Service And Maintenance - parkell Digitest II Instructions For Use Manual

Cleaning and Infection Control of the
Digitest II
• DO NOT AUTOCLAVE THE DIGITEST II POWER
UNIT, AS THIS WILL CAUSE DAMAGE TO IT.
• The Power Unit should be protected using appro-
priately-sized disposable plastic barrier sleeves.
Since the Digitest II incorporates sophisticated
electronic circuitry, it should not be directly sprayed
with or soaked in disinfectant. The device may be
disinfected by wiping it with a damp cloth or paper
towel sprayed with an EPA-approved high-level
surface disinfectant, and dried with a paper towel.
Follow the surface disinfecting protocol specified
by the disinfectant manufacturer.
• The Tooth Probes, Lip Clip and Wire Assembly
may be sterilized in any conventional steam auto-
clave (132-135C for 15 min for gravity displacement
or 4 minutes for prevacuum cycle, or using the
manufacturer's recommended procedure, if differ-
ent). Minimum cool down interval is 15 min.
• Autoclaving does not remove accumulated
debris. Before autoclaving, scrub the autoclavable
components with a brush, or clean in an ultrasonic
cleaner, using warm, soapy water.

Service and Maintenance

• Do not open the Power Unit, except to change the
battery. There are no user-serviceable parts inside.
Internal repairs are to be made only by authorized
Parkell personnel, by returning the unit to the
service address at the end of these instructions.
• Avoid dropping the Power Unit or subjecting it to
physical shock.
• Battery should be removed if unit is to be stored
unused for more than 30 days.
• To prolong battery life, the device automatically
turns off after 14 seconds of inactivity.
• When the battery capacity is low, the Left and
Right digital display digits will flash alternatively
while the unit is activated. Replace the battery as
explained in the section "Changing the Battery".
• If a Tooth Probe becomes loose in the mount of
the Power Unit, it may be tightened by carefully
inserting a flat screwdriver blade into the split
metal base of the probe and gently expanding
the sides apart with a twist of the tool.
• Discard and replace any Tooth Probe if the
metal or the insulation becomes damaged
during use.
Changing the Battery (Figure 2)
• The Digitest II Pulp Vitality Tester comes with
a high-output, 9 Volt alkaline battery factory
installed.
• The replacement battery may be a Duracell
MN1604, Panasonic 6AM6 or equivalent. Although
rechargeable 9 Volt batteries may be utilized, they
will require more frequent changing and charging
because of the considerable voltage required to
perform the pulp testing procedure.
• To replace a weak battery, remove screw (A) and
carefully lift off the plastic battery door (B) by gently
pulling it away from the Power Unit. Withdraw the
weak battery from the battery enclosure, and
Fig. 2
A
B
unsnap the wire battery connector. Discard
battery in accordance with all applicable
environmental laws.
• The fresh battery should be snapped onto the
connector and placed in the Power Unit so the
top end attached to the connector is placed first
into the opening. Slight pressure on the bottom of
the battery will help it to slide home. Replace the
plastic battery door (B) by engaging the tabs on the
bottom first, and tighten the screw (A) gently.
Digitest II Setup, Prior to Performing
Pulp Vitality Testing
• Standard infection control
protocol should be followed
during pulp testing, by wearing
disposable rubber, vinyl or
nitrile gloves. When wearing
gloves, the circuit is
completed by using
the autoclavable
Lip Clip and Wire
Assembly. Plug
one end of the wire
assembly onto the
socket on the bottom of the Power Unit (C), and
insert the Lip Clip (D) into the other socket. Place
a small amount of toothpaste on the lip to enhance
electrical conductivity, and then place the Lip Clip
over the patient's toothpaste-coated lip, making
good contact with the mucosa.
• Although it is strongly recommended that gloves be
worn when performing vitality testing to maintain
accepted standards of infection control, if gloves
are not being worn, the ground wire need not be
used. The operator may complete the circuit by
making contact with the metal plate of the unit
and touching the patient's cheek or chin with the
free hand.
• Remember that to accurately diagnose the condi-
tion of the tooth, pulp testing must be performed
on a patient who has not been anesthetized or
received gas analgesia. Make sure to use the
Digitest II tester BEFORE you administer local
anaesthesia or gas analgesia.
• The tooth to be tested and the adjacent teeth must
be clean and dry. Interproximal embrasures should
be made free of any impacted food debris, saliva,
water or plaque by flossing or scaling with an
instrument and air-drying before testing.
• It is often useful to electrically isolate the tooth
being tested from neighboring teeth or metallic
restorations by wrapping it with a clear mylar
strip, such as those used in fabricating Class III
composite restorations.
C
D