Teledyne First Responder CG User Handbook Manual page 54

2. Remove battery cover.
Fig. 5-2 Remove Battery Cover
3. Remove the old batteries.
4. Check battery compartment for damage to spring
contacts or corrosion on springs.
C a u t i o n : U n d e r n o c i r c u m s t a n c e s s h o u l d
rechargeable batteries be substituted for alkaline.
5. Insert four new batteries observing correct polarity
indication in battery compartment base.
6. Replace battery cover and fasten base screws.
7. Check that the instrument switches on and works
to specification.
5-2
FIRST RESPONDER CG - USER HANDBOOK