Product Manual

INTRODUCTION
Since 1931, utility and construction craftsmen have looked to Fisher
to set the standard of quality in the design and manufacture of
locating equipment. The Model TW-6 with its many timesaving
accessories continues the Fisher M-Scope tradition of giving you
even greater speed and precision in locating underground pipes
and cables.
The surest way to effectively use the TW-6 and its new accessories
is to practice on known “conductors”. Such items a valve box
covers, manhole covers, or valves clearly visible at the surface of
the ground are excellent items to start locating. This way you will
quickly get the “feel” of the instrument before taking it into the
eld.
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CHANGING BATTERIES
Turn the instrument over on its face (position is the same for both
transmitter and receiver) and remove access plate with coin or
large blade screwdriver.
Lift the battery pack out carefully. Turn the battery pack slightly
and unsnap the battery connector. Change all eight batteries.
Then reattach the connector to the pack. Slip the battery pack
back into its compartment and do battery test. Refasten the
access plate.
Both the transmitter and receiver will work from 30 to 40 hours on
a set of 8 standard quality AA batteries. Alkaline batteries will give
at least 30 to 40% greater life. In cold weather, alkaline batteries
are much livelier than standard carbon zinc batteries.
Recharging Ni-Cad Batteries
Be sure that all of the AA batteries in the battery pack for the
transmitter and receiver are Ni-Cad rechargeables.
WARNING: The optional recharge kit (NiCd) is not available for
Europe and cannot be used there.
WARNING: Batteries can contain hazardous materials and must
be disposed according to the laws in your country.
CAUTION: Do not try to recharge the batteries that come with the
TW-6, or any other batteries, except Ni-Cad rechargeables.
The battery packs of 8 batteries remain in the transmitter and
receiver. The wall outlet recharger has two wires with connectors
so that the TW-6 transmitter and receiver can be recharged
simultaneously. Plug one jack into the Ni-Cad recharge receptacle
of the transmitter and the other jack into the Ni-Cad recharge
receptacle of the receiver, and the charger itself into a wall outlet
that has 100-120 VAC 60 Hz. The red light on both transmitter and
receiver indicate only that the connections are correct, not rate
of charge, nor charge level of the battery packs.
Rechargeable batteries will last approximately 20 hours of
intermittent use before they need to be recharged. Recharging
time should be at least 16 hours
.
WARNING: Batteries can contain hazardous materials and must
be disposed according to the laws in your country.
This Category II radiocommunication device complies with
Industry Canada Standard RSS-310.
Ce dispositif de radiocommunication de catégorie II respecte
la norme CNR-310 d’Industrie Canada.