7� Routine Maintenance; 7�1 Cleaning; 7�2 Filters; 7�3 Battery Charging / Replacement - Honeywell Impact Series Operating Instructions And Maintenance Manual

7� Routine Maintenance
The Impact Series is designed to operate almost maintenance free under most
conditions, except for the need for regular calibration. However, it is recommended
that on a regular basis the instrument is cleaned and the filters changed.
7�1 Cleaning
The instrument may need cleaning if exposed to dirty or hostile conditions. This
can be easily achieved by wiping over with a damp cloth. Do not use bleaching
products or products containing silicon compounds as these can cause damage
to the sensors.
7�2 Filters
The Gore-tex filter fitted under the cover grille is manufactured from a water repelling
material to protect the sensors from the ingress of water and other contaminants.
The life of this filter is dependent on the amount of dust and viscous liquids in the
atmosphere. If it becomes dirty (discolored) it will act as a barrier and prevent the
diffusion of the atmosphere onto the sensors, and must be replaced. This is easily
achieved by removing the cover grille screws (Section 1.2 Product Overview (5)),
discarding the old filter and fitting a new filter, using the molded detail to locate it.
Note that for instruments fitted with a chlorine sensor a stainless steel filter (part
number P2302D0823) must be used instead of the Gore-tex filter.
7�3 Battery Charging / Replacement
WARNING
Battery Charging and replacement must not be carried out in a hazardous or potentially
dangerous area.
A mixture of dry cell and rechargeable battery packs must not be used - the instrument
safety system prevents operation in such a situation, and the instrument displays a
fault message and activates the audible and visual alarms.
If the instrument is fitted with an electrochemical sensor for CO
instructions in Section 8 Charging Procedure for Impact Pro fitted with CO
Cartridges.
INfoRmAtIoN
To maintain peak battery performance, Honeywell Analytics strongly recommend that
every 4 to 6 months the batteries be fully discharged before recharging. To do this,
remove the Impact from the Base Station (if fitted) and switch the Impact on. Leave
the Impact to run until it switches off. This may take up to 12 hours depending on
the state of charge of the batteries. A Warning 14 (Battery Low) will be generated
towards the end of this procedure, which can be acknowledged or ignored. Once the
Impact has switched off, fit it into the Base Station and allow the instrument to fully
recharge before next use.
In severe cases (e.g. when the instrument has not been used for some time) it may
be necessary to repeat this 2 or three times to restore peak battery performance.
Should the batteries in the Impact instrument become excessively discharged (e.g.
when unused for some time) there may be occasions when the alarm LEDs and sounder
will operate when attempting to switch the instrument on before recharging. In this
instance please place the instrument into the powered Base Station and switch the
instrument off when Fault 23 is displayed. The Impact will then proceed to charge
as normal.
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Impact / Impact Pro / Impact Pro IR Operating Instructions
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