Summit Industries 325E User manual

325E X-RAY GENERATOR
USER AND ASSEMBLER INFORMATION
For X-ray Control Model No.: F280
and X-ray High-voltage Generator Model No. A700
01496-000 Revision G
AUGUST 2005
SUMMIT INDUSTRIES, INC.
2901 W. Lawrence Avenue
Chicago, IL 60625
773-588-2444
www.Summitindustries.net

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
TEXT REVISION HISTORY FOR F285 MANUAL
REVISION ECR DESCRIPTION RELEASE DATE
E 4196 UPDATED COVER SHEET AND
SCHEMATICS AUGUST 2004
F 4484 ADDED ERROR CODES AND TUBE
PROTECT DIP SW. SETTINGS DUE
TO 02249-000 TIMER BOARD.
ADDED TEXT REVISION HISTORY
PAGE, AND UPDATED TOC
FEBRUARY 2005
G 4727 UPDATED TOC TO INCLUDE 02581
SERVICE GUIDE AUGUST 2005

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
TABLE OF CONTENTS
I. INTRODUCTION..................................................................................................2
II. USER INFORMATION .........................................................................................3
A. CONTROL FEATURES................................................................................3
B. RECOMMENDED OPERATING PROCEDURES ........................................6
C. MAINTENANCE ...........................................................................................7
D. TECHNICAL INFORMATION.......................................................................9
III. ASSEMBLER INFORMATION............................................................................11
A. CERTIFICATION OF COMPATIBILITY......................................................11
B. RADIATION PROTECTION .......................................................................11
C. ELECTRICAL POWER SUPPLY REQUIREMENTS..................................11
D. UNPACKING AND OPENING CONTROL..................................................12
E. PRELIMINARY ASSEMBLY AND TUBE PROTECT SELECTIONS..........14
F. PRELIMINARY ELECTRICAL CHECKS AND ADJUSTMENTS ................18
G. CALIBRATION............................................................................................20
H. FINAL COMPLIANCE TESTS....................................................................26
I. ANCHORING CONTROL CABINET TO THE FLOOR...............................28
J. SCHEMATICS
1. B127 --SCHEMATIC, 325 CONTROL CIRCUIT DIAGRAM..................29
2. 02249-002 -- COMPONENT LAYOUT FOR TIMER DRIVER PCBA .....30
3. B130-- SCHEMATIC, MOTOR START CRCT ......................................31
4. B131--PARTS LAYOUT FOR MOTOR START CRCT (A455) ............. 32
5. B132-- SCHEMATIC FOR KV COMP. PCB ASSY. (01204) .................33
6. B133--HIGH TENSION TRANSFORMER DIAGRAM (A700)............... 34
7. 02249-003--SCHEMATIC AND COMPONENT LAYOUTS …………….35
K. SERVICE GUIDE, SINGLE-PHASE GENERATORS (02581)...................36
1

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
2
I. INTRODUCTION
The equipment, which is described in this manual, will perform reliably when installed,
operated, and maintained in accordance with the instructions of this manual.
This equipment is sold with the understanding that the user assumes sole responsibility
for radiation safety and that the manufacturer does not accept any responsibility for the
following:
1. Equipment improperly installed.
2. Equipment improperly used.
3. Equipment improperly maintained or repaired.
4. Equipment, which has been modified or altered in any way.
5. Injury or damage to patient or other personnel for any of the above
causes.
We are proud of our products and are confident they will provide many years of useful
and enjoyable service.
Summit Industries Inc.

