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instructions for

open and short dc circuit tester 

model no: 

FF400

thank you for purchasing a sealey product. Manufactured to a high standard, this product will, if used according to these 

instructions, and properly maintained, give you years of trouble free performance.

IMPORTANT:

 PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE 

THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR 
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

1.  saFety  

1.1.    

GeneraL saFety instructions

 

9

   familiarise yourself with the application and limitations of the tester as well as the potential hazards. if in AnY douBt consult A  

  QuAlified electriciAn.

 

8

  

do not

 apply voltage or current to the meter that exceeds the specified maximum.

 

9

    only for use with dc voltages.

 

8

  

do not

  connect to a circuit exceeding 42V dc under any circumstances.

 

8

    

do not 

use on Ac voltages.

 

8

  

  do not

 use on any circuit directly or indirectly connected to Ac lines or any other Ac power source. 

 

8

    

do not

 use with any component or circuits of the ignition system.

 

9

   Modern vehicles contain extensive electronic systems. You are required to check with the vehicle Manufacturer, for any specific    

  instructions regarding the use of this type of equipment on each vehicle.

 

no liability will be accepted for damage / injury, where this product is not used in accordance with all instructions.

 

9

   When not in use, store the meter carefully in a safe, dry, childproof location. storage temperature range -10°c to 50°c.   

1.2.    

personaL precautions

 

9

   When using this tester, please observe all normal safety rules concerning:

 

9

   Protection against the dangers of electronic current.

 

9

   Protection of the meter against misuse.

 

8

  

do not

 use leads if damaged or if the wire is bared in any way.

2.  introduction

find short and open circuits fast and easily. simply attach the sender unit to the circuit and follow the wires using the detector. ideal for 

automotive repairs. suitable for all dc circuits up to 42V. supplied in carry-case. Powered by two 9V batteries.

ff400 | issue 2 10/04/17

Original Language Version

© Jack sealey limited

      refer to

   instructions

sender

receiver

rotary switch

selection switch

Summary of Contents for FF400

Page 1: ...ly or indirectly connected to AC lines or any other AC power source 8 8 DO NOT use with any component or circuits of the ignition system 9 9 Modern vehicles contain extensive electronic systems You are required to check with the vehicle Manufacturer for any specific instructions regarding the use of this type of equipment on each vehicle No liability will be accepted for damage injury where this p...

Page 2: ...of receiver and check again 3 2 6 The short circuit is located in the area where the audio signal stops or changes significantly 3 3 Wire Tracing 3 3 1 Wire tracing hook up and procedures are essentially the same as for locating short circuits The sender sees the load light accessory etc as the short circuit or connection to ground For wire tracing simply follow the wire with positive beeping audi...

Page 3: ...dle or conduit when there is a split In this case it may be possible to follow the wrong branch for a short distance and still receive a positive audio indication 3 7 2 The probe may be picking up the signal from the other nearby branch the one with the wire actually being traced To avoid following the wrong path the branches should be swept while maintaining the probe outside the apex area betwee...

Page 4: ...Electrical and Electronic Equipment WEEE When the product is no longer required it must be disposed of in an environmentally protective way Contact your local solid waste authority for recycling information Battery Removal See section 4 4 Under the Waste Batteries and Accumulators Regulations 2009 Jack Sealey Ltd are required to inform potential purchasers of products containing batteries as defin...

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