20
Chapter 4 Specification
CAUTION :
◎
The Chiller needs to meet the requirements of the above table under the
conditions of a circulating temperature of 40 ° C and an outlet temperature of 22 ° C.
◎
The above recommended water pressure requires the pressure drop of the main
line Δp ≤ 0.5bar. If this value is exceeded, the main circuit water pressure should be
increased accordingly.
◎
Cooling water and filter element need to be replaced once a month; replace the
cooling water with glycol antifreeze every winter (below 0
℃
environment). After the
0
℃
environment is over, replace the antifreeze with pure water and replace the filter
to restore the maintenance frequency once a month.
4-
QBH
Water Cooling Condition
Cooling Method
Water pipe size
requirement
Water Flow
Rate
（
L/min
）
Hydraulic
pressure
（
bar
）
Cooling
Temperature
（℃）
Water cooling
Outer diameter * inner
diameter = Φ6 * Φ4
≥ 2
≥ 3
28-30
NOTE:
◎
External light path tube inner diameter ≥ 8mm, length ≤ 20m;
◎
The length of the Φ6 pipe connected to the LOE after switching from the external
light path is ≤ 1m;
◎
QBH is connected in series with the cutting head;
◎
The above recommended external light path water pressure requires the pressure
drop of the cutting head Δp ≤ 1.5bar. If this value is exceeded, the external light path
water pressure should be increased accordingly.
