B-70315EN/02 7.UNITS
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7.12 REPLACING THE WATER DISTRIBUTION UNIT
7.12.1 Replacement Method
Replace the water distributor unit as follows. The IN side and OUT
side of the distribution unit of C1000-E, C5000-E, and C6000-E are
separated from each other, and a different specification number is
assigned to each side. Replace only a side to be replaced.
(1) Turn off the power to the CNC, then turn off the main circuit
breaker and power supply for the laser oscillator. Turn off the
power to the chiller unit.
(2) See Section 3.4, and remove water from the oscillator by
supplying compressed air. Compressed air must be supplied only
from the cooling water inlet on the C1000-E. The structure of the
water flow sensor does not allow cooling water to be drained by
compressed air supplied from the cooling water outlet.
(3) Mark the water pipes connected to the distribution unit, then
disconnect the pipes.
(4) Remove the bolts securing the distribution unit, then remove the
unit.
(5) Mount a new distribution unit by reversing steps (3) and (4).
Connect the water pipes correctly, noting the alignment marks.
(6) Operate the chiller unit manually to circulate the cooling water.
Check that no water leaks from the fittings that were
disconnected during the replacement. After checking, restore the
original chiller setting. Check the amount of water in the chiller
unit, and add water if necessary.
Fig.7.12(a) Detail of water distributor unit (C1000-E)