Tinker & Rasor AP User manual

Tel: [phone] Fax: [phone]
P. O. BOX1667 SAN BERNARDINO,CA 92402
Web: www.tinker-rasor.com E-mail: [e-mail]
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Sponsoring members of NACE International, NACE Foundation
QMF-570 007-118
PRODUCT INSTRUCTIONS
MODEL AP
VOLTAGE REGULATED HOLIDAY DETECTOR
STARTING WITH SERIAL NUMBER 8044
1. HOLIDAY DETECTOR FUNCTION
The Tinker & Rasor Model AP Voltage Regulated Holiday is a portable, all-purpose electrical
inspection instrument which maintains a given inspection voltage in spite of the electrical load on
the circuit or the charge on the battery. It is recommended for use on any pipe diameter as well
as on flat surfaces when such surfaces are coated with a highly electrical resistance material, and
when the surface beneath the coating is electrically conductive. The detector works equally well
on damp or dry surfaces, and is especially desirable where humid conditions prevail.
2. INSTRUCTIONS FOR UNPACKING & INSPECTION
A. Open the carrying case and make note of where the various accessories are located. To
ensure proper storage, repack accessories in the same manner when not in use.
B. INSPECTION should be made upon receipt. If damage has occurred during shipment,
file a claim with the carrier immediately.
C. If it is necessary to contact your supplier or the manufacturer concerning damaged or
missing items, be sure to include the serial number, purchase order number, and invoice
number of the instrument in question.
Safety Information for User
Unpacking and Reviewing your Tinker & Rasor Holiday Detector Before Every
Use
•Make certain the inside of the case is clear and dry.
•Inspect each component for damage, such as cables, instrument & wand handles.
•Make sure all of the electrodes are clean.
•Verify the unit is fully charged.
•Verify that the output voltage is correctly set to the coating manufacturers recommend
inspection voltage.
•If manufacturers requirements are not stated, NACE International, SSPC or ASTM
Standards can be followed.
AND……… ALWAYS READ THE INSTRUCTIONS THROGHLY PRIOR TO USING ANY TEST
EQUIPMENT!
WARNING! This is a HIGH VOLTAGE device capable of producing an electrical shock if
not properly grounded and/or operated in accordance with the instructions and
procedures prescribed in this manual!
DANGER! IF YOU HAVE A PACEMAKER DO NOT USE THIS DEVICE.

