Special Overlays; Special Overlay - Honeywell VXP System Maintenance Manual

Maintenance
• Enter 900 in the BAL RPM: window by highlighting the existing entry on the
display with the stylus, and then typing in the number using the keypad.
• Select MANUAL STOP in the pull down window.
11. Click on the Start button.
12. After a few seconds, the RPM in the upper left corner of the Bal Meas Only window
should read approximately 900 RPM.
NOTE: If you cannot adjust the distance or alignment to obtain 900 RPM, there may be a
problem with the FasTrak. Return it to Chadwick-Helmuth for adjustment.
13. Click on the Stop button to end the test.
Night Mode Test
This test should be run in a room that can be darkened to simulate night operations.
1. Replace the FasTrak cable (13279) with the test cable shown in Table 4-1 (P/N
12700). Set the switch on the test cable to "DAY MODE" operation.
2. Keep all settings on the calibrator and Balance Measurement Only screen as they
were for the previous FasTrak test. See step 9.
3. Click on the Start button.
4. To simulate night operation, turn off all lights in room, or enclose the test setup
within a darkened enclosure, such as a large box. The RPM should drop to zero when
the area is dark enough.
5. Set the switch on the 12700 test cable to "NIGHT MODE."
6. After a few seconds, the RPM should rise again to approximately 900.
7. Click on the Stop button to end the test.

4.3.7.1 Special Overlays

The figure below can be used to construct the special overlays needed for the FasTrak test. Copy
the overlay, and cut the circle to fit the strobe disk of the Model 11A Calibrator.
4-12 Honeywell
Figure 4-7. Special Overlay