Check up a backlash of inlet and final valves and adjust if necessary.

The specification клапанных backlashes (a backlash a)

On cold

At temperature of a cooling liquid 15 - 25С (59 - 77F)

On hot

At temperature of a cooling liquid 60 - 68С (140 - 154F)

The inlet

0.13 - 0.17 mm (0.005 - 0.007 inches)

0.17 - 0.21 mm (0.007 - 0.008 inches)

The final

0.23 - 0.27 mm (0.009 - 0.010 inches)

0.28 - 0.32 mm (0.011 - 0.012 inches)