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CPI Canada Inc.
Acceptance Testing
4
Millenia / Indico 100 Series Service Manual Ch # 740904-08 Rev. F
Page 4-9
4.4.5
Dual Speed Starter Verification (Cont)
Step
Action
Result
Check
4.
Measure the rotor boost time.
Should agree with value in table
2-1.
5.
Use a strobe or reed tachometer and verify
that the tube(s) reach operating speed at end
of boost. Use the techniques in steps 1 and 3
to select low and high speed modes
respectively.
Low Speed
≥
3300 RPM.
High Speed
≥
9500 RPM.
6.
After a high speed prep, verify that the
dynamic brake is applied.
Will hear the X-ray tube slow
down to 60 Hz.
FOLLOW STEPS 7 TO 12 IF TUBE 2 IS USED (DUAL SPEED STARTER)
7.
Connect a current probe to the common lead
of tube 2.
Select 70 kVp, minimum mA, 50 mSec.
Press and hold the “PREP” button.
A 60 Hz waveform dropping to
less than half amplitude after
prep complete.
8.
Measure the rotor boost time.
Should agree with value in table
2-1.
9.
Select 100 kVp, maximum mA , 50 ms, small
focus.
Press and hold the “PREP” button.
A 180 Hz waveform dropping to
less than half amplitude after
prep complete.
10.
Measure the rotor boost time.
Should agree with value in table
2-1.
11.
Use a strobe or reed tachometer and verify
that the tube(s) reach operating speed at end
of boost. Use the techniques in steps 7 and 9
to select low and high speed modes
respectively.
Low Speed
≥
3300 RPM.
High Speed
≥
9500 RPM.
12.
After a high speed prep, verify that the
dynamic brake is applied.
Will hear the X-ray tube slow
down to 60 Hz.
13.
Switch OFF the console
N/A
4.5.0
ACCEPTANCE TESTS (KVP, TIME, MA AND MAS)
4.5.1 Generator
Rad
Tests
Measurement of kVp, mA, and time may be done via test points at the generator CPU board as per figure
4-3. These are direct feedback voltages and are scaled to represent the actual kVp and X-ray tube current
AS LONG AS THE GENERATOR IS CALIBRATED.
REFER TO NOTES ON PAGE 11.
NOTE:
TEST EQUIPMENT TOLERANCES MUST BE ALLOWED FOR IN THE MEASUREMENTS IN
THE FOLLOWING SECTIONS. LIMITS STATED ARE THE MAXIMUM ALLOWED LIMITS,
INCLUDING EQUIPMENT TOLERANCES AND MEASUREMENT ERROR.