
The alarm activates under the following conditions:
1.
Conditions whereby additive flow is occurring, but at a reduced flow rate. It is likely a second
injection request may be received by the ProPAC-3 microprocessor, while the injector is attempting to
complete a previous injection request. If the injector is unable to complete three (3) consecutive injection
requests, the alarm will activate. However, the injector will continue to attempt to inject additive, provided
the ProPAC-3 can complete at least one injection within 30 seconds.
2.
When the solenoid is energized continuously for >30 seconds, thereby, attempting to complete
just one injection request, the injector will activate the Additive Flow Problem alarm. However, under this
condition, further injection attempts shall be prohibited.
Troubleshooting:
Check to make sure all valves in the additive system are fully open. Check the
additive pump pressure when several injectors are in use simultaneously.
3.22 No Additive Pulse (Additive Pulse Failure)
Problem:
Additive flow is determined by the ProPAC-3 microprocessor by counting additive pulse
counts as the flow meter gears rotate. The two gears in the flow meter are rotated by the additive flow
through the meter. Counting is accomplished via a Hall-Effect sensor. It is possible the additive flow meter
pulse counts from the Titan flow meter are not received by the microprocessor following an injection
request. This problem could cause the solenoid to remain energized (open) for an extended period of time in
an attempt to complete the injection request. The No Additive Pulse Alarm will provide an indication to
terminal personnel of the problem.
Cause:
The alarm activates whenever an injection request has been made (attempt to inject) and no
additive counts are counted by the microprocessor. In the event the microprocessor does not count additive
pulses from the Titan additive flow meter within 25 seconds of an injection request, the unit will alarm.
When the ProPAC-3 is in this alarmed state, further injection attempts are prohibited. The alarm will
activate under the following conditions:
1.
Failure of the additive pump/motor to be permitted ON when product pulses are sent to the
injector.
2.
Failure of the Hall-Effect sensor.
3.
Failure of the additive flow meter gears to turn freely.
4.
Loss of additive pump pressure.
5.
Closed ball valve.
6.
Check valve installed in the wrong direction.
7
. Solenoid failure.
Troubleshooting:
Check to make sure all valves in the additive system are fully open. Check the
additive pump pressure when several injectors are in use simultaneously. Open the test port and make a test
injection (have a bucket ready under the test port!!!) If additive pours through the injector without being
registered on the injector, either the Hall-effect sensor is bad or the meter gears are stuck. If no additive
flows through the injector, the solenoid has probably failed.
3.23 No Product Pulse
Problem:
The alarm is used to detect the loss or failure of the product pulse (typically 40:1 or 1:1),
which is provided to the additive injector. When injectors are installed and used in their simplest form, the
injector simply injects additive on receipt of product pulses. In order for the injector to function properly,
Summary of Contents for ProPAC-3
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