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Sponsoring members of NACE International, NACE Foundation
QMF-570 007-118
PRODUCT INSTRUCTIONS
If you have a pacemaker, life critical electronic medical devices or any medical condition effected
by High Voltage, DO NOT use this type of equipment. Only trained and responsible personnel
should operate high voltage equipment. Alert all personnel nearby prior to testing and display
warning signs. It is important to realize you are now using a high voltage, low energy holiday
detector. Tinker & Rasor holiday detectors, APS & AP/W, are designed to generate between 800
to 35,000 volts, pulsating DC. While these voltages are high, the energy emitted is well within
US, OSHA guidelines. https://www.osap.org/page/GuideOSHA
Rubber or plastic gloves and non-conductive footwear can minimize potential shock. Keep in
mind that the shock prevention effectiveness of the rubber or plastic glove and footwear is
limited to the condition of their protective surface. Make sure your gloves and footwear are in
good condition and have no holes or tears. Most Portable Holiday Detectors are limited to finding
defects in nonconductive coating materials. Testing should ONLY be conducted clear of personnel
not involved in the testing procedure. Personnel operating Holiday Detectors should always be
aware of their environment and the safety limitations imposed by same. Operator should have an
alert assistant, to ensure that all unauthorized personnel are kept clear of the testing area.
DANGER!!! Portable Holiday Detectors create an arc or spark. Use of a Portable Holiday Detector
in or around combustible or flammable environments can result in an explosion. When operating
in any potentially hazardous area, consult with the plant or site safety officer before proceeding
with a holiday detection test in any potentially hazardous or suspect area.
CAUTION! DO NOT USE AROUND SENSITIVE ELECTRONICS OR RADIO EQUIPMENT.
When “on” but not in use, Tinker & Rasor Pulse Type Holiday Detectors, APW and APS will
generate radio frequency emissions which are within the limit defined by the Electromagnetic
Compatibility Directive. Due to its method of operation however, the APW and APS Pulse Type
Holiday Detector will generate broadband RF emissions when the unit is generating high voltage
or when a spark is produced at the electrode. It is therefore recommended that the user does
not activate the high voltage within the vicinity of sensitive electronics or radio equipment.
DO NOT SHORTEN THE GROUND CABLE. NEVER TOUCH THE BARE GROUND WIRE
WHEN THE DETECTOR IS TURNED ON.
WARNING! USE CAUTION WHEN RAINING. If it is raining then there is a safety concern for the
operator. Surface water on the sub straight is usually not conductive enough to transmit voltage,
but almost any contaminant will cause water to become more conductive. If water covers the
wand handle while connected to the APW Power-Pak or the APS Instrument, then the operator
could become the return path for the high voltage. While the output voltage will cause harm to a
healthy person, according to OSHA, your environment must be taken into consideration when
operating this type of equipment. For example; if you are standing on top of a flag pole and
receive a jolt of high voltage, it will most likely cause you to jump, and you will fall off the flag
pole.
Stay Alert, Stay Aware and Stay Alive .
If it isn’t raining, but the coating surface is wet, Tinker & Rasor Holiday Detectors are designed to
minimize the effects of damp or wet coatings. In extreme cases, “ghost” holidays might be
witnessed, should a continual path of water reach a holiday. If this continues, dry the sub
straight and continue testing.
It is important to note that all accidents are preventable. Take caution when using
Tinker & Rasor holiday detectors or any other high voltage test equipment.
3. CHECK-OUT INSTRUCTIONS

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Sponsoring members of NACE International, NACE Foundation
QMF-570 007-118
PRODUCT INSTRUCTIONS
A. Remove all accessories from the carrying case with the exception of the battery charger.
(The instrument is shipped with two batteries, one of which us already in the unit).
B. Make sure that the detector is turned OFF.
C. Using the VOLTAGE SELECTION TABLE on the back panel, select the specific voltage
required Unscrew the protective cap on the SELECTOR and use a screwdriver to turn the
switch to the HI or LO position. Replace black plastic cap cover. Use same procedure to
adjust voltage settings. CAUTION: ALWAYS CHANGE HI-LO SWITCH WITH
DETECTOR TURNED OFF.
D. Connect high voltage cable and ground cable to detector (insert and twist clockwise).
E. Attach probe handle to voltage cable.
F. Attach electrode to the voltage probe assembly and apply to the structure to be
inspected. The electrode should always make intimate contact with the surface under
inspection.
G. The Model AP Holiday Detector is now ready to operate.
4. OPERATING METHODS
A good ground return system for both the pipe and the detector will always provide the best and
most reliable inspection. The pipe to be inspected must be grounded from the bare pipe to earth
at some point along the pipe. If individual joints of the pipe are to be inspected that are not
electrically connected, each joint must be grounded. The speed of the electrode's travel along
the pipe should never be excessive, since faulty inspection may result. Occasional checks of the
detector operation should be made, particularly if no holidays are being found. This can be
accomplished by testing for the spark and signal at the edge of the coating where bare pipe exists
or by touching the probe end to the bare pipe and noting the length of the spark and the signal
effectiveness. If the signal does not occur when the spark discharges from the electrode into a
known holiday, the ground return (i.e. the path between the metallic pipe and earth and the earth
to the ground trail of the detector) is of high resistance. In this case, a better ground is required
and a direct connection between the metal pipe and the ground wire may be necessary. This
type of grounding is extremely uncommon unless the soil is very dry of the detectors output is
low.
Correct voltage output for a given thickness of coating has long been a matter of controversy.
However, recent formulas have been suggested which may be used as a guide for correct peak
voltages on various coating thickness. The calculation is as follows:
V = K √ T
WHERE V = Peak voltage in volts.
T = Thickness of bonded coating in mils (not
including outer wrappers).
K = Constant of 1,250 for coatings over 30 mils
and 525 for fusion bonded epoxy coatings.
These formulas, when applied to a coating of 3/32” thickness and with a constant of 1,250, would
indicate an applied voltage of 12,500 volts peak or a coating of 16 mil thickness with a constant of
525 would indicate an applied voltage of 2,100 volts peak. A common practice used in setting
inspection voltages in the field is to adjust the output voltage by visual observation. It is the
general consensus that spark discharge at least twice the thickness of the coating will give