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
II. USER INFORMATION
This x-ray generator is both easy to use and very versatile. It consists of an x-ray
control and a high voltage generator (H.V. generator).
A. CONTROL FEATURES
Refer to photo on page 6 for location of the following controls and indicators:
Note: Refer to Section B, “Recommended Operating Procedure” for detailed
description of proper use of these controls and indicators.
A) Power “on” – “off” switch – Controls power to the system.
B) Power “on” light – Indicator light lights when power is “on”.
C) Bucky selector switch – Allows selection of either wall bucky, table bucky, or
no bucky.
D) Line check rocker switch – When depressed, this switch causes the kVp
meter (O) to indicate if the line voltage compensator (E) is adjusted properly.
E) Line voltage compensator – Allows operator to adjust input circuit of x-ray
control to match the line voltage easily and effectively.
F) Tube current (mA) selector switch – Rotary switch allows operator to select
the optimum tube current and focal spot for the desired technique.
G) Digital display – This display provides three very useful features:
1. Pre-exposure indication of mAs (the product of mA and exposure time).
2. Post-exposure indication of the number of x-ray pulses counted during
the previous exposure.
3. Error codes to indicate generator status or inappropriate selection.
Error Code Indicated Fault Corrective Action Required
E01 Tube Limits Exceeded Reduce kVp, mA or Time
E02 kVp too high (>128 kVp) Select 125 kVp or less
E03 kVp too low (<37 kVp) Select 40 kVp or more
E04 Invalid mA setting Reselect mA station
E06 Invalid Time Selection
or Leaking SCR Reselect Time station, call for service if error won’t clear.
We recommend that the above chart be kept available for easy reference.
3

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
H) X-ray exposure switch – Two level switch: Partial depression (PREP) causes
anode rotation and filament current boost. Full depression (EXPOSE)
initiates the production of x-rays.
I) Exposure time selector switch – Provides the operator capability to select any
one of 23 different exposure times.
J) Exposure interlock “ready” light – Indicator light lights when all exposure
interlocks are closed. (Collimator interlock, tube thermal protection, misc.
exposure interlock devices, etc.) When this light is “off”, exposures will not be
allowed.
K) Tube ratings exceeded light – Indicator light lights when internal electronic
circuitry detects that selected technique factors exceed the single exposure
ratings of the x-ray tube. Under these conditions, x-ray exposures are not
allowed.
L) Milliampere meter – Indicates actual tube current during an x-ray exposure.
Meter deflection is the visual indication of x-ray production.
M) kVp minor selector – Provides fine adjustment of peak tube potential (kVp).
N) kVp major selector – Provides coarse adjustment of peak tube potential
(kVp).
O) KILOVOLT meter – Pre-reading meter, which indicates selected peak tube
potential (kVp). This meter also serves as an indicator of line voltage
adjustment in conjunction with item (D) above.
4

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
M
L
N
K
J
O
A
I
F
G
B
H
C
D
E
5

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
B. RECOMMENDED OPERATING PROCEDURES
Note: It is important to turn the generator “on” at least 15 minutes before making
an exposure. This will provide sufficient “warm-up” time for the circuitry to
stabilize.
1. Turn the system “on” by slowly snapping the power switch (A) to the right.
Power “on” light (B) should light.
2. Check the line voltage by depressing “line check rocker switch” (D) while
observing the kVp meter (O). Rotate the knob of the “line voltage
compensator” (E) as necessary until the needle of the kVp meter falls within
darkened area of the scale marked “V”, (as near the center of the area as
possible.)
Note: If you are unable to position the needle within this area, it is an
indication that the line voltage is not correct and the equipment should
not be used. Either wait for line voltage to change or call for service.
3. Determine the desired technique factors Note: Do not exceed the x-ray
tube ratings. Refer to x-ray tube rating charts provided with the x-ray
tube. If the technique factors are set beyond the x-ray tube limits “E01”
should appear in the digital display window, preventing exposure.
Note: Proper warm-up of the anode must be done on a cold unit prior to
making exposures. The specific details may be found in “General
Information for Installing and Operating X-Ray Tubes”, that is included
with each tube shipped. The warm-up procedure tags are attached to
each unit. Basically this procedure will reduce the chance of tube
damage due to thermal shock.
4. Select the desired tube current. Selecting the 50 or 100 mA stations
automatically determine that the small Focal Spot will be used. The 150, 200,
and 300 mA stations are internally connected to the large F.S.
Note: Select the desired tube current (mA) prior to selecting the desired
peak tube potential (kVp).
If at any time, a different tube current is selected, it will be necessary to
reset the kVp selector switches.
5. Rotate the exposure time selector switch (I) to the desired time setting.
6

