Buckleys Dry Roof Pro User manual

MANUFACTURERS OF SPECIALIST TEST EQUIPMENT
Dry Roof Pro’
Operating Instructions
English Version
Please read carefully before use

Dry Roof Pro’’
3
Contents
Description
Page
4
Specifications
5
Unpacking
6
Operating instructions
7
Calculating the test voltage
8
Settings
8
Testing
8
Safety precautions
10
Types of fault
11
Maintenance
12
Battery charger
13
Electromagnetic Compatibility
19
Declaration of Conformity
22
Contact Details
23

Instruction Manual
Description
The Dry Roof Pro’ is designed to deliver an adjustable, stabilised DC output
voltage for the detection of leaks, defects and porosity in non-conductive flat
roof coverings. The Dry Roof Pro’ features a 2x8 character backlit LCD which
displays the user options for setting the test voltage, alarm volume, alarm
threshold sensitivity, the test voltage formula and an optional audible warning
tick that sounds when the high voltage is enabled. The test voltage may also
be automatically calculated from the entered coating thickness. Fault
detection is indicated by an audible alarm and illumination of a red LED on
the front panel. A low-tension coiled lead connects the unit to the test probe.
The user options are selected by a membrane keypad input. The selected
values and options are retained when the unit is switched off. During
operation, the test voltage will remain regulated as the batteries discharge.
Since the output voltage is DC, the material under test is subjected to
minimum electrical stress.
4

Dry Roof Pro’
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Specifications
Maximum output current: Less than 1mA (continuous)
DC sensitivity: Adjustable - 10µA to 450µA (pre-set to 350µA)
Batteries: 4 x D-cell Batteries
Meter accuracy: Volts: +/-1.0% +/-1 digit
Current: +/- 2.0%
Current meter FSD: 450µA
Test voltage formula: NACE SP-02-74
Unit dimensions: 172mm(W) x 85mm(H) x 235mm(D)
Unit weight: 2.9kg –Incl. carry case, batteries,
interconnecting lead and ESD wristband
Handle weight: 720g
Maximum relative humidity: 80% non-condensing
Altitude: Up to 2000m
Temperature range: 0ºC - +40ºC
Output voltage range:
Low range: 2-10kV in 10V steps
High range: 10.1-40kV in 100V steps
Polarity: Positive
Operating times (typical): 8 hours* (at 40kV)
* Test criteria BS EN-50356. Test unit fitted with 10000mAh NiMH cells.

Instruction Manual
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Caution, risk of danger Caution, risk of shock Earth return (grounding terminal)
Misuse or failure to comply with the guidelines outlined in this manual may
impair the safety provided by the equipment.
Unpacking
Remove the unit and accessories from the packaging and check for any
damage. Should any item be damaged or missing, notify the supplier and
carrier immediately, keep all packing material for inspection and do not
use the equipment.
Please refer to the specific Buckleys data sheet for details of kit contents.
Keep all packaging in case the unit needs to be returned for repair or
calibration.
IMPORTANT: This product must not be used in combustible atmospheres
or ATEX Hazardous Areas, such as fuel stations or in proximity to any
combustible gas (including oxygen).
IMPORTANT: This product can cause radio interference and caution must
be taken when operating in sensitive environments such as hospital roofs.
Ensure the product is correctly connected to an appropriate earth.

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Operating instructions
Switch the unit on by pressing the button. The LCD will momentarily
show the unit type then the set voltage before displaying the battery
condition, the preset voltage and the current conditions. The (HV status) in
the top left of the LCD indicates that the HV is disabled, indicates that the
HV is enabled and indicates the HV is enabled and locked on. The battery
level indicator is characterised to NiMH rechargeable cells.
The test voltage can be selected by dielectric strength or coating thickness.
Test voltage
Coating thickness in microns
Pressing the increase or decrease buttons will adjust the values. The formula
option must be selected in the user options in order to display the coating
thickness. The coating thickness may be displayed in metric or imperial
format via the user options.
Increase/decrease
buttons
Test probe
connection
Alarm sounder
& light
Earth connection socket
Settings button
LCD display
ON/OFF/LOCK
button

