C/H cleaning solution query

[ESplumber]

just a quickie,I'm doing a job tomorrow where the customer was having a prob with the c/h so a system cleaner was added(by a previous plumber) and i'm going round to basically give it a bit of a flush out(i was just going to empty it,get rads off and blast with the garden hose and refill and empty it a couple of times),now i get the impression that this could've been added several months ago and i'm pretty sure that most of these cleaning products aren't meant to be in system for more than a few hours/day or two at most,so im wondering if anyone has had a similar experience and tell me if this stuff is left in long term what possible side effects it might have?(just trying to cover my arse!)
Cheers!

 

[doitmyself]

Depends on which cleaner was used. Some say it should only be left in for a few hours, others say you can leave it in indefinitely.

With any luck the previous plumber left the can in the loft.

 

[ESplumber]

cheers diy,i'll check in the morning with him.I'm just a bit concerned about the length of time its been in as its a set price job and want to try and avoid any costly problems

 

[marleyco]

cover yourself in that you cant guarantee your flushing will fix the problem. i say this because i had done same to 2 rads not heating up fully. still arent, i changed her boiler previous, obviously cleansed then flushed then returned to try and get to the bottom of it using your method. 2 bills later and now i am recommending a power flush. which i dont do.

 

[ESplumber]

thanks marley,i'll do that too!

 

[Winston]

Be careful some of the chemicals can rip the system apart if you are going to apply mains do it gently and only one rad at a time. Hopefully they have only put sludge remover in.

Whenever I do rad work I always put sludge remover in and give the customer the option of 2 hours or the max working time of 4 weeks as per the instructions. I like this cos I get to return check all is well and often get further work out of it, a bit of after sales if you get my drift

Let us know how you have got on.

 

[ESplumber]

thanks winston,really appreciate everyones advice and i'll post tonight

 

[david williams]

why dont you do power flush ? you can hire machine if you dont have one.but even with power flushing some rads are to far gone .

 

[ESplumber]

turns out one of the rads was badly corroded so the job's delayed until next week while I wait for the new rad to arrive