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
6. Observe the digital display (G) to confirm that the correct mAs has been
selected.
7. Select the desired peak tube potential (kVp) by observing the kVp meter (O)
while rotating the kVp selectors (M&N)
8. This generator is equipped with tube protect circuitry that compares the
selected technique factors to the “single exposure ratings” of the x-ray tube.
Exposures will only be allowed if the selected values are less than or equal to
the x-ray tube limits. Refer to the chart below for description of “E01” error.
9. If the x-ray system includes a bucky (wall or table or both) and it is desired to
use a bucky technique, select the appropriate bucky by depressing the bucky
selector switch. If a non-bucky technique is desired select the center “off”
position of the bucky selector switch.
10. This generator is also equipped with an indicator light identified as “exposure
interlocks ready” light, which monitors the status of all auxiliary exposure
interlock circuitry. When all interlocks are ready the light will light. If the light
is not “on”, x-ray exposures will not be allowed. Such interlocks might be SID
interlock switches, tube thermal protectors, collimator interlock, etc.
11. Depress the exposure switch approximately halfway. This action will cause
the rotating anode of the x-ray tube to accelerate to full speed and the
selected filament of the x-ray tube to heat up to its proper emission
temperature. Depress the exposure switch fully and hold. A beep tone will
indicate the termination of the exposure, and the mA meter deflection will
provide a visual indication of x-ray production.
Note: It is permissible to depress the exposure switch fully in one
motion. There will be however, a one second delay before x-ray
production begins.
After the exposure terminates, but while the exposure switch is still
depressed, the digital display will flash “on” and “off” indicating the number of
x-ray pulses produced. This is primarily a service feature provided for the x-
ray serviceman to verify proper operation.
12. Error codes and corrective action for digital display window.
Error Code Indicated Fault Corrective Action Required
E01 Tube Limits Exceeded Reduce kVp, mA or Time
E02 kVp too high (>128 kVp) Select 125 kVp or less
E03 kVp too low (<37 kVp) Select 40 kVp or more
E04 Invalid mA setting Reselect mA station
E06 Invalid Time Selection
or Leaking SCR Reselect Time station, call for service if error won’t clear.
7

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
C. MAINTENANCE
Periodic inspection and preventative maintenance of this equipment is necessary to
assure continued safe performance and compliance with applicable state and federal
regulations. The following maintenance program must be closely followed.
Q: Who should perform the service?
A: Service personnel specifically trained, experienced, and familiar with this type of
medical x-ray equipment.
Q: When and How often?
A: Appropriate inspection and service should be performed 30 days after installation
and every 6 months thereafter.
Q: Specifically, what must be inspected, tested and/or serviced?
A: Several things:
1. Verify that the knob on exposure time selector is mounted solidly and
indicates the proper value.
2. Verify that all push-button and rocker switches operate freely with no sticking
or hanging up.
3. Verify proper operation of all pilot lights.
4. Verify proper operation of audible and visual indicators of x-ray termination
and production respectively.
5. Verify the accuracy of exposure timer, tube current, and peak tube potential,
and adjust as necessary.
6. Perform reproducibility and linearity tests and verify compliance.
7. Inspect electro-mechanical contactor for pitting and/or burned contacts.
Replace if necessary.
8. Examine terminal connections of high voltage generator. All terminals should
be tight.
9. Examine oil level of H.V. generator and refill as necessary. There should be
approximately ½ to ¾” air space between the oil and the inside edge of the
generator cover.
10. Examine the plugs of the high voltage cables. They should be clean with no
signs of carbon tracking.
Note: This x-ray generator should not be altered or modified in any way
as such action may invalidate its regulatory compliance and void the
factory warranty.
8

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
D. TECHNICAL INFORMATION
Rated line voltage – 240 VAC, 60 Hz., single phase.
Range of line voltage regulation at max. line current = 1-5%
Maximum line current based on input voltage of 240 VAC -140A.
Technique factors that constitute the maximum line current – 300 mA @ 125 kVp.
Generator rating-
Output Current = 50-300mA.
Output Voltage = 40-125kVp.
Generator duty cycle-
100mA @ 125 kVp – 4%
200mA @ 125kVp – 2%
300mA @ 125kVp – 1%
Maximum Deviation
The following maximum deviation statements are broad and considered “worst case”
conditions.
Typical performance will normally be significantly better.
Peak Tube Potential (kVp)
The Maximum Deviation of the Peak Tube Potential during an exposure from its pre-
indicated value is +20% of the kVp meter’s full-scale value. The measurement basis
upon which the peak tube potential is defined is a calibrated high voltage divider unit
such as the Machlett Dynalyzer.
Tube Current
The Maximum Deviation of the tube current during an exposure from its pre-indicated
value is +10% of selected value within a kVp range of 50-125 kVp (inclusive), and +20%
of selected value within a kVp range of 40-50 kVp (exclusive). The measurement basis
upon which the tube current is defined is a calibrated D.C. milliammeter in series with
the x-ray tube.
9

