7.7.5. Relay of screenwash

Fig. 7.27. Scheme of inclusion of a cleaner and washer of a windshield: 1 – windshield washer electric motor; 2 – electric motor of screenwash; 3 – assembly block; 4 – ignition switch; 5 – relay of unloading of the switch of ignition; 6 – switch of a cleaner and washer of a windshield; K3 – the relay of screenwash; And — to power supplies; In — an order of conditional numbering of plugs in a cleaner electric motor block

The scheme of connections of conclusions of the relay is shown in fig. 7.27.
The relay has to provide turning on of the electric motor of a cleaner with a frequency of 14 of ±4 cycles a minute in the work range from idling (loading only drafts) to loading the maximum effective moment of 3,92 N · m (0,4 kgfs · l), with a frequency of rotation of a shaft of a motor-reducer not less than 20 min.-1, at the ambient temperature of 20 ±5 °C and supply voltage of 14 ±0,2 Century.
The relay has to provide switching of an operating mode of a cleaner to small speed at inclusion of a washer of a windshield (if the cleaner worked at the faltering mode or was switched off). After switching off of a washer of a windshield the cleaner has to make 2–4 full cycles of cleaning at a small speed at the ambient temperature of 20 ±5 °C and supply voltage of 14 ±0,2 Century.