Contracor DBS-100, User Manual

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8 CONTRACOR
®
Version 2.0
ENGLISH
4. Maintenance and Troubleshooting.
4.1. Machine maintenance.
Pressurizing valve replacement.
Open the inspection door of the machine to get access to the pressurizing valve.
Screw out the guide tube with the valve inside. Install a new valve and screw the guide tube
back into its place.
Pressurizing valve ring replacement.
The ring is replaced trough the machine filling orifice. Pull out the old ring, put a new
ring into the groove and press it firmly to correct position.
ATTENTIION!
USE ONLY ABRASIVE MATERIALS, APPROPRIATE FOR ABRASIVE BLASTING
OPERATIONS.
NEVER USE WET UNSIFTED ABRASIVE MATERIALS.
4.2. Troubleshooting.
Clogging.
If neither abrasive, nor air comes out of the nozzle, relieve pressure and depressurize
the machine, then ensure that the nozzle is not clogged. If only air without any abrasive
comes out of the nozzle, fully open the metering valve, and then quickly close and open
again the lower ball valve of the line. If these actions do not help to relieve the pressure in
the machine, open the inspection door and ensure that there is no foreign matter in the
tank (stones, paper, etc.).
Abrasive surges.
During start-up of the machine abrasive surges are normal to a certain degree.
However, if abrasive surges continue, you should stabilize the abrasive flow by quick closing
and opening of the line lower ball valve. Abrasive surges often result from elevated moisture