Heath Consultants Personal Surveyor (PS200 Series) - Manual (Page 62)

4-12
USER HANDBOOK
4.5.4 Low Flow - (Pumped instruments only)
If there is a restricted flow, a “LOW FLOW” warning flashes
in the display, the display will be red and both audible alarm
and red LED’s will be activated.
In this alarm condition, the pump symbol is not displayed.
Refer to example Fig. 4.11.
Fig. 4-11 Low Flow
Check maximum sample line length (30 metres) is not
exceeded and check sample filter or probe for blockage, if
applicable.
4.5.5 Flow Fault (Pumped Instruments Only)
If a flow fail or sample fault exists, a ‘FLOW FAULT’ warning
is displayed, as illustrated in Fig. 4-12. The display will be
red and both the audible alarm and red LED’s will be activated.
Check sample line, filter or probe for blockage, if applicable.
Clear the blockage then restart the pump by a press and hold
of the Right Hand (RH) button .