FALSE SIGNALS
25
Coin lying at an angle 
or on edge.
Long ferrous object (nail).
Large deep target 
(water pipe).
?
Figure 8. TARGETS THAT AREN’T THERE.
Your CZ-3D doesn’t require a lot of care. It’s built with high quality 
materials but there are a few things you should do to keep it in 
peak operating condition.
1.  If  you’re not  going to  be using  it for a while, take 
the batteries out. Acid damage caused by leaking 
batteries can be severe.
2.  Avoid extreme temperatures. Don’t leave it inside 
a closed car sitting in the sun, or  even worse, the 
trunk of a car.
3.  If you “scrub” the search coil on the ground, you’ll 
eventually  wear  through  the  bottom  of  the  coil. 
Replacement coils are expensive. Instead, invest in 
a coil cover. They’re cheap.
4.  Keep  your  CZ-3D  dry  and  clean.  If  you’ve  been 
working in or around salt water or dust, wipe it down 
with a damp cloth and dry it with a hair dryer (low or 
no heat) or dry cloth. Remove and clean the lower 
stem. Keep the lock nut free of sand and dirt.
MAINTENANCE