Tank Reservoir - Siemens SINUMERIK 840D Maintenance Manual

FADAL MACHINING CENTERS
4.1.6 TANK
RESERVOIR
70
The tank reservoir is located next to the motor pump assembly in the chiller cabinet.
The tank has a 2 1/2 gallon capacity. Visually check the fluid level with the machine
powered on. If the fluid level is less than 1/2 of the tank, mix the DOWFROST™ to a
50:50 solution, with deionized water, or sodium free distilled water and fill to no more
than 3/4 full.
Figure 4-2: Tank Reservoir
Source for DOWFROST™
GOLDENWEST LUBRICANTS
1816 POTRERO AVE.
SOUTH EL MONTE, CA 91733
(626) 443 - 3441
(800) 540 - 5823
Do not accept any substitutes for DOWFROST™!
Pressure
The cooling system should maintain a constant pressure of 3 to 5 psi on machines with
400 I.P.M. rapid or 10 to 30 psi with 900 I.P.M. rapid.
If the pressure rises, the following conditions may exist:
• clogged pump filter;
• pinched oil lines;
• clogged cross tubes (only on 900 I.P.M. machines equipped with cooled ball screws
(8030, 6030, with cool Y ball screw)).
If the machine is losing pressure and the DOWFROST™ level keeps dropping, the
following conditions may exist:
• the O-ring that seals the ballscrew cross tubes is leaking;
• there is a hole in one of the lines.
MACHINE MAINTENANCE MAN-0126_ R1