Sierra Monitor Corporation 3100-01 manual Auxiliary Relay, 6 4-20 mA Connections

Instruction Manual

3.3.5Auxiliary Relay

The Auxiliary Relay connector is located be- tween the Power and Fire Relay connectors. The connection points are labeled “Aux In” and “Aux Out”. The Aux. Relay is config- ured for Normally Open (3100-03 and 3100- 04), or Normally Closed (3100-02 and 3100- 05) operation at the factory.

3.3.64-20 mA Connections

The 4-20 mA connections are connected at the J2 connections The positive side of the 4-20 mA circuit is connected to Pin 7 and negative side to Pin 6.

3.4Testing

The Model 3100 Flame Detector uses ongoing self- test functions which will indicate a fault if any of the functions fail to pass. If an end to end test is required, a 1 sq. ft. pan with 1 inch of water and 1/ 8 inch of kerosene set at the max. distance set by the sensitivity settings may also be used. The detec- tor should alarm within 5 seconds of ignition of the fire.

The Model 3140 Flame Tester is also available. It simulates a UV/IR flame signature by emitting a steady state UV signal and modulated IR signal at a flicker frequency of 5 to 10 Hs.

NOTE: Because of the danger involved with fire testing all safety precautions must be observed.

4.0MAINTENANCE

The self-test functions eliminate the need for most regular maintenance procedures. If a detector indi- cates a fault, use the troubleshooting section of this document to correct the fault. Contact the local “authority having jurisdiction” or consult the local codes for any maintenance they may require for the type of system installed.

4.1Lens Cleaning

The most common fault is a Lens Test Fault. Regu- lar cleaning of the Lens will eliminate this type of fault. The frequency will depend on the cleanliness of the area where the detector is installed and how the detector is mounted. A detector which is pointed down should require less cleaning than one that is pointed up. An area which has lots of oil particu- lates or dust will require more frequent cleaning than one that is oil and dust free. The frequency of the Lens Test Fault will indicate how often cleaning is necessary. If the device is failing the “Lens test” to often it may be necessary to install a dust shroud, realign the detector, or change the detectors mount- ing location.

To clean the lens: Wipe the lens surface and grill with a clean lint free cloth. If more extensive clean- ing is required use denatured or Isopropyl alcohol and a clean lint free cloth. Do not use any silica based solvents. (Most common glass cleaners are silica based and should not be used to clean the lens.)

Page: 8 Model 3100 Series Flame Detector (11/04)