Xylem A-100NE CHEMICAL PUMPS - Manual (Page 10)

6.2 MODE 0 - TFD and FVS system set-up
Mode 0 is used to program the TFD (Tube Failure Detection) system and
the FVS (Flow Verification System).
!
TFD (Tube Failure Detection) -
Tube Failure Detection System which is designed to stop the pump and
provide a contact closure output in the event the pump tube should rupture
and chemical enters the pump head. This patented system is capable of
detecting the presence of a large number of chemicals including Sodium
The A-100NE is equipped with a
A-100NE
Page 10
Chemical
Tubing failure
Hypochlorite (Chlorine), Hydrochloric
(muriatic) Acid, Sodium Hydroxide, and
many others. The system will not be
triggered by water (rain, condensation, etc.)
or silicone oil (roller and tubing lubricant).
If the system has detected chemical, the
pump tube must be replaced and the pump
head and roller assembly must be
thoroughly cleaned.
Confirm Chemical Detection - To determine if your chemical will be
detected by the system, remove the pump tube and roller assembly. Place a
small amount of the chemical in the bottom of the pump head - just enough
to cover the sensors. Turn on the pump. If the TFD system detects the
chemical, the pump will stop after a five second confirmation period and
the ALARM icon will light on the display. If the TFD system does not
detect the chemical, the pump will continue to run after the confirmation
period. Carefully clean the chemical out of the pump head being sure to
remove all traces of chemical from the sensor probes. Press the
RUN/STAND-BY button to clear the alarm condition and restart the pump.
Contact Closure Alarm Output - A contact closure output (relay) is
provided with the TFD system. The relay can be configured for normally
open (factory default) or normally closed operation by properly positioning
the connector plug on the circuit board (see page 7).
OPERATING
FLOW RANGE
(ml/min)
This Shroud is designed to weather proof this Peristaltic Pump. If the
pump is wall mounted the shroud is not necessary and will still be
considered weather proof.
Floor Mount
Weather proof Weather proof
Shroud
Wall Mount