441-622-015 REV 05-23-11
Type 500X
Page 5
3. MAINTENANCE
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.
4. TROUBLESHOOTING
PROBLEM
CHECK
No output or low output
Zero adjustment
Supply pressure too low
Clogged orifice
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
Lead Wire
Bonnet
O-Ring
O-Ring
Body Subassembly
Circuit
Board
Bottom Plug
Spacer
Pintle Spring