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SERVICING 6
SERVICING 6
SERVICING 6
SERVICING 6
SERVICING 6
The Electrastream system should have a routine service at least once in 12 months.
IMPORTANT Always turn off the heating system and electricity supply to
the Electrastream before working on the Electrastream System.
6-1.1 Service Procedure
1. Confirm with customer service history and locate Benchmark Logbook.
2. Check cylinder model and serial number is listed in the Benchmark Logbook.
3. Visually inspect cylinder/s for damage, metal failure and signs of leaks.
4. *Visually inspect accumulator for damage, metal failure and signs of leaks.
5. Visually inspect expansion vessels and their pipework for damage, metal failure and
signs of leaks.
6. Visually inspect all Electrastream pipework for damage, metal failure and signs of
leaks.
7. Record mains pressure, system pressure and heating operating pressure.
8. Turn the heating OFF.
9. Turn the electrical supply to the Electrastream OFF.
10. Momentarily open the combination TPR Valve and check that the water drains freely
and safely to and from the tundish.
11. Open cylinder TPRV for 15 seconds and close, valve should shut off. Repeat if valve
sticks. If valve will not shut off replace valve.
12. Open combination PRV for 15 seconds and close, valve should shut off. Repeat if
valve sticks. If valve will not shut off replace valve.
13. Open heating TPRV for 15 seconds and close, valve should shut off. Repeat if valve
sticks. If valve will not shut off replace valve.
14. Close the Stop Cock.
15. Open the hot and cold taps, attach a hose to the cylinder and *accumulator drain
cocks and empty the system.
16. *Check the pressure of the accumulator, this should be 1.5 Bar below the mains
pressure with an absolute minimum of 0.5/0.8 Bar.
17. Remove Immersion Heater, remove limescale and examine the element.
In hard water areas it is probably better to replace the Immersion Heater if heavily
scaled. Refit Immersion Heater with gasket.
18. Clean and check the line strainer in the combination valve - replace if required.
19. Check and clean the expansion relief valve in the combination valve - replace if
required.
20. Close all drain cocks and refill system.
21. Check that no water is passing through the Combination Valve or the Pressure Relief
Valves, this will be evident at the Tundish.
22. Switch on the Electrastream isolator and set controller and room stat for heat.
23. Wait for the system to heat up.
24. Check temperature of hot tap water adjust as required, max. 60°C.
25. Check for leaks and bleed system again when the system is up to temperature.
26. Check operation of room stat and timer.
When timer is set for heat and the room stat is set above ambient - the motorised
valve should be open and the pump should be running. When the room stat is reset
below ambient, the pump should stop and the valve should close. When the timer
is not set for heat the pump should not run and the valve should be closed
regardless of room stat setting.
27. Enter details of service into the Benchmark Logbook.
6-1
Routine Service
Note
If heavy scaling is evident then descaling
the system is recommended. Ensure
system is fully flushed following descaling.
IMPORTANT
Also carry out any service
requirements of specific
components as specified by the
manufacturers instructions.
* Electrastream Plus only
IMPORTANT
The final fill of the heating system
should include the correct dose of a
suitable scale/corrosion inhibitor.
66666
Summary of Contents for Electrastream
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