Hach-Lange SC 200 Class 1 Compliance instrument manual - Manual (Page 4)

2. Pivot the screwdriver away from the groove and separate the two
halves.
Maintenance
D A N G E R
Explosion hazard. Do not connect or disconnect electrical
components or circuits to the equipment unless power has been
switched off or the area is known to be non-hazardous.
D A N G E R
Explosion hazard. Substitution of components may impair suitability
for Class 1, Division 2. Do not replace any component unless power
has been switched off and the area is known to be non-hazardous.
4 English