SafeTcheck OPeRaTOR'S MaNUaL
14
Operating Instructions
9 During the test cycle the
SafeTcheck's
will check that the stainless steel cloak and return lead are
correctly connected. This will ensure that the correct test
environment is present to measure the insulation resistance
of a double insulated appliance.
is a unique
feature of the
SafeTcheck
Portable Appliance Testers.
10 If the verification test passes the
SafeTcheck
will continue
with the double insulated appliance test.
If the verification test fails then it maybe for one or more of
the following reasons:
a)
has found the double insulated
appliance is not correctly wrapped or connected to the
return lead for double insulated appliances.
b) The assumed double insulated appliance is in fact an
earthed appliance.
c) The double insulated appliance is connected to the
SafeTcheck
via a non–compliant extension cord.
d) The appliance is earthed via another path
such as a metal earthed bench.
e) Both active (A) and neutral (N) leads are open circuited
in the appliance e.g. failure to turn ‘ON’ appliance
switch(es).
f) The resistance of the stainless steel cloak around the
appliance is too high.
g) The appliance has low capacitive coupling between the
external surface (the stainless steel cloak) and the internal
electrical circuit. Place some of the mains cable under the
Cloak to overcome this problem. This may apply to some
appliances with minimum internal circuitry e.g. a plastic
bedlamp, a vacuum cleaner where the motor is separated
by a relatively large distance from the case, or a mobile
phone charger.
11 Test results will be displayed on the LCD along with audible
tones and flashing LEDs.
a) Pass –
C
'Thumbs Up' and PASS indication on LCD
and a short BEEP with a GREEN indicator flashing
along side "Start".
b) Fail –
C
'Thumbs Down' and/or LCD Prompt indicating
the most probable reason for failure with: The measured
value (if enabled), a continuous BEEP and a RED indicator
flashing along side "Reset".
A FAIL indicating “poor continuity” denotes lack of
a circuit path between the Active and Neutral of the
appliance. If the appliance switch is on and this error
occurs then go to the RUN TEST.
For a FAILED double insulated appliance known to be
fitted with surge protection i.e. metal oxide varistors
(MOVs), test again using Class 2 (250V) test, see
OTHER APPLIANCE menu.
For appliances with no class identification, no accessible
earth and having 3 pins on the plug, a standard double
insulated test may fail, see OTHER APPLIANCE menu.
PROBE MODE
If for some reason it is not practical to use the stainless
steel cloak, then
Probe Mode
may be used. In
Probe Mode a test may proceed without a return lead
connected. This will ensure a 'Pass" for the test
but
a valid test will not have been performed
. To
bypass
, switch to
Probe Mode
, see
OTHER APPLIANCE menu.
Evaluation of in–service testing results
Where the
SafeTcheck
identifies an appliance/tool which fails
to comply with the test criteria the equipment shall be:
1 Withdrawn from service immediately and have a label
attached to it warning against further use.
2 Repaired by the appropriately qualified person and retested
after repair.
3 Refit test identity tags/labels etc. and log test in Safety
History records.
WaRNINg
Upon completion of a safety test and subsequent removal
of test lead and/or stainless steel cloak, please ensure all
switches, speed or thermostat controls are returned to their
‘OFF’ or minimum position.
Note:
may be turned off by switching to
Probe Mode. See the UTILITIES MENU.
Safety testing double insulated appliances
