Remove Sampler; Maintenance; Plunger Seal Replacement - Sentry ISOLOK SAL-DBB Installation, Operation & Maintenance Manual

8. Verify poppet is in . The red band on the position indicator should be hidden .
9. Insert actuator lock pins .
10. OPEN the bleed valve .
11. Installation is complete . The sampler is in PARK position .

Remove Sampler

1. Place door switch on controller in OFF position .
2. CLOSE the bleed valve
3. Verify that the spacer is extended . The red band on the position indicator should be hidden .
4. Retract lock pins .
5. Verify that the spacer is retracted . The red band on the position indicator should be visible .
6. Remove block valve lockout pin .
7. CLOSE the block valve .
8. Replace block valve lockout pin .
9. OPEN bleed valve . (Note: A momentary pressure relief may occur when the bleed valve is opened .)
10. Close air supply valve to the controller .
11. Remove sampler .
12. Install block-off plate .
13. Removal is complete .

Maintenance

Plunger Seal Replacement

Decompression of seals may occur as plunger is removed . Protect personnel from exposure to sample material trapped
between plunger seals .
 NOTE:
When disassembling the plunger assembly, note the proper orientation of the assembly components .
1. Using compressed air, apply pressure to port A to extend the plunger out of the front spacer of the sampler just
far enough to facilitate removal . Extending the plunger fully makes the hex socket in the rear piston rod difficult to
engage .
2. Remove ½˝ pipe plug in the rear cylinder head .
3. Use an extended reach 3/8˝ tee handle hex wrench to engage the
hex socket in the rear of the piston rod .
4. Use a 3/8˝ hex wrench to loosen the plunger spindle at the front of
the sampler .
10 Sentry Equipment Corp