American Diagnostic Corporation (ADC) Diagnostix 922 - Manual (Page 3)

Parts and Assembly
This booklet contains operating and maintenance information
for the DIAGNOSTIX ™ 922 series desktop mercurial blood
pressure instrument. Please read and retain.
Your DIAGNOSTIX ™ 922 consists of a main unit with 4mm
calibrated unbreakable plastic cartridge tube, inflation sys-
tem (which includes the ADCUFF ™ nylon cuff with Size
Guide ™ marking system, latex-free inflation bladder, bulb,
and the ADFLOW ™ valve), luer connector, and operating in-
structions.
Connecting the Inflation System to Manometer
Remove the red cap which seals the reservoir containing mer-
cury. Attach the free end of reservoir tube securely to air inlet.
Save red safety cap for later use. When transporting mercury
instrument we recommend replacing the red safety cap.
Please note: It is normal for negligible amounts of residual
mercury droplets to accumulate around the air inlet beneath
the red safety cap during transportation.
Warning: Before transporting this instrument, mercury must be stored in the tank and the reservoir lock
MUST be switched to the off position to prevent mercury spills.
Operating Instructions
Your DIAGNOSTIX ™ 922 Desktop Mercury Sphygmomanometer incorporates a special safety feature that locks the
mercury within the reservoir during storage, transport, or maintenance.
To Operate the 922: To release the mercury from the reservoir, move the locking lever to the left. Mercury will flow
up into the plastic cartridge tube and rest at the “0” mark. If the mercury doesn’t rise within the tube, tilt the entire
unit 45° to the left. If mercury fails to rise, or doesn’t reach the “0” level, have unit serviced.
To Lock Mercury within the Reservoir: Tilt the entire unit back 45° towards the reservoir to permit mercury to
flow out of cartridge tube and into reservoir. When cartridge tube is completely emptied of ALL mercury (and
while it is still tilted 45°), move locking lever to the right. Mercury should be locked within the reservoir during
maintenance or transport.
PLEASE NOTE: MERCURY SHOULD BE SECURED WITHIN THE RESERVOIR BEFORE CLOSING LID, DURING
TRANSPORT, OR WHEN SERVICING THE CARTRIDGE TUBE, DIAPHRAGMS, OR FILTERS. NEVER DISAS-
SEMBLE UNIT UNLESS MERCURY IS FIRST LOCKED WITHIN RESERVOIR.
MEASUREMENT PROCEDURE
1. Patient Position
The patient should sit or lie comfortably. The arm should be fully sup-
ported on a flat surface at heart level. (If the arm’s position varies, or is
not level with the heart, measurement values obtained will not be consis-
tent with the patient’s true blood pressure.) Observer should view
manometer in a direct line and at eye level to avoid “parallax error.”
2. Apply the cuff
ADCUFF ™ nylon cuffs, with proprietary Size Guide ™ marking system,
are specially designed to promote the precise, accurate determination
of blood pressure. Index and range markings ensure use of the correct cuff size. The artery mark indicates proper cuff
positioning. Place the cuff over the bare upper arm with “artery” mark positioned directly over the brachial artery. The
bottom edge of the cuff should be positioned approximately one inch above the antecubital fold. Wrap the end of the
cuff, not containing the bladder, around arm snugly and smoothly and engage adhesive strips. To verify a correct fit,
check that the ADCUFF ™ nylon cuffs, with proprietary Size Guide ™ marking system, are specially designed to promote
the precise, accurate determination of blood pressure. Index and range markings ensure use of the correct cuff size.
The artery mark indicates proper cuff positioning. Place the cuff over the bare upper arm with “artery” mark positioned
directly over the brachial artery. The bottom edge of the cuff should be positioned approximately one inch above the
Select Smaller Cuff
▲
CORRECT
▲
Select Larger Cuff
▲
Cartridge Tube
Locking
Mechanism
Bulb &
Valve
Main Unit
Reservoir
Cuff