Universal Unimatic 325D Schematics

OPERATORS MANUAL

AND

INSTALLATION AND SERVICE MANUAL

8000- 3488

UNIVERSAL

UNI-MATIC 325D GENERATOR

MODEL NO. 3488/3550

DEL MEDICAL IMAGING CORPORATION

A Del Global Technologies Company

50B NORTH GARY AVENUE

ROSELLE, IL 60172

CUSTOMER SERVICE (847) 288-7000

TECHNICAL SUPPORT (847) 288-7032

FAX (847) 288-7011

THIS DOCUMENT CONTAINS

INSTALLATION, ADJUSTMENT AND

MAINTENANCE INFORMATION

Manual Part Number: 8000-3488 Rev. D Release Date: 9-26-01

DHHS COMPLIANCE The 3488 Radiographic X-ray Generator and its associated accessories are certified components conforming to all applicable radiation performance standards as outlined by the Food and Drug administration, Code of Federal Regulation, Title 21, Subchapter J, at the Time of Manufacture.

EQUIPMENT COMPATIBILITY The Generator is a certifiable, UL listed component for use in a diagnostic x-ray system. It is designed for use with a tubestand and table which is not in itself a listed component.

TUBE LISTING Varian/EIMAC Tubes Toshiba Tubes Varian Rad 8 UX51H/39 UX53H/42 Varian Rad 74 UX52H/39

UX51H/42 UX52H/42 COMPATIBILITY LISTING Tables

Tubestands Wallstands EV100 5480 5062 P 3306B VS-200 FTT 5472 5062 3307B 3546E/7E FTT / ITS 5470 6062 3308B 3546/7 5482 5070 6062 P 3309B

7062

Manufactured by a Company which is:

20VM

MEDICAL EQUIPMENT CLASSIFIED BY UNDERWRITERS LABORATORIES INC. WITH RESPECT TO ELECTRIC SHOCK, FIRE, AND MECHANICAL HAZARDS ONLY.

Universal UNI-MATIC 325D Model 3488

Anyone using this x-ray machine must know and understand the dangers of excessive radiation exposure. This equipment is sold with the understanding that since its proper use and application is in the hands of the operator and beyond the control of the manufacturer or his agents, that Universal Imaging disclaims all responsibility for any injury resulting from improper use and application of this equipment.

We at Universal Imaging are proud of our product and know your x-ray unit will provide many years of useful and enjoyable service. Thank-you for selecting our equipment.

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Universal UNI-MATIC 325D Model 3488

A. CONTROL FEATURES

DISPLAYS

- Indicates selected power values and time. In the event or a system problem, the mAs window will display error codes. Refer to the "Error Codes" section of this manual for details. SEE FIGURE 1-2 (A)

MAJOR kVp SELECTOR

- Adjusts kVp in approximately 10 kVp increments. Turning the selector clockwise will increase kVp. SEE FIGURE 1-2 (B)

MINOR kVp SELECTOR

- Adjusts kVp in approximately 1 to 2 kVp increments. Turning the selector clockwise will increase kV. SEE FIGURE 1-2 (C)

MILLIAMPERE SELECTOR

Provides selection of the tube current (mA) and focal spot size. SEE FIGURE 1-2 (D)

RADIOGRAPHIC SECONDS TIME SELECTOR - Provides 23 step time selection from .008 to 6 seconds(60 Hertz) or .010 to 7.2 seconds(50 Hertz). Turning the knob clockwise increases the exposure time. SEE FIGURE 1-2 (E)

PREP BUTTON

-initiates rotation of the anode and boosts the tube filament current from the standby level to the exposure level. SEE FIGURE 1-2 (F)

EXPOSURE SWITCH

-When depressed, initiates the exposure sequence. If depressed without pressing the prep switch it will initiate the prep cycle as shown above, then, at the end of prep it will start the exposure cycle. SEE FIGURE 1-2 (G)

BUCKY SWITCH

- Allows selection of either the wall bucky, table bucky,or no bucky. SEE FIGURE 1-2 (H)

KVp DISPLAY

– Provides a preexposure reading of the actual kVp which will occur during the subsequent exposure. This reading is compensated for each mA selection. For this reason it is important to set the mA selector (D) first. SEE FIGURE 1-2 (A)

mAs DISPLAY

- Provides a pre-exposure reading of the actual mAs which will occur during the subsequent exposure.

