Oven_Modification_Questions_And_Answers_apr-17.docx
DOCX document 15 KB Posted
- Attached to
- Oven Control System Federal contract opportunity
- Solicitation number
- FA822417T0007
About this file
Here are responses to a number of questions raised by interested parties.
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| 20170503_091131.jpg | JPG image | |
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| FA822417T0007__COMBINED_SYNOPSIS_SOLICITATION.docx | DOCX document | |
| PWS_Complex_Oven_Control_System.doc | DOC document |
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Text version
Questions and Answers:
1. Are oven electrical schematics available to review prior to bid closure? Not at this time. It is a Wisconsin Oven Model #SB-444 with:
a. 12 + 1 thermocouples;
b. 8 analog input;
c. 2 analog output;
d. 32 discrete out; and
e. 16 discrete in.
| 2. | How many thermocouples will be measured and recorded? 13 (12 part & 1 oven) |
| a. What type? Do we need to provide these? Type J standard plug | |
| b. What type of jack fields are available? Do we need to provide these? 12 plug |
jack, yes, if condition and/or level of work warrants changing
c. Do specific thermocouples need to be tracked for usage? TC’s assigned to part during cure
| 3. | How many vacuum ports will be measured and recorded? 5 |
| a. Are transducers required? Do we need to provide these? Yes and yes | |
| b. How many solenoid valves per port? 2 (vacuum, vent, block) | |
| c. What type? (ex. 120VAC, 24VDC) Do we need to provide these? Bypass |
valves, lines and accumulator tank also required
4. Is Variable Vacuum Control required during recipe management? Yes
5. Please define the number of digital inputs and outputs required. As required for 12 TC and 5 vacuum lines (vacuum, vent, block), plus equipment startup and shutdown
| 6. | If plumbing or electrical re-configuration is required, will there be AF personnel available to assist? AF electrician available to route additional power to oven |
| a. Do we need to provide Electricians and Plumbers? Yes |
7. Is Dynamic Tuning or Superheating required? Dynamic tuning
8. What is the oven heat source and what type of control is required? (Ex. 4-20ma, 0-10VDC, on-off)
9. Please describe cooling system requirements. Manual vents
a. Is there a cooling damper? What control type? (Ex. 4-20ma, 0-10VDC, on-off) No
| 10. | Please provide set point requirements |
| a. Temperature min/max 75 min / 500 max | |
| b. Vacuum min/max 0 “Hg gauge min / 29 “Hg gauge max | |
| c. Cure cycle time min/max 1 hr min / 24 hr max |
11. Please provide all exceptions that require alarm activation High/low part temp, high/low vacuum, high oven temp,
| a. Are audible or visual alarms required? Visual |
| b. If so, how many? |
12. How many temperature probes are in the oven? 1
13. Will vacuum bag leak checks need to be performed automatically? No,
14. Any transient undocumented issues (example: circuit breaker tripping intermittently) No
15. When was the oven used last? 20-Apr-2017
16. Is the oven 100% functional? Yes
17. Describe any non-factory modifications to the oven? None
18. What is the delivery schedule? Negotiable until 1-Sep-17
19. Please provide a typical cure recipe. Heat part at 4 °F/min +/- 2 °F/min from 70 °F to 250 °F with a part delta not to exceed 30 °F. Hold for 2 hrs at 250 °F when minimum part TC is greater than 240 °F with a part delta not to exceed 20 °F. Cool at °4 F/min +/- 2 °F/min to less than 125 °F. Vacuum starts at 25 “Hg +/- 2 “Hg and held constant throughout the run.
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