Thermal Gas inc. 11285 Elkins Road Bldg. H-1  P.O. Box 803  Roswell, GA 30076 TEL (770) 667-3865 Haloguard and Haloguard IR Monitors FAX (770) 667-3857

To: Date: AT: FAX: From:

Subject: Haloguard Model S/N Message: Please provide the following information so that we may determine the solution to your problem. 1- Describe the problem:

RUN GAS ALARM ZERO Setup SPAN Jum pers J5 LCD AUD Brightness AdjustmPow er LED ent ENTER DOWN UP Offscale LED

Fault LED Alarm 2 LED

Test Alarm 1 LED Micro Button

Analog Trim Reset Button Pot 0-5 or 0-10 VDC Analog Output I C VOLT m A Jum per ANALOG

Sensor CMOS Connectio Trim n Figure 2 - Haloguard Controller Upper Circuit Board 2- Remove clear cover and faceplate. Refer to figure 2, record jumper settings. RUN GAS ALAR ZERO SPAN J5 AUD M ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF

Move jumper to ALARM position, record alarm 1 and alarm 2 values.______4／6／2018 1 0e2b1b289b6eabe463807238389efdc2.doc Thermal Gas inc. 11285 Elkins Road Bldg. H-1  P.O. Box 803  Roswell, GA 30076 TEL (770) 667-3865 Haloguard and Haloguard IR Monitors FAX (770) 667-3857

Move jumper to J5 position, record information displayed.______

3- Refer to Figure 3. Indicate where connections have been made ______

FAULT ALARM 1 ALARM 2 OFFSCALE

1 2 3 4 5 7 8 9 10 11 6 12

Figure 3 - Haloguard Controller Lower Circuit Board

Gas Type (R-11, R-12, R-123, R-134, etc.)

Fault Messages - Caution - Discontinuity - Low Battery - Low Temp - Re-Zero - Setup Mode Concentration 8 hr. TWA Concentration (ppm) (R-123)

Alarms Set up Messages - Alarm 1 GAS - SET GAS TYPE - Alarm 2 ALARM - SET ALARM 1 (ppm) - Fault SET ALARM 2 (ppm) - Latch ON ZERO - - OFF Scale SPAN - - Reset TEST MODE UNUSED MODE - REMOVE JUMPER Figure 4 - Haloguard Controller LCD Display Features 4- Refer to Figure 2. Advise status of all the LEDs :______5- Refer to Figure 4. Observe LCD and provide information displayed.______

6- Using Figure 2 as a guide, measure voltage between SIG and GND; also, between VDC and GND. Record values to the nearest millivolt (0.001V).

CHANNEL VDC & GND SIG & GND

4／6／2018 2 0e2b1b289b6eabe463807238389efdc2.doc