Standard Test Gases; Bump Test Procedure - CGS Merlin 'S' Range Installation, Fonctionnement Et Entretien

Installation, Operation & Maintenance Manual
We recommend testing detectors every 12-18 months along with the regular fire test procedures and coincide with
the annual service message prompted on the detection system after each year of service/operation.
What do I need?
Contact your CGS representative for details of suitable bump testing kits and gases. Kits usually consist of a certified
gas cylinder or spray. We recommend only using CGS calibration gas kits to ensure correct flow rates meet CGS
technical requirements. A bump testing gas is usually a concentration mix that exceeds the highest alarm set point.

Standard Test Gases

All certified test gases supplied by CGS are classified as non-flammable and non-toxic, however, they do contain gas
under pressure and may explode if heated to extreme temperatures and cause asphyxiation in high concentrations.
See below for recommended gas concentrations for bump testing your detector.
Detector Type
CO - Carbon Monoxide
NG - Methane
LPG - Liquid Petroleum Gas
H - Hydrogen
O - Oxygen
2
CO – Carbon Dioxide
2

Bump Test Procedure

To increase reaction time, cover the escape vents at the top of the device.
For more help and advice on bump testing – contact us.
Always remove the regulator/valve from cylinder after use!
Always check cylinder pressure upon sealing valve – there may not be a sufficient amount of gas!
All CGS cylinders will re-seal upon removal of the regulator/valve!
Always give at least five (5) minutes between testing the same unit or until gas has fully dispersed!
Always consider safety and use equipment in accordance with Safety Data Sheets!
STEP 1
Activate Controller Service Mode – GDP2X & GDPX+
This will inhibit all alarms/outputs and signals for fifteen (15) minutes!
If you are testing all actuation of alarms/outputs and signals please proceed to Step 2!
Access service mode by pressing the CGS logo on the controller (home screen logo only).
•
The screen will display a service message prompt.
•
Press Yes. (Note: All alarm signals/outputs will be inhibited for fifteen (15) minutes.
•
Proceed to test gas detectors.
•
Upon completion – exit service mode by pressing the 'Exit' button on screen.
•
IOM Iss: 4 11-21
Standard Test Gas
350 - 500ppm (balance in air).
0.6 - 0.8% BV (balance in air)
0.3 – 0.4% BV (balance in air)
5000 - 6000ppm (balance in air)
15% (balance in Nitrogen).
>4500ppm or Breath on Sensor
Merlin Detector-TFT
12