Troubleshooting - Table Dragstrip

Home | Contact Us | Submit Troubleshooting Info | Search | Help

Table Dragstrip Not Working

Applies to

ThermoFlex

Description

Table dragstrip not working. (little or no vacuum)
This can be checked by typing in the command "act drag on" while in diagnostic mode. Starting at one side of the table, lay a piece of 8½ X 11 paper over the drag holes and pull it across the holes. A slight amount of resistance should be felt. Repeat this procedure for the rest of the holes in the table. The amount of resistance felt should be consistent. If there is no vacuum, or inconsistent vacuum, see the following causes and solutions.

Causes

Vacuum generators not receiving compressed air
Solenoid valve on manifold block not functioning
Vacuum generator(s) plugged
One or more vacuum generators not working
One or more vacuum boxes loose under table

Solutions

Check to see that vacuum generators are receiving compressed air by removing the tubes that go into the inlet port of the vacuum generator and typing the command; "act drag on" while in diagnostic mode. (hold the ends of the tubes steady to keep them from flying around. If air does come out of the tubes, the vacuum generators will have to be cleaned. Please refer to the section on vacuum generator maintenance.
If air does not come out of the tubes, check the dragstrip solenoid valve (labeled "TBL DRG"). If the valve is getting power when the "act drag on" command is entered, the solenoid valve will have to be replaced.
To check for loose vacuum boxes under the table, switch the air tubes that enter the vacuum generators with those that exit the vacuum generators. Type in the "act drag on " command. This will cause compressed air to come out of the drag holes as well as any holes between the vacuum boxes and the table. With the table open, feel with the back of your hand for any air leaks that may be coming from the interface between the vacuum boxes and the table. If air leakage is felt, stop the airflow by typing "act drag off" and seal up the area with "goop" sealant.
If the vacuum is inconsistent across the table, the vacuum generators will have to be cleaned. Refer to the section on vacuum generator maintenance.