Internal Visiport Venting
Visiport's patented design incorporates the ability to vent ambient or "clean" air from outside the machine cabin to prevent internal fogging of the Visiport. The most common method of providing this air flow is throught the use of flex conduit, which is a steel wire braid over a PTFE (teflon) tubing material. With the new B-type units, T2K also provides PUR (polyurethane) tubing as an alternative conduit material. [Shown as PUN on parts list and price sheets]
Venting and Air Flow
Improper installation of the flex conduit can block air flow to the unit. This can allow the Visiport spin window to fog up and can possibly lead to electrical and/or mechanical malfunctions.
Improper restriction of air flow can be caused by (a) over-tightening the fittings, (b) accidentally putting a crimp in the flex tubing, or (c) inappropriate placement of silicone sealant during installations. Please note that adequate air flow to the unit through installed flex conduit is necessary for the unit to function properly. The flex conduit protects the wiring harness between the Visiport unit and the external bulkhead assembly the on/off switch and/or motor electronics, but it is air flow that is the primary purpose behind the use of the flex conduit, PUN tubing, and STK-Steel Tubing Kit (for discontinued Visiport 210, 215 and 220 models) sold with the product.
Custom OEM Wiring Harness / Tubing Designs
Customers incorporating their own tubing scheme to route the wiring harness between the Visiport and the external bulkhead assembly or the machine tool's electrical cabinet should note that it is extremely important to ensure adequate air flow is accommodated in their custom tubing designs.
If aesthetics or integration concerns demand a customized routing scheme, air flow considerations cannot be overemphasized. Due to the necessity to prevent fogging and internal moisture problems that may cause premature product failure, T2K can easily supply flex conduit for new or currently in service Visiport units. In addition, T2K is happy to provide technical support to customers who require custom installations. Contact T2K for details.
Posted by T2K