Renishaw NC4 Installation Guide

4-3
www.renishaw.com/nc4
Grain colour Causes Solutions
Green/amber Dryer functioning correctly. No action required.
Yellow Initial state. Allow a minimum of 10 minutes from start of air
ow for the dew point indicator to turn green.
Water ow into membrane dryer. Check and replace lters if necessary.
Check condition of inlet air for excess oil or
water.
Ensure outlet of purge air port is free of
obstructions.
Lower input air temperature. Install in-line air
coolers if necessary.
Brown/black Membrane contaminated / oil carryover. Check condition of inlet air for excess oil or
water.
Replace membrane and dew point indicator.
NOTE: Items shown within dotted boxes (B) and (C) are included in the membrane dryer service
pack obtainable from Renishaw; see the NC4 non-contact tool setting accessories data sheet
(Renishawpartno. H-2000-2223).
Removal and replacement of membrane dryer module
Regularly inspect the dew point indicator (B) on the membrane dryer (C). The membrane dryer should be
replaced according to the table below or at least once every four years.
Dew point indications

Renishaw NC4 Specifications

General

Brand	Renishaw
Model	NC4
Category	Tools
Language	English