Hochiki FIRElink-400CM - Manual (Page 52)

Page 52 of 58 FIRElink-400 Air Sampling System – Installation Manual
© 2010 Hochiki Europe (UK) Ltd 9-5-0-346/ISS4/OCT10
11 Maintenance
FIRElink-400 range is a very low maintenance detection system. If required, external cleaning of the unit
should be performed using a damp (not wet) cloth. Do not use solvents as these may mar the display
bezel. The only part that may require field replacement during servicing is the dust separator assembly.
The dust separator condition can be checked using the
Dust Separator test in the
Diagnostics menu , which gives a percentage reading of dust separator efficiency. When this
level drops to 80% the detector will signal a Separator renew fault and the dust separator will
need replacing.
As dust contained in the dust separators may expose maintenance personnel to a ‘Nuisance Dust‘ hazard
as defined by the ‘Control of Substances Hazardous to Health‘ (COSHH), it is strongly recommended that
suitable masks and protective clothing be worn when changing filters. Used separators are not intended
for re-use and should be disposed of.
The following illustration shows how the dust separator is replaced. Make sure to push the separator fully
home, or the detector will fail to register its presence, and will continue to indicate Separator change .
Open the front cover using the key provided, and locate the dust separator tab at the bottom right of the
detector as shown. Remove the black end piece with the removal tab from the filter element and dispose
of the element. Fit the new element into the plastic end piece and slide into the detector. The filter
should be fitted with the legend ‘IN’ towards the front of the detector. If the filter is inserted the wrong way
up, the detector will not register its presence and the Separator change legend will stay on the display.
When the replacement filter is fitted, the detector will automatically start a FastLearn routine.