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
Exposure Time
The maximum deviation of the measured exposure time from its pre-indicated values is
+1 pulse for selected times within the range of 1/120 – 1/10 sec.
+15% of selected times within the range of 3/20-6 sec.
The measurement basis upon which the exposure time is defined as the number of half
cycle impulses of the 60 Hz power line measured either at the primary of the high
voltage generator with an oscilloscope or in the secondary of the high voltage generator
by means of a high voltage divider unit and an oscilloscope.
Tube Current-Exposure Time Product
The digital display of mAs provided is not a primary indication of technique factors. It is
intended solely as an auxiliary indication to verify the product of the primary control
settings: tube current and exposure time. As such, a statement of maximum deviation
is not provided.
10

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
III. ASSEMBLER INFORMATION
A. CERTIFICATION OF COMPATIBILITY
The manufacturer certifies that it’s certified x-ray controls and high voltage generators
are compatible with all certified x-ray tubes concerning compliance with 21CFR,
Chapter I, Sub-chapter J, only if the ratings of the controls, generators and tubes are
strictly observed and the control is calibrated within the applicable published limits.
Our certified controls and generators, when combined with other certified components,
will not affect the compliance of these components when these components are
installed, connected and adjusted in accordance with the applicable manufacturer’s
instructions and specifications.
Note: It is the assembler’s responsibility to verify compatibility of all components
assembled as parts of the x-ray system. Refer to compatibility statements
published by the component manufacturer for this specific information.
B. RADIATION PROTECTION
Most states and local governments have regulations, which specify minimum safety
requirements for radiation protection. Consult your local regulations for specific
requirements.
C. ELECTRICAL POWER SUPPLY REQUIREMENTS
The information provided below is taken from NEMA standards, Minimum Power Supply
Requirements for X-Ray Machines, and National Electric Code.
Equipment Category – 300mA at 125kVp, single phase.
Nominal Line Voltage – 240 VAC., 60 Hz., single phase.
Note: Alternate line voltages, which will provide normal operation, are 208-277
VAC.
Maximum Momentary Line Current – 140 amperes (at 240 VAC)
Note: Maximum momentary line current at alternate line voltages can be
determined using the following formula:
140x240
I2= V2
where V2represents the alternate line voltage, and I2represents the maximum line
current at the alternate line voltage, “V2”.
11

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
Line Voltage Regulation – Not to exceed 5% at maximum line current.
Percent line voltage regulation = VN– VL
V
L X 100
where VNrepresents the line voltage under “no load” conditions, and VLrepresents line
voltage under “full load” conditions.
Minimum Over Current Protection Rating – 50% of maximum line current rating or
greater. Assuming maximum line current to be 140 amps, this value would be 70
amperes or greater.
Wire Size from Power Transformer to Disconnect Switch – for 50 feet use #2AWG; for
100 feet use #00AWG; for 200 feet use 250mcm
(mcm – thousand circular mils.)
Connection to Supply Circuit (taken from N.F.P.A. 70-1984)
A disconnecting means of adequate capacity for at least 50% of the input required for
the momentary rating shall be provided in the supply circuit. The disconnecting means
shall be operable from a location readily accessible from the x-ray control. Underwriters
Laboratories also requires that this disconnecting means be mounted on either the wall
behind the x-ray control or the wall directly adjacent to it.
D. UNPACKING AND OPENING CONTROL
1. Open all cartons carefully and examine contents. If damage is found notify the
freight company immediately to file claim. Do not dispose of cartons or packing
materials until installation is complete, and any damage claims have been
settled.
2. Verify that the oil level in the H.V. generator is approximately ½” to ¾” below the
underside of the cover. Refill with “Shell Diala oil AX” or equivalent as
necessary.
3. Once the H.V. generator is in its final location, loosen the screw on the vent plug
to allow for oil expansion. Cover the vent plug and flange with one of the loose
fitting plastic covers provided with the H.V. generator to prevent contaminants
from entering the oil.
4. To open control for service, loosen the lockdown screws (one on each side) and
tilt the control lid assembly forward.
12

