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20 Instruction 3015-4256
Clearing the Stored PPM Log, Alarms & Faults Data
Up to 200 refrigerant gas ppm measurements, and 30 alarm and fault events are stored by the monitor.
To clear stored data, first display the data to be cleared by using the PPM Log, Alarms or Faults
function (Pages 15). Next, press and hold down the Right Arrow Keypad button, and then press the
ENTER button. A single, long tone should be heard when the data has been successfully cleared.
Entering Custom Refrigerant Calibration Values
In addition to the 24 refrigerant gases available for selection, a custom gas can be added by using the
CUST K1, K2 & K3 function. Before using this function, the user must contact the factory and provide
information about the gas to be monitored. The factory will then supply values for K1, K2, and K3, which
are the coefficients of a polynomial equation that represent the calibration curve of the custom gas.
From the Data Display screen, use the Keypad buttons to place the arrow (>) on the display next to the
CUST K1 function. Then press ENTER to display the CUSTOM CAL K^1 screen. Use the Keypad
buttons to enter the 1
st
coefficient value (K1) as received from the factory. Press ENTER to save this value
in memory.
Repeat the above procedure to enter the values for K2 and K3.
Select the custom gas for monitoring by using the GASTYPE function (Page 17) and selecting CUSTOM.
Reset to Factory Default Settings
IMPORTANT! Performing this function will wipe out all program parameters, alarms, faults, and ppm
log files.
Press and hold down switch SW3 inside the HGMSZ (Page 8). Cycle AC power OFF then ON. Listen for
beep and then release switch. If needed, reprogram the HGMSZ to the desired settings.
Factory Default Settings
Parameter Factory Default
4–20 mA Factor ........................ 0.016 mA/ppm
Bench Voltage........................... 4.200
Calibration Factor.................... 1.000
Evacuate Alarm........................ 500 ppm
Gas Type ................................... R-134a
Leak Alarm............................... 100 ppm
Log Interval .............................. 10 minutes
Silence Timeout........................ 300 seconds (5 minutes)
Spill Alarm................................ 300 ppm
Squelch...................................... 0 ppm
Zone Temperature.................... 25°C