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Sentinel X400 System Restorer 1Ltr (89458)

1Ltr. Apply to existing systems for the removal of sludge and deposits. Iron oxide is broken down and dispersed through flushing.

  • Removes Sludge
  • Breaks Down Iron Oxide
  • Removes Sludge
  • Breaks Down Iron Oxide

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£16.99INC VAT (£16.99/Ltr)

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Sentinel X400 System Restorer 1Ltr is rated 4.8 out of 5 by 30.
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Rated 5 out of 5 by from Restoring old central heating Using it in an old central heating system which has not been cleaned in decades. Will leave in the system for 4 weeks. May be my imagination, but after a couple of days, already there seems to be an improvement in some of the radiator cold spots.
Date published: 2016-12-14
Rated 5 out of 5 by from So good I used it again Second time using this first was several years ago. It worked well then. I have come up against a rather stubborn blockage in very old system and put the two bottles in an empty system. Topped up with water. Early days yet but previous cold spots are showing signs of warmth after only two days. Will keep my fingers crossed
Date published: 2016-12-06
Rated 5 out of 5 by from Quality product. Quality product easy to use. Did a great job of cleaning the heating system.
Date published: 2016-12-04
Rated 5 out of 5 by from Did the job I had a couple of radiators with cold spots at the bottom, these have improved since adding the product. I am leaving it for a week before flushing but seems to have done what I needed
Date published: 2016-11-22
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5 Questions  5 Answers

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13 Nov 2016
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by
Ealing
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Answer: 
Hi there, to remove limescale you require Sentinel X200.
Kind regards
Customer Service
14 Nov 2016
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Or does it need to be poured directly into a radiator?
7 Oct 2016
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Chelmsford
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Answer: 
Hi there, Sentinel X400 cleaner may be introduced into the heating system via the expansion header tank by the following procedure.
Circulate the system at temperature for 15 minutes
Isolate the feed to the header tank
Drain the system from the lowest point
Refill the system via the header tank WHILE ADDING the X400
Circulate the X400 cleaner in accordance with the instructions on the label
Kind regards
Customer Service
10 Oct 2016
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1 Answer

How much do I need?

I have a domestic microbore system with 11 radiators. How many litres of x400 do I need?
4 May 2016
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epsom
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Answer: 
Hi there, 1 litre of Sentinel X400 is sufficient to treat a typical domestic system of 8-10 radiator panels. Larger systems should be dosed with 2 litres.
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Customer Service
5 May 2016
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Good afternoon,

An additional radiator was added to my CH system, and the piping used for the additional radiator is plastic.

Is this product compatible with my system?

Kind regards

Ali
21 Mar 2016
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Bradford
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Answer: 
Hi there Ali,
Yes, it is perfectly safe to use Sentinel X400 High Performance Cleaner on systems with standard plastic plumbing pipework.
Kind regards,
Sentinel Customer Services
22 Mar 2016
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When and how would you use Sentinel X400 in your central heat
System
16 Aug 2015
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Berkhamsted
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, Electrician
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Answer: 
Hi there
If you are tackling circulation problems, identifiable as cold spots in radiators, most often caused by sludge build-up. The formation of this sludge is almost impossible to completely prevent and it often settles in low flow areas of the system.

X400 High Performance Cleaner is the best central heating cleaner for this job as it breaks up, lifts and suspends this sludge, then allowing it to be flushed out of the system. In order to do this, it should be circulated, ideally at normal operating temperature, with all valves open and the pump set to maximum flow for a minimum period of 2 hours or until satisfactory performance is restored. In badly fouled systems, a period of circulation of up to 4 weeks is recommended

best regards
Sentinel Customer Services
17 Aug 2015
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  • 2016-11-18 T05:39:41.146-06:00
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Specification
Brand Sentinel
Manufacturer Guarantee 1 Year Guarantee
Model No X400
Pack Size 1
Pieces in Pack/Case 1
Product Type System Restorer
Sealant Adhesive Volume 1 Ltr
Volume 1 Ltr

Downloads

Safety Data Sheet (COSHH)