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
5. From the inside of the control, remove the two thumbscrews and washers from
front panel being careful not to drop them into the cabinet.
13

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
6. Grasp the “lift tab” at the center of the front panel (near the top) and lift upwards
approximately 1” to unhook the bottom of the front panel from the base of the
cabinet. While holding the panel up, push out the bottom and lower it to the floor.
Then tilt the lid back to its normal position so that the front panel can be
removed.
7. See photo below for parts layout of electrical chassis assembly.
E. PRELIMINARY ASSEMBLY
1. Before starting the generator installation, it should be noted that an alternate set
of holes are provided in the side of the control cabinet to allow cable entry/exit
from either the back (as shipped) or the left side. If the location of the control
requires cable mounting on the side, remove the hole plugs and transfer the
cable clamps and cables from the back of the control to the side. Then reinstall
the hole plugs into the set of holes in the back of the control.
14

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
2. Connect x-ray tube
a) High voltage cables (HV cables) – The high voltage generator requires the
use of H.V. cables constructed with federal terminals. Note: Use extreme
care when handling the H.V. cables to avoid damaging the plug or
terminal pins.
Be sure that “Anode” of H.V. generator connects to “Anode” of x-ray tube, and
“Cathode” to “”Cathode”. H.V. cable terminals must be thoroughly cleaned
and then coated with a thick coating of Vapor Proofing Compount (normally
provided with the x-ray tube) prior to insertion into the x-ray tube or H.V.
generator receptacles.
Insert the H.V. cable terminals into the appropriate receptacle and screw the
cable nut as tightly as possible by hand – do not use tools for tightening.
b) Stator cable – This x-ray control will accept either a 3 or 5 wire tube stator
cable. The terminals of the x-ray control are on TB3 and are marked 07, 08,
09, T5, and T6.
COLOR CODE FOR STATOR CABLE
TERMINAL
MARKINGS
OF (TB3)
CONNECTIONS EUREKA/
VARIAN
TUBES
MACHLETT
TUBES SUMMIT and TOSHIBA
TUBES
07 RUN WDG. OF TUBE STATOR BLACK BLACK BLACK
08 START WDG. OF TUBE STATOR RED GREEN RED
09 COM. LEAD OF TUBE STATOR WHITE WHITE WHITE
T5 *THERMAL CUTOUT SWITCH
(OPTIONAL) ORANGE/ BROWN ---- YELLOW
T6 *THERMAL CUTOUT SWITCH
(OPTIONAL) BROWN/ ORANGE ---- BLUE
*If tube has thermal cutout switch, remove jumper across T5 and T6 and
connect leads as indicated. If tube does not have thermal cutout switch,
terminals T5 and T6 must be jumpered together. (Control is shipped with
this jumper installed.)
15

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
3. Connect high voltage generator to control –
a) The 25’ primary cable for the H.V. generator is connected to the control at the
factory. The loose end, marked P1, P2, and GND, should be connected to
the corresponding terminals of the H.V. generator.
b) The 25’ filament supply cable for the H.V. generator is connected to the
control at the factory. The loose ends, marked XC, XS, XL, and MI are to be
connected to the corresponding terminals of the H.V. generator.
4. Connect collimator and/or electric locks (if applicable) –
This x-ray control is provided with fused power supplies rated 24 VACm 10Amp
max. (terminals “C1 and “C2” of TB2) and 24 VDC 8Amp max. (terminal “DC+”
and “DC-“ of TB2).
5. Exposure interlock circuits –
This x-ray control provides pairs of terminals which can be used to connect
auxiliary interlock circuitry which inhibit x-ray exposures. These terminal pairs
are marked T6/T7, and T7/F2 of TB3. Removable jumper clips are connected
across these terminals at the factory. If it is necessary to connect an interlock
switch into the exposure circuit, remove one of these jumpers and connect the
interlock leads across the opened terminals. Note: Any interlock switch to be
used must be rated 125 VAC, 2 Amps minimum.
6. Bucky connections –
This control provides terminals which can be used to operate one or two buckys.
The terminals are designated B1W, B2W, B3W, and B4W for “wall” buckys; and
B1T, B2T, B3T, and B4T for “table” buckys. Since several types of buckys may
be used, be sure to connect bucky to appropriate terminals as indicated below.
All bucky’s must be configured for 115 VAC operation.
3B2BB1
CONTROL TERM STRIP "TB3"
GND
23B1B
BRN.
BLUE
4B
WHITE
RED
GRN/YEL
B3
BLACK
SUMMIT BUCKY "J500"
B4B3B21B
CONTROL TB3
B
1B 2B3 4B
14 X 36
MIDWEST
B
B8
LIEBEL-FLARSHIEM 8000
6BBBB234B1BBB234B1
CONTROL TB3
BB123BB4 CONTROL TB3 B1BB2 GROUND4
L-F PAR SPEED
(PRE-1989) AND MIDWEST 7440
B86B4B
Note: Remove jumper clip across B1T and B2T on TB3 when connecting “table”
bucky, or B1W and B2W on TB3 when connecting “wall” bucky.
16

