Honeywell Impact Series Operating Instructions And Maintenance Manual page 57

Special Notes for NH
It is important that you read all of the notes below before installation or use of your
new cartridge.
Installation of your NH
To install the cartridge, follow the instructions below.
Note
Cartridge Installation or Replacement must never be carried out in a
hazardous area.
1. If a cartridge was pr
cartridge is to be installed, remove the Front Cover Grille using the Allen
Key provided in the bottom of the Impact Pro. Unscrew the screw in the
center of the cartridge and lift the cartridge from the Impact Pro.
2. Place the NH
home using the Allen Key. Guide the cartridge if necessary using your
fingers to ensure that it is seated correctly.
3. Replace the Pump Seal with the one provided with your cartridge and
replace the Front Cover. Refit the Allen Key into the bottom of the Impact
Pro.
4. Allow 20 minutes for the sensors to stabilize before first use.
5. To complete installation of the cartridge, switch the Impact Pro on and
accept the New Configuration when prompted to do so.
Using your NH
3
Please ensure that the following points are noted when the cartridge is in service.
1. The Ammonia channel has
other channels of the cartridge will be reading correctly, the detector
should not be used to measure Ammonia until the 'warm up' message
has disappeared.
2. The operating temperature range of the cartridge defaults to that of the
lowest sensor fitted. For NH
3. Always use PTFE tubing (maximum length of 500mm) when calibrating
the NH
3
4. When performing a Span Calibration on the NH
practice to flow NH
minimum of 15 minutes without the flow adapter fitted to the Impact Pro
before attempting a span calibration. Failure to do so may result in a false
calibration of the NH
5. The accuracy of the instrument must be checked with known concentration
calibration gas before each day's use. If any sensor fails, recalibrate the
Impact Pro before using or alternatively replace the cartridge. Please refer
to Section 4.9 on general instructions on how to calibrate.
6. Apply calibration span gas at a rate of 300 ml/min for a period of 5 minutes
before starting the span calibration on the sensor.
7. With regard to the actual sensors fitted, please perform span calibrations
on the sensors of the Impact Pro cartridge in the following order: Cl
H S, CO, Flammable.
2
8. Purge the system with air for a period of 15 minutes between Cl
calibrations to avoid interaction between these two gases.
Impact / Impact Pro / Impact Pro IR Operating Instructions
Cartridges
3
Cartridge
3
eviously fitted to the Impact Pro into which the NH
cartridge into the Impact Pro and screw the cartridge fully
3
Cartridge
channel.
calibration span gas through connected tubing for a
3
channel.
3
an extended warm-up time. Although the
this is -20°C to +40°C.
3
channel it is good
3
, NH
2
and NH
2
3
,
3
3
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