The cooling design must guarantee that the cooling time will not exceed 60% of the cycle time.Temperature different across the product ≤10°C in running conditions when demoulding. This value will be measured 30 minutes after getting produced parts. Just before stopping the machine, the cooling system will be switched off and the measurement will be made at several points of the cavity.Toolmaker will provide a cooling report in the trial T1 which will show the difference of temperatures between cavity surface and specified temperature.The number of circuits will also be appropriate to enable the ΔT of the water between intake and outlet to be less than 3ºC.A leak tightness test of this circuit will be performed for 10 minutes at 6 bars pressure and when the mould is attempered, leak tightness test will be in process conditions.