Spark Monitor (Ac Current Transducer) - Aerco Benchmark BMK 750 User Manual

Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA
SECTION 4 – MAINTENANCE

4.12 SPARK MONITOR (AC CURRENT TRANSDUCER)

The spark monitor (P/N 61034)
transformer and igniter-injector. Wire# 140, connected to the ignition transformer (see Figure 4-
12), passes through the monitor's orifice. If an adequate AC current is not detected in the wire
during ignition, the unit automatically shuts down. The monitor's wires are connected to the
board's Spark Signal terminals (see Section 2.11.4 in the
Installation and Startup Guide Guide, OMM-0127 (GF-205-K) for details ).
Spark
Monitor
To I/O
Tab
Board
Figure 4-12: Spark Detector Sensor (AC Current Transducer) P/N 61034
If the spark monitor needs to be replaced, open the monitor's orifice by pulling on the tab at
the side, remove Wire# 140, disconnect the monitor's wires are from the I/O board, r e m o v e
the old monitor from its position, i n s t a l l a new monitor in its place, r o u t e wire# 140
through the new sensor orifice, and connect the wires to the I/O board's Spark Signal
terminals, red wire to the positive (+) terminal and black to negative (-).
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evaluates the strength of the current between the ignition
Wire 140
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
Benchmark 750 – 3000 Boiler
Ignition
Transformer
I/O
Wire 140
OMM-0128_0C
GF-206-K