154 METHODS OF COMMUNICATION FOR FOREST PROTECTION 



Remedy. Wihen testing to discover the cause of this trouble the receiver should 

 be left on the switch-hook. First disconnect the two wires which enter the telephone 

 set from the terminals marked " Line 1 " and " Line 2," (see Fig. 97) and screw 

 down the connections on the wires coming from the ringer. Now turn the generator. 

 If it turns easily 'and the bell rings well, the trouble is not in the telephone set. 



Then connect the line wires to " Line 1 " and " Line 2 " terminals and disconnect 

 the line wires from the protector, leaving the inside wires to the telephone set 

 attached to the protector. Now turn the generator handle. If it is difficult to turn, 

 remove the protector blocks from the protector and try the generator again. If it 

 turns easily, clean the protector blocks, replace the thrn piece of mica between them, 

 and 1 put back into the protector. Now test the generator again, <and if it turns prop- 

 erly connect the line wires to the protector and see if the telephone set works as it 

 should. 



If the generator turns properly when the line wires are disconnected at the pro- 

 tector, but is difficult to turn when the protector blocks have been cleaned and the 

 line wire again attached, the trouble is either in the wiring between the protector and 

 the pole, or out on the line, or in the wiring apparatus at one of the other stations. 

 Carefully examine the wiring and the line for a place where one of the wire* crosses 

 another (if the line is metallic) or where the main line or drop wire touches some 

 ground connection. If in a metallic line the wires are crossed, the generator crank 

 will turn hard as above described. This is also true of a grounded' line if the wire 

 becomes crossed with some foreign ground. On a metallic line, if one side of the 

 wire is touching a ground, a humming noise will be noticeable on the line. 



If the generator turns hard even when the line wires are disconnected from the 

 telephone, look for incorrect wiring or crossed wires in the set or for carbonized 

 bushings on the generator. When this latter trouble exists the odour of burning 

 rubber is noticeable when the door of the telephone is opened!. 



If every station on the line has the same trouble, call for an inspection of the 

 protector at each station, or look for trouble along the pole line or in the terminal 

 arrangements where the line is connected to a switchboard or to another line, and 

 inquire on that line, if necessary, or disconnect from it temporarily. 



Trouble No. 2, Bell Cannot ring up anyone; generator handle turns easily; local 

 bell rings when generator is turned. 



Cause. Loose connection or broken wire in set, to protector, line or ground; 

 line wire broken, or poor ground. 



Remedy. If a metallic line, look for a loose connection at " Line 1 " and " Line 

 2 " of the telephone set. If a grounded line, look for a loose connection on the main 

 line at " Line 1 " or on the ground wire which is attached to " Line 2 " in the instru- 

 ment. Look for a loose connection at the protector or where the inside wiring is 

 attached to the outside wires. Look for an open fuse. If the trouble is not found 

 at these points look for a 'broken wire or a poor ground. 



Trouble No. 3, Bell Cannot ring up anyone; generator handle turns easily; local 

 bell does not ring when generator is turned. 



Cause. Loose connection or broken wire in set, generator armature fails to make 

 contact with spring. 



Remedy. Look for a loose connection or a broken wire in the telephone set. See 

 that your ringers are in proper adjustment. It may be that one of the wires to the 

 generator is disconnected from one of the line wires, or one of the ringer wires may 

 have become loose or broken. 



Trouble No. 4, Bell Cannot ring other bells or only feebly; local bell rings all right 

 when generator is turned. 



Cause. Loose connection between telephone and line or ground; poor joints on 

 line or leaks; poor grounds. 



