Condec Source 3000 - Manual (Page 9)

Maintenance 5
3.0 Maintenance
3.1 Troubleshooting
3.2 Maintenance Procedures
This section outlines the mechanical repair procedures for the Source 3000 pressure source. The repair
procedures cover the major components and subassemblies which are critical to the proper functioning of the
calibrators and that will likely need periodic maintenance over the life of the unit. Only those persons who are
formally trained as skilled technicians should attempt to repair these units. All relevant safety precautions should
be observed due to the presence of high-pressure cylinders.
3.2.1 Front Panel Removal
Tools required: Phillips screwdriver
1. Loosen and remove the ten screws (PN 60837) that secure the panel assembly to the enclosure.
2. Lift the panel by first grasping the regulator knob and Port 1, then grasping under the panel edges.
Ensure that the flexible pressure cable does not catch or snag.
3. Gently set the panel assembly on a bench top. It can be rested on the panel bottom and regulator edge
with the panel tilted at an angle from its vertical.
3.2.2 Nitrogen Cylinder Assembly Removal (PN 65622)
Condec strongly recommends that the internal nitrogen supply cylinder be pressure-tested and re-certified every
five years from date cylinder was manufactured per U.S. DOT. 3AL Regulation, Title 49 CFR, parts 173 and 178.
Tools required: 7/16" wrench
Phillips screwdriver
1-1/8" wrench
3/8" wrench
Procedure:
1. Vent any remaining gas from the cylinder to atmosphere.
2. Remove front panel from its enclosure as described in Section 3.2.1 and carefully set on a bench top.
3. Using a 7/16" wrench, remove flexible tubing (PN 65384) from the cylinder elbow.
4. Remove the 4 mounting nuts and 2 clamps for the cylinder.
5. Remove the cylinder assembly.
6. If installing a new cylinder, remove the fitting/elbow assembly and Teflon seal and inspect for any
damage. If there is no damage, reuse these items on the new cylinder.
Symptom Problem Remedy
Customers electronic standard display
slowly decreases over time Leak in system Check all compression and pipe fittings
with soap solution
Electronic standard display does not
respond when Vernier knob is turned No Vernier control Readjust isolation valves on Orion;
replace O-ring on Vernier piston
Electronic standard display increases or
decreases when
PRESSURE or VENT
valves are closed
No Pressure or Vent control Replace valve seats or O-rings in valves;
check valve needles
Gas escapes when external supply
pressure is bled N
2
cylinder will not remain charged Remove inlet check valve; clean or
replace
Table 3-1. Source 3000 Troubleshooting