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
7. Auxilary exposure switch –
Terminals have been provided in the control for connecting an auxilary exposure
switch. They are on TB2 and are marked S1, s2, and S3. Refer to control circuit
schematic for connection details.
8. Power supply –
A 13 ft. line cable marked L1, L2, and GND is provided. One end is connected to
the control at the factory. The other end is to be connected to the disconnect
switch to the appropriate terminals. The disconnect switch should be “off” before
making connections. Be sure to connect the green “GND” lead to a “GOOD”
ground.
9. Tube Protect DIP Switch Selection –
The 02249-000 timer board has a DIP switch (S1) to select the tube protect limits
for the x-tube type used at this installation. The new U1 chip will be labeled with
generator type (325 or 360), line frequency (50 or 60 Hz), and tube manufacturer
(Summit/Toshiba or Varian/Eureka). Verify the chip type installed is appropriate
for the generator, line frequency and tube type at this site. DIP SW1 positions
will select the specific type of x-ray tube insert at this site (see table below). For
the DIP switch “OFF” is to the left, “ON” is to the right. Any change to the DIP S1
settings must be done while the generator is turned OFF.
DIP SW (S1) Settings
Tube Mfg, Insert, (Focal Spot) S1-1 S1-2 S1-3
Toshiba E7239 (1.0/2.0) OFF OFF inactive
Toshiba E7242 (0.6/1.5) OFF ON inactive
Toshiba E7252 (0.6/1.2) ON OFF inactive
Toshiba E7813 (1.0/2.0) ON ON inactive
Varian Rad 8 (1.0/2.0) OFF OFF inactive
Varian Rad 74 (0.6/1.5) OFF ON inactive
Varian Rad 14 (0.6/1.2) ON OFF inactive
Varian Rad 13 (1.0/2.0) ON ON inactive
17

325E X-Ray Generator
Summit Industries, Inc. Model Numbers F280 / A700
F. Preliminary Electrical Checks and Adjustments
1. Line voltage adjustments –
Terminals in the control on TBI are provided for coarse adjustments of line
voltage. Measure the line voltage at the disconnect switch and relocate wire
marked LVA to the corresponding terminal. See below for details.
If line voltage measures 190-203V connect LVA lead to term “198”
If line voltage measures 204-219V connect LVA lead to term “212”
If line voltage measures 220-233V connect LVA lead to term “228”
If line voltage measures 234-249V connect LVA lead to term “242”
If line voltage measures 250-263V connect LVA lead to term “258”
If line voltage measures 264-280V connect LVA lead to term “272”
2. Preset all selector switches –
Prior to turning “on” power, set each selector switch as follows:
Power “on-off” - “off”
Bucky switch - “off”
kVp major and minor - fully counterclockwise
Line voltage compensator - approximately halfway
mA selector - 150L
Time selector - 1/120 sec.
3. Disconnect leads marked P1 and P2 from H.V. generator and insulate with
electrical tape. This will prevent accidental production of x-rays during initial
check-out. Switch the disconnect switch “on” and then switch the control’s “on-
off” switch “on”.
Observe the following:
-Power “on” light is lit.
-kVp meter indicates approximately 20 kVp.
-mA meter indicates zero.
-Digital display indicates E03 (kVp too low).
-Tube ratings exceeded light “lit”.
-Exposure ready light lit.
18