Instruction Manual
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coating
\
T
=
( )
Calculating the test voltage
Test Voltage = 1250 √ T
coating
Test voltage
250
Metric calculation example according to NACE RP-02-74
Settings
The button steps through the user options:
Pressing and releasing the select button will sequentially step through the user
options. Values may be changed using the increase/decrease buttons. The
values will be retained when the unit is switched off.
Testing
Attach the necessary accessories to the test probe. Connect the coiled
connection cable between the socket located on the lower right-hand side
of the front panel and the test probe. Connect the earth lead between the
unit’s earth socket and the substrate of the test subject. Ensure the substrate
of the test subject is at earth/ground potential.
Pressing the test probe ON button will energise the test electrode to the
selected test voltage that will be displayed in the LCD along with the HV status
and the amount of DC current flowing from the test electrode. During testing
the HV may be locked on by pressing and releasing the I/O / (lock) button. The
unit will sound two bleeps and display (HV status) indicating the HV is now
locked on and will continue to generate HV when the test probe ON button is
released. To unlock and disable the HV press the button once more.
Where T is coating thickness in
thou/mils (0.001”)
Where T is coating thickness in
microns (0.001mm)

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Fault detection is indicated by an audible alarm and illumination of a
red LED on the front panel. The DC (alarm) sensitivity of the unit should be
adjusted to suit the material under test. The value shown in the
option refers to the DC current in micro-amps allowed to flow from the
test electrode before an alarm is indicated, there are many variables that
may contribute in changes to the amount of current flowing including the
electrode size and its velocity.
The DC sensitivity may be adjusted from 10µA, the most sensitive setting, to
450µA, the least sensitive setting, in addition the PHD Pro’30 and PHD Pro’40
units may be set to a ‘Spark Only’ setting where the output voltage and DC
current monitoring are disabled. In this setting the alarm responds only to a
total air discharge of the test probe. The default sensitivity is set at 350µA.
Alarms may be generated by the follow conditions:
● If the DC current flowing from the electrode is equal to or greater than
that set by the user in the option. (Fig 1)
● A spark caused by the ionisation of the air that exists in an imperfection of
the coating material. (Fig 2)
● If the unit is excessively loaded thus reducing the test voltage.
In this case the generator will continue to apply a current to the fault
and the reduced test voltage will be displayed. indicates that the
electrode current has exceeded 450µA. If the ‘Spark only’ option is set, the
unit ignores any reduction in test voltage.
Fig.1 Fig.2
When testing is complete, the unit may be powered down by pressing the
button. The unit will display ‘ ’on the LCD and then switch off.
The unit also features auto shut down after approximately ten minutes of
inactivity.

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Safety precautions
All high voltage testing equipment should be operated by responsible
authorised personnel only.
The output voltage of this equipment is derived from a high impedance
source and is current limited. However, when the equipment is in use, should
the operator accidentally contact the test electrode they will receive an
electric shock. If this situation is unavoidable we recommend that rubber or
plastic insulating gloves be worn. Furthermore, the operator should be in
good health and - in particular - not suffer from any cardiac condition.
During testing, a static charge may accumulate on the surface under
test. If the operator is walking on the surface, he or she may also become
‘charged-up’. When discharged to earth, this charge could result in a static
electric shock, such as may be experienced in the home under certain
weather conditions. Whilst such a shock does not normally present any
danger to the user, it can be unpleasant. In most cases, the operator can
avoid this by wearing the blue ESD wristband supplied and ensuring it is
connected by the blue cable to the grounding terminal (4mm socket) on
the Dry Roof Pro’s test probe handle, or the earthing point on the instrument
case. In all cases it is essential to ensure that the instrument is correctly
earthed.
DANGER: Do not use test equipment of this type in any
combustible atmosphere as the test voltage may cause a
spark from which an explosion could result. Therefore, the plant
or site Safety Officer should be consulted before proceeding
with any testing.
We cannot stress too strongly that equipment of this type
should be operated only with a secure connection to earth
or ground. This applies especially to the testing of plant or
test pieces, which do not have a permanent connection to
ground. Failure to comply with this procedure may cause
shock to the operator or damage to the equipment.