Heath Consultants Gasurveyor 500 Series - Manual (Page 60)

C-2
GAS MEASUREMENT INSTRUMENTS LTD.
CHECKLIST
1. Check the instrument has no obvious faults.
2. Check accessories.
3. Read and understand handbook before use.
4. Switch ON (see overleaf)
5. Check battery levels.
6. Check “ZERO” in fresh air.
SAFETY
• The instrument must be regularly serviced and calibrated by
fully trained personnel in a safe area.
• Batteries: Alkaline batteries or *Rechargeable battery pack
must be exchanged (*and recharged) in a safe area and fitted
correctly before use. Never use damaged batteries or expose
to extreme heat.
• Only GMI replacement parts should be used.
• If the instrument detects gas, follow your own organisation’s
procedures and operational guidelines.
• The combustion chamber is a flameproof assembly and must
not be opened in the presence of a flammable atmosphere.
• Gasurveyor 3-500 instruments are certified as
EEx iad IIC T4 (-20
o
C < Tamb < 50
o
C).
BAS01ATEX2292 II 2 G.
UL Class 1 Groups A, B, C and D.
• This equipment is designed and manufactured to protect against
other hazards as defined in paragraph 1.2.7 of Annex II of the
ATEX Directive 94/9/EC
Any right of claim relating to product liability or consequential damage
to any third party against GMI is removed if the warnings are not
observed.
AREAS OF USE
Exposure to certain chemicals can result in a loss of sensitivity of the
flammable sensor. Where such environments are known or suspected
it is recommended that more frequent response checks are carried out.
The chemical compounds that can cause loss of sensitivity include
Silicones, Lead, Halogens and Sulphur. Do not use instrument in
potentially hazardous atmospheres containing greater than 21% Oxygen.