Checking Lid (On Reservoir)
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Information
The lid has a two-stage design and as a result, two test steps are required.
- Screw on the lid using the adapter DS 22K (aluminium).
- 1.1. Then, connect it to tester for cooling system WE 1069 and hose adapter FZ 100K .
Test step for stage 1:
- Build up overpressure.
- 2.1. The first stage opens at an overpressure of approx. 1.3 bar. The pressure then slowly decreases again and the valve closes at 1.0 bar. If the pressure decreases further, replace the lid.
Test step for stage 2 if the minimum pressure in stage 1 is maintained:
- Apply overpressure to the valve of step 1 by pumping rapidly. The valve of step 2 must open at an overpressure of approx 1.8 bar.
- 3.1. If the valve does not open, replace the lid.