8. Maintenance and Repair
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PNEG-2175CE
CE Compliant Sampler - Model GCE 45 and GCE 90
Mechanical Repair Procedures
Drive Chain Adjustment
The drive chain will need adjustment periodically to maintain proper tension. The chain is attached to the
sample pelican drive nose by means of two eye bolts. Loosen, adjust and re-tighten the eye bolt nuts to
increase or decrease chain tension. The chain only needs to be tight enough to prevent any sag or slack.
As the chain wears it will stretch to a point where the adjustment of the eye bolts will no longer permit
further tightening. Shorten the chain by removing a link if necessary.
Limit Switch Adjustment
Loosen and adjust the limit switch arm if required. The limit switches trip on the ends of the slide plate of
the sampler and signal the control to remove power from the motor. They should trip before the sample
pelican completes its traverse. When a limit switch trips the sample pelican should gently coast to a stop
under the dust seal and up against the bumper.
Sample Cutter Blade Replacement
When following the instructions below, refer to the applicable drawing of the sampler. Reference the
drawings of the samplers
and the certified drawing(s).
1. Shut off and lock out all power (electrical, pneumatic and hydraulic).
2. Shut down conveying line.
3. Open the large inspection door on the sampler housing and the seal door over the sample cutter.
4. Remove the 1/4''-20 UNC hex head bolts fastening the sample cutter to the sample pelican.
5. Using a utility knife, cut the caulking seal around the bottom of the cutter blade and remove.
6. Install the new cutter blade on the sample pelican.
7. Re-install the 1/4''-20 UNC hex head bolts fastening the sample cutter to the sample pelican.
8. Re-caulk the joint between the cutter blade and the sample pelican to ensure a tight seal.
9. Re-install the inspection cover on the housing.
10. Restore power to the sampler and operate it through several collection cycles.
Sample Cutter Seals Replacement
When following the instructions below, refer to the applicable drawing of the sampler. Reference the
drawings of the samplers
and the certified drawing(s).
1. Shut off and lock out all power (electrical, pneumatic and hydraulic).
2. Shut down conveying line.
3. Open the large inspection door on the sampler housing and the seal door over the sample cutter.
4. Remove the 5/16''-18 UNC wing nuts fastening the sample cutter seal brackets to the doors. Avoid
dropping the assemblies inside the sampler.
5. Wrap the new seals around the seal brackets and re-install.
6. Check to see that the cutter fits snugly under the pelican seals.
7. Restore power to the sampler and operate it through several collection cycles.
