441-622-015 rev. 02/24/2022
Type 500X
Page 6
Under normal circumstances, no maintenance should be required. If clean dry air is not used the orifice can
become blocked. To clean, first turn off supply air, unscrew and remove orifice assembly (large silver screw
head located above the out port). Then unplug orifice by using a wire that has a smaller diameter than 0.015 in.
(0.38 mm). Use compressed air to blow out any loose particles inside the orifice assembly. Screw orifice
assembly back into unit.
PROBLEM
CHECK
No or low output
Zero adjustment *
Clogged orifice
Supply pressure too low
Leakage
Connections
Low or improper span
Zero and Span adjustments
Supply pressure too low
Output leakage
Erratic operation
Electrical input signal
Loose wires or connections
Liquid in air supply
*most common
If problems are not solved by troubleshooting
procedures, contact a factory application’s
engineer at (603) 886-9400 for further assistance.
ControlAir LLC products are warranted to be free from defects in materials and workmanship for a period of eighteen
months from the date of sale, provided said products are used according to ControlAir LLC recommended usages.
ControlAir LLC’s liability is limited to the repair, purchase price refund, or replacement in kind, at ControlAir, Inc.’s
sole option, of any products proved defective. ControlAir LLC reserves the right to discontinue manufacture of any
products or change products materials, designs or specifications without notice. Note: ControlAir does not assume
responsibility for the selection, use, or maintenance of any product. Responsibility for the proper selection, use, and
maintenance of any ControlAir product remains solely with the purchaser and end user.
These products are intended for use in industrial compressed-air systems only. Do not use these
products where pressures and temperatures can exceed those listed under Specifications.
Before using these products with fluids other than air, for non-industrial applications, life-support systems, or other
applications not within published specifications, consult ControlAir LLC.
4. MAINTENANCE
5. TROUBLESHOOTING
NOTE
6. WARRANTY & DISCLAIMER
WARNING
