Sentinel R500 Technical Information

Technical Information
Sentinel JetFlush Survey Kit
Survey Kit Components
•
Sentinel X100 Test Kit
•
Turbidity Tube
•
TDS Meter
•
Mini IR Thermometer
•
Conductivity/TDS Standard
(1413µS/989ppm)
Introduction
The JetFlush Survey Kit is designed for use in
conjunction with the Sentinel JetFlush domestic
central heating system flushing unit. It will rapidly
identify where problems exist due to the build up
of corrosion and scale debris and allow you to
demonstrate the effectiveness of the flush once it
has been completed. The Survey Report can be
printed and it allows you to record relevant
information, both pre and post flushing, to show
the improvements to the system. The completed
report can then be left with the customer.
Procedure
Mains Water
Take a sample of cold mains water and measure
the TDS using the meter supplied and following
the instructions shown later. Record the reading
in the appropriate box on the Survey Report.
Heating system - Pre-flushing
After setting the boiler thermostat to a
o
temperature below 40 C, as per the JetFlush
Manual, and allowing the system to stabilise, a
survey of the system should be carried out as
follows using the Survey Report:
1. Locate each radiator and record the locations
on the Survey Report.
2. Measure the temperature at 5 points on each
radiator surface by pointing the IR
thermometer at the following points:
Sentinel Performance Solutions Ltd, The Heath Business & Technical Park
Runcorn, Cheshire, WA7 4QX T: +44 (0) 1928 588330
Page 1 of 3
•
Bottom left (BL)
•
Top left (TL)
•
Centre (C)
•
Bottom right (BR)
•
Top right (TR)
Record the readings on the Survey Report
and note those radiators with substantial cold
spots.
3. Record the settings of any TRVs before
opening them to their maximum.
4. Locate the system drain valve and allow to
run to waste for 1 minute taking appropriate
care to avoid burns by using heat resistant
gloves. Take a sample of water and carry out
the following:
•
Fill the Turbidity Tube to the top mark
(200ppm) and look through the column of
water. If the black concentric circles can
be seen then record the turbidity as
<200ppm.
•
If the circles cannot be seen, remove
small volumes of water until they are
visible. At the final water level take the
reading off the side of the tube and record
on the Survey Report.
Heating System – Flushing
To determine whether the system is completely
flushed, take a sample of water from the drain
valve and carry out either or both of the following
two tests:
1. Fill the Turbidity Tube to the top mark again
(200ppm) and look through the column of
water. If the black concentric circles are
visible then the system is sufficiently clean. If
the circles are not visible, then further
flushing is required until the circles can be
seen. Record the final reading on the Survey
Report e.g. <200ppm.
F: +44 (0) 01928 588368
Mar-11