14.3. Safety locks - the general information
The most part of safety locks is located on the considered cars in the main assembly block located at the left end face of the dashboard (see Specifications). The second assembly block of the relay and safety locks is placed in a motive compartment, near the tank of brake fluid. Near the rechargeable battery the block of the fusible inserts used for protection at once of several chains of electric equipment of the car is located.
Each separate safety lock is used for protection of any concrete electric contour or at once several contours.
In assembly blocks the safety locks of a compact design equipped with bayonet contacts, and if necessary, which are easily taken by fingers from the nests in the block are used. At refusal any of consumers of the electric power first of all it is always necessary to check a condition of the corresponding safety lock. Include ignition and by means of a lamp sampler probe open plugs of each of safety locks. If the lamp lights up at connection to each of plugs, therefore, a safety lock as it should be. If tension takes place only from giving of food, so the safety lock fused. Let's notice also that usually the case of a safety lock is manufactured of transparent plastic through which it is easy to define a condition of a working crossing point.
When replacing of the fused safety lock strictly you watch that the prepared replaceable element corresponded on the type which failed. The safety locks calculated on various nominal current physically can differ in nothing from each other, without being at the same time interchangeable. Each of electric chains has various working parameters and needs various degree of protection therefore replacement of the safety lock calculated on a certain current, a safety lock with not the corresponding parameters is fraught with the most serious consequences (up to fire emergence). Working parameters of a safety lock are usually designated on its plastic case, besides, color identification in addition is used (see Specifications).
If the new safety lock at once after installation also fails, it does not make sense to make its further replacement, - before it is necessary to reveal and remove the cause of an overload in a chain. In most cases that appears the short circuit of a connecting electrical wiring caused by damage of its isolation. Spare safety locks usually are located in free blocks of the assembly block.