Heath Consultants GT Series - Manual (Page 75)

6-11
BARHOLE TESTING MODE
To switch ON the flashlight:
• Press and hold the Centre button again.
The backlight and flashlight are both timed to switch OFF
after one minute. Both can be switched OFF by a third
press and hold the Centre button .
6.6.3 Flow Fault
If a flow fault is detected, the pump stops automatically.
If a sample was in progress then current sample is halted
and ‘Purge’ cycle will be the next part of the sequence.
If flow fault is indicated, the instrument should be checked
for water ingress or blockage.
To clear the flow fault:
(Once the blockage has been cleared)
• Press the RH button .
6.6.4 Bead Fault
If a bead fault is detected, the pump stops automatically.
If a sample was in progress then current sample is halted
and ‘Purge’ cycle will be the next part of the sequence.
A bead fault indicates a faulty sensor and therefore the
instrument should be returned for service / repair.