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Checking pressure relief valve in the cap of the expansion tank
| Fig. 2.185. Checking pressure relief valve in the cap of the expansion tank
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Install the cooling system tester with adapter for cooling system on the cover (Fig. 2.185). Create a hand pump tester overpressure max. 1.6 bar. Pressure reducing valve thus should remain closed. In premature opening of the pressure reducing valve Replace the cover. Lift the pressure is higher than 1.6 bar. Pressure reducing valve should open. If the pressure relief valve does not open, replace the cover.
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