Tel: [phone] Fax: [phone]
P. O. BOX1667 SAN BERNARDINO,CA 92402
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Sponsoring members of NACE International, NACE Foundation
QMF-570 007-118
PRODUCT INSTRUCTIONS
adequate inspection voltage and compensate for any irregularity in coating thickness and
grounding conditions. If this practice is desired for determining inspection voltage, it should be
done while the electrode is in the normal operating position and under actual grounding
conditions.
The formulas and suggestions for setting voltage are supplied as a guide, and are not necessarily
recommended by the manufacturer of this detector. Unless output voltage is specified, the
voltage is factory set at 14,000 volts at time of shipment. Consult the coating manufacturer for
recommended voltage applications.
5. INSTRUMENT SERVICING INSTRUCTIONS
A. Cleaning: Keep the instrument clean and dry. Clean the instrument case with a soft
cloth dampened with kerosene, then wipe dry. Do not use solvents such as lacquer
thinner, methyl ethyl keytone, etc.
KEEP ALL ELECTRICAL CONTACTS CLEAN
B. Voltage Output Checks
1) In case of LOW output voltage:
a) Check position of voltage selector switches.
b) Check battery (is it fully charged?).
c) Check for “parted conductor in voltage probe and/or ground trail.
2) In case of NO output voltage:
a) Check battery.
b) Check for “parted” conductor in voltage probe and/or ground trail.
c) Check battery contacts. MAKE SURE THEY ARE CLEAN.
6. BATTERY CHARGING INSTRUCTIONS
A. Use ONLY the battery charger provided.
B. Charge battery nightly after use.
C. To charge battery IN the instrument.
1) Connect plug of the battery charger to jack on battery through access
door.
2) Plug AC power cord into proper outlet.
3) Charger indicator light is on during charging. It will begin to flash on
and off when battery is fully charged.
D. To charge battery OUTSIDE the instrument:
1) Remove battery through battery access door.
2) Connect battery charger plug to battery jack and follow steps b and c
above (C).
E. Charge battery at temperatures above 45° F for best results.
F. Always disconnect charger from battery and AC outlet when not in use.

Tel: [phone] Fax: [phone]
P. O. BOX1667 SAN BERNARDINO,CA 92402
Web: www.tinker-rasor.com E-mail: [e-mail]
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Sponsoring members of NACE International, NACE Foundation
QMF-570 007-118
PRODUCT INSTRUCTIONS
7. BATTERY MAINTENANCE INFORMATION
A. When instrument fails to operate normally the battery may be fully discharged.
Recharging battery nightly will extend battery life.
B. Store at room temperature when not in use.
NOTE: DO NOT STORE BATTERY IN A DISCHARGED STATE.
RECHARGE AT LEAST EVERY 30 DAYS WHEN NOT IN USE.
8. FACTORY REPAIRS
Holiday Detectors returned to the factory for repairs should be sent TRANSPORTATION
PREPAID. In most cases the detector can be repaired and returned the same day it is received
at the factory.
WHEN ORDERING PARTS FOR YOUR DETECTOR OR REQUESTING FURTHER
INFORMATION ALWAYS GIVE THE DETECTOR’S SERIAL NUMBER.
Shipping Address
Tinker & Rasor
791 S. Waterman Ave.
San Bernardino, CA 92408
005-139