TIME DISPLAY

- Provides a preexposure reading of the actual duration of time which will occur with the subsequent exposure.

LINE VOLTAGE COMPENSATOR

provides adjustment for voltage variations in the power line. Rotate the selector until the high and low line indicators are out. SEE FIGURE 1-3 (K)

HIGH LINE AND LOW LINE

- Indicates power line voltage. Either lamp illuminated will indicate the need to adjust the "Line Voltage Compensator, "K" until the effected condition is eliminated. Do not attempt to make Xray exposures if either a "High Line" or a "Low Line" condition exists. If the line voltage compensator cannot bring the generator into the proper operating range, discontinue use of the system and notify the authorized service organization in your area.

ON/OFF CIRCUIT BREAKER -

Controls power to system, and provides additional over current protection. SEE FIGURE 1-3 (L)

CAUTION

DO NOT OPERATE ANY SELECTOR SWITCHES DURING EXPOSURE

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Universal UNI-MATIC 325D Model 3488

I

UNI-MATIC 325D CONTROL

Figure 1-2

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Universal UNI-MATIC 325D Model 3488

UNI-MATIC CONTROL

UNI-MATIC 325D Model 3488 Page

Figure 1-3

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Universal UNI-MATIC 325D Model 3488

B. HOW TO MAKE AN X-RAY EXPOSURE

NOTE

It is advisable to turn the system on prior to processing the patient for the x-ray examination. This will allow sufficient warm-up time to allow the circuitry to stabilize.

1. Turn the system ON and check the line voltage by looking at the two line led indicators on the front panel (I) Adjust the line voltage compensator selector (K) until both leds are out.

2. In order to prevent tube damage due to thermal shock, preheat the tube anode by perform the following procedure if the system has not been energized for eight hours or if the unit has been off for longer than two hours and the technique to be used requires high mA, high kVp and long times. Verify that the preheat technique factors are below the maximum limits of the load curve of the xray tube on this system.

Make first three exposures waiting approximately 30 seconds between exposures at: 75 kVp 200 mA 1 second(60 Hertz) or 0.9 seconds(50 Hertz) wait 60 seconds, then take 1 exposure at:

85 kVp 200mA 1/2 second(60 Hertz) or

0.48 seconds(50 Hertz) wait 60 seconds, then take the last exposure at:

100 kVp 200 mA 1/4 second(60 Hertz) or

0.24 seconds(50 Hertz)

3. Select the mA desired (D), which must always be selected prior to kVp.

CAUTION

Do not exceed the x-ray tube rating in selection of technique factors. Refer to the x-ray tube rating chart that is supplied with the tube.

4. Select the kVp desired by observing the kVp meter and adjusting the Major and Minor kVp selectors.

5. Select the exposure time desired (E)

6. Depress the prep button (F) to boost the tube filament current and initiate tube anode rotation. These actions require approximately 1 second.

7. Depress the exposure button (G) and hold. A audable alream and X-Ray lamp indicator will signify the actual length of the exposure.

NOTE

It is permissible to depress the exposure button only, A one second time delay is built into the circuit.

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Universal UNI-MATIC 325D Model 3488

C. TECHNICAL INFORMATION

Usable Range of Operation: mA 50S, 100S, 150L, 200L, 300L kVp 40 - 125 in two kVp steps

Maximum Unit Rating: 300 mA @ 125 kVp

Rated Line Voltage: 240 VAC 60 Hz 240 VAC 50 Hz

Maximum Line Current at Rated Line Voltage:

140 Amps(60 Hertz) or 168 Amps(50 Hertz)

Technique Factors Resulting in Maximum Line Current:

300 mA @ 125 kVp

Maximum Line Regulation: VN - VL x 100 =5% VL ( @ 300 mA and 125 kVp)

VN -"No Load" Line voltage VL - Line Voltage under full load

Duty Cycle 100 mA @ 125 kVp 4% 200 mA @ 125 kVp 2% 300 mA @ 125 kVp 1%

MAXIMUM DEVIATION The maximum deviation given here for individual control settings are broad and do not reflect on the ability of the x-ray unit to conform with the Reproducibility

and Linearity requirements of the Bureau of Radiological Health.

