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15-21-obogrevatel-zadnego-stekla.html
15.21. Heater of back glassDefrosting of back glass is carried out by a heater which represents a number of the parallel conductors which have been raised dust on glass. At a transmission of an electric current conductors heat up and defreeze and clean off back glass from moisture. The current moves from the relay located in the block of safety locks of a motor compartment. If glass on was cleared in 15 minutes, it is necessary to include repeatedly a heater on the second cycle, i.e. for 15 minutes.
Check
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For check of a heater of back glass wrap up щуп the voltmeter an aluminum or tin foil to prevent damage of a current-carrying strip of a heater. For definition of break it is necessary to press a finger a foil and to move it along a current-carrying strip.
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1. Start the engine and include a heater of back glass. Connect negative щуп the voltmeter to "mass" of the car. In turn connect щуп the voltmeter to the center of each current-carrying strip of a heater of back glass. The voltmeter should show tension about 6 Century. |
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2. If the voltmeter shows tension 12 In, means, the current-carrying strip of a heater has break from outside between a point of connection of the voltmeter and the party of the heater connected to "weight". |
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3. If the voltmeter shows tension below 0 In, means, the current-carrying strip of a heater has break from outside between a point of connection of the voltmeter and the party of the heater connected to the positive plug of the storage battery. |
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4. For definition of a point of a gap move щуп on a current-carrying strip of a heater to the relevant party. A point where the tension shown by the voltmeter, sharply changed and is a gap place. |
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5. By an ohmmeter measure resistance of each current-carrying strip between the lateral plug of a heater and the center of each strip. The section of a strip having a gap, will have resistance twice above, than resistance of other strips of a heater. |
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Repair of a current-carrying strip of a heater
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For repair of a current-carrying strip of a heater prepare the following materials and tools:
- current-carrying weight;
- melkodispersny current-carrying weight;
- sticky tape;
- solvent;
- brush.
Solvent wipe glass area about a rupture of a current-carrying strip of a heater and paste strips of a sticky tape from two parties of a current-carrying strip. |
Put with an interval in 15 mines three layers of current-carrying weight. Remove a sticky tape and wait, the current-carrying weight will not dry yet. In 24 hours with a sharp knife remove surpluses of current-carrying weight.
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After restoration of a current-carrying strip of a heater purification of glass carry out along a strip of a heater a little humidified rags. |
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