20 Original Instructions Sentry Equipment Corp
Appendix B:
Other Samplers
Sequence of Operations
Model B1
1. Start motor in purge direction, start purge timer
2. Purge time expires
3. Stop motor, start delay timer
4. Delay time expires
5. Start motor in sample direction, start sample timer
6. Sample time expires
7. Stop motor, start cycle timer
8. Cycle time expires
9. Go to step 1
Model D2
1. Energize solenoid, air cylinder rotates sample tube up, motor starts turning the auger, start sample timer
2. Sample time expires
3. Solenoid de-energized, air cylinder rotates sample tube down, start auger purge timer
4. Auger purge time expires
5. Stop motor, start cycle timer
6. Cycle time expires
7. Go to step 1
Model GA
1. Energize solenoid, air cylinder moves head across the ow to location 2, start cycle timer
2. Cycle time expires
3. Solenoid de-energized, air cylinder moves head across the ow to location 1, start cycle timer
4. Cycle time expires
5. Go to step 1
Model ISOLOK®
1. Energize solenoid, air cylinder extends sampler, start sample timer
2. Sample time expires
3. Solenoid de-energized, air cylinder retracts sampler, start cycle timer
4. Cycle time expires
5. Go to step 1