1 | Pressure plate |
2 | Heat exchanger |
3 | Compressed-air line |
A | Test connection |
B | Test connection |
C | Test connection |
T43.30-0033-11
Danger ! | Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. | |
Danger ! | Risk of injury caused by touching hot retarder and by scalding from hot retarderoil. Risk of injury to skin or eyes caused by retarder oil escaping under high pressure | Do not carry out any work unless retarder is switched off. Wear suitable protective clothing and safety glasses when working on the hot retarder. | |
| Remove | ||
1 | Remove heat exchanger (2) | ||
| Check | ||
2 | Attach commercially available pressure plate (1) to heat exchanger (2) with O-rings | Commercially available devices/tools | |
3 | Install compressed air line (3) on test connection (A) | The large oil circuit is checked at test connection (A). | |
4 | Fill water side of heat exchanger (2) with hot water and seal | Observe the specified water temperature. | |
Water temperature for compressed air testing of heat exchanger | |||
5 | Gradually apply compressed air to heat exchanger (2) and check heat exchanger (2) for leaks | | |
Test pressure of heat exchanger | |||
If there are problems | |||
| |||
Replace the heat exchanger (2). Drain any preservation oil which may have collected in the new heat exchanger (2) and flush out with hot water. | |||
The new heat exchangers (2) are moistened with preservation oil on the water and oil side. | |||
6 | Repeat operation steps 3 to 5 at test connection (B) | The small oil circuit is checked at test connection (B). | |
7 | Repeat operation steps 3 to 5 at test connection (C) | The transmission oil circuit is checked at test connection (C). | |
8 | Detach compressed air line (3) | ||
9 | Detach press-off plate (1) | ||
10 | Drain water from heat exchanger (2) | ||
| Install | ||
11 | Install heat exchanger (2) |
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