Model S4000T
ii
System Integrity Verification
General Monitors’ mission is to benefit society by providing solutions through
industry-leading safety products, services and systems that save lives and protect
capital resources from the dangers of hazardous flames, gases and vapors.
The safety products you have purchased should be handled carefully and installed,
calibrated and maintained in accordance with the respective product instruction
manual. Remember, these products are for your safety.
To ensure operation at optimum performance, General Monitors recommends that
certain maintenance items are performed.
Commissioning Safety Systems
Before power-up, verify wiring, terminal connections and stability of mounting for all
integral safety equipment including, but not limited to:
• Power supplies
• Control modules
• Field detection devices
• Signaling / output devices
• Accessories connected to field and signaling devices
After the initial application of power (and any factory specified warm-up period) to the
safety system, verify that all signal outputs, to and from devices and modules, are
within the manufacturers’ specifications. Initial calibration / calibration checking /
testing should be performed per the manufacturers’ recommendations and
instructions.
Proper system operation should be verified by performing a full, functional test of all
component devices of the safety system, ensuring that the proper levels of alarming
occur.
Fault/Malfunction circuit operation should be verified.
Periodic Testing/Calibration of Field Devices
Periodic testing/calibrating should be performed per the manufacturers’
recommendations and instructions. Testing/Calibrating procedures should include,
but not be limited to:
• Verify zero reading
• Apply a known concentration of gas, and verify accuracy
• Verify integrity of all optical surfaces and devices
• For flame detectors, use the appropriate test lamp
When testing produces results outside of the manufacturers’ specifications, re-
calibration or repair/replacement of the suspect device(s) should be performed as
necessary. Calibration intervals should be independently established through a
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