KILOVOLTS +/- 10% of the full scale value within a range of 40-125 kVp. The basis upon wh ich the maximum deviation of kVp as stated is a calibrated high voltage bleeder unit such as the Machlett Dynalyzer.

MILLIAMPERE +/- 20% of selected mA within a kVp range of 50-125 kVp. +/- 20% of selected mA within a kVp range of 40-49.9 kVp. The measurement basis upon which the maximum deviations of mA are stated is a D.C. mA meter calibrated against a laboratory standard meter, in series with the x-ray tube.

TIMER +/- 1 Pulse for time settings of 0.008 - 0.10 second range(60 Hertz) or 0.010(50 Hertz)

+/- 15% Pulse for time settings of 0.15 - 6 seconds(60 Hertz) or 0.12 - 7.2 seconds (50 Hertz)

The measurement basis upon which the maximum deviations of exposure time is stated are half cycle impulses of a 60 or 50 Hertz power line measured at the primary winding input to the high voltage transformer or in the secondary circuit by means of a high voltage bleeder unit and an oscilloscope.

mAs DISPLAY The maximum deviation of mAs from the pre-indicated value shall not exceed +/-35%

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Universal UNI-MATIC 325D Model 3488

D. PREVENTIVE MAINTENANCE

In order to assure continued safe performance of the equipment and compliance with applicable Federal and State regulations, the following Preventative Maintenance Program must be adhered to:

1. SERVICE PERSONNEL Effective preventative maintenance requires the use of specifically trained and experienced medical x-ray apparatus service personnel. It is the user's responsibility to select personnel who are so qualified, or to consult with the factory in the event recommendations are required.

2. FREQUENCY Inspection and required service should be performed within 30 days after installation and every 6 months thereafter.

C. REQUIRED MAINTENANCE

1. CALIBRATION Verify the accuracy of kVp, mA, time and calibrate as necessary according to the instructions in Section II.

2. CONTACTORS AND RELAYS Inspect electromechanical contactors and relays for pitting, poor contact, loose or missing parts. Replace if necessary.

3. HIGH VOLTAGE TRANSFORMER a. Check transformer oil level. Proper

oil level should be within 1/2" to 3/4" below the bottom side of the cover. To replenish transformer oil, fill with Diala-Ax oil only.

b. Check for clean ,tight connections for the

primary cables. Clean and tighten as necessary.

4. HIGH VOLTAGE CABLES Inspect high voltage cable bushings at the transformer and rotating anode tube for signs of carbonization, tracking or moisture.

5. AUDIBLE & VISUAL EXPOSURE INDICATORS Confirm that the audible indicator which indicates of an x-ray exposure and the visual indicator which indicates the production of xrays, are functioning correctly.

6. INSPECT AND TEST DIALS AND KNOBS Inspect all knobs on the control to be sure that the pointer is indicating to the proper value, and is secure to the shaft.

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Universal UNI-MATIC 325D Model 3488

PERIODIC MAINTENANCE RECORD

Model: ____________________

Serial Number: _________________________________

Date of Original Installation: ______________________

IMPORTANT: This document should remain with the equipment at all times.

Record satisfactory accomplishment of required maintenance activity below. (See Maintenance Schedule for Radiation Safety of X-ray Apparatus ) .

Date Performed

Check if Tube Replacement

Qualified Organization Performing Service: Name and Address

Signature of Tester

Only

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Universal Unimatic 325D Schematics

Specifications and Main Features

Frequently Asked Questions

User Manual

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