General-technologies FF300 Fault Finder for Electrical Wiring Open / Sh Manuel d'utilisateur télécharger pdf (Page 3)

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4 - Setting the sensitivity level

The FF300R has three user selectable sensitivity ranges: ‘Low’, ‘Medium’ and ‘High’.

These ranges allow the technician to choose the degree of sensitivity most suitable to the

particular detection being performed.

4.1 Procedure to select the FF300R’s range :

1. Unit should be on, if not, turn it on by momentarily pressing the “ON/OFF” button.

2. Press and Hold “ON/OFF” button for approximately 3 seconds until a beeping

and flashing following the pattern below indicates that the desired sensitivity level

is set:

I- Low Sensitivity: single (1) flash and beep.

II- Medium Sensitivity : double (2) flash and beep.

III- High Sensitivity : Tripple (3) flash and beep.

The sensitivity level is selected in the following it sequence:

LOW MEDIUM HIGH

Sensitivity Adjustment Sequence

For example: If the FF300R unit is set to HIGH, in order to set the sensitivity to

LOW follow the steps described in 1. and 2. of this section (above).

4.2 Checking the current sensitivity setting:

The FF300R’s current sensitivity setting is displayed when the unit is in stand-by mode (unit

on, with no audible signal). The high sensitivity setting generates a quick tripple flashing

of the green LED, a double flashing in the medium sensitivity range and a single flashing

indicates a low sensitivity level setting..

Standby green LED flashing pattern:

Green LED shows a: FF300R Tracer set to:

Single (1) flash Low sensitivity

Double (2) flash Medium sensitivity

Tripple (3) flash High sensitivity

When turned off, the FF300R will retain the last selected sensitivity setting.

5 - How to use the probe:

The probe of the FF300R is built of coiled steel and can be bend as needed, in order to

reach wires in congested or difficult areas. Depending on the circuit characteristics and

sensitivity setting, the probe will pick-up the signal from the wire in a wide range of posi-

tions . However for the best possible range the FF300R’s probe tip (yellow cap) should

be positioned perpendicular ( at 90°) to the wire being traced and either above or below

it, as shown in Fig. 1 below.

Fig. 1 - Probe positioning

6 - Locating Short Circuits

Refer to the Hook Up Reference Chart in Pag. 6.

6.1 Observe the limits and safety precautions at all times (refer to the begining of this

handbook).

6.2 Connect the FF300T (transmitter) in series with the short-circuited wire, making sure

one of the unit’s clips is connected to the circuit’s positive supply (or vice versa for

vehicles with positive supply connected to chassis). A fuse socket (in place of the

blown fuse), connector, etc. provides a convenient place as shown in Fig.2 and Fig.3

in page 7.

6.3 Switch the transmitter on by pressing the On/Off button and observe if the Red LED

on the FF300T is lighted up. If not check connections, power supply, and in the case

of having connected the unit to any place other than the fuse socket, check that the

circuit’s fuse is installed and in working condition (not open). If necessary replace

with a new fuse with the same ratings.

6.4 Switch the FF300R (tracer) on, and check if green LED starts flashing.

6.5 Verify that the FF300R is set to the low sensitivity level (single green LED Flash).

6.6 Slowly sweep the wire, conduit, etc., with tracer, ensuring the tracer’s probe is per-

pendicular and above or below the wire being traced and as close as possible to it

6.7 Follow the wire or check it at different points, starting from the transmitter and moving

towards the load (accessory, light , etc.) observing the positioning of the probe as

indicated above. Continue this procedure while the audio signal (beeping sound) and

visual signal (flashing Red LED light) indicates the integrity of the circuit. If beeping

and flashing slows or stops it indicates that the probe is either moving away from the

faulty wire or it has passed beyond the short circuit point.

6.8 If difficult or impossible to get the FF300R Tracer to pick-up any signal, then adjust

the sensitivity to HIGH, and check again if a signal is received.

6.9 Double check positioning the probe before and after the suspected place. If the short

circuit point has been found, the audio/visual indicators will show circuit integrity on

for one position, but not for the other.

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General-technologies FF300 Fault Finder for Electrical Wiring Open / Sh Manuel d'utilisateur Page 3

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