Just finished something I was working on and decided to look at a circuit you could have a use for. I will call it the Auto Flush on Pump and here is why: You have a submersible pump and the sump does get some solids into it which, at times, blocks the intake on the …
What is Preventative Maintenance Start at the  Beginning To put it all into one sentence, your job is to carry out preventative maintenance to all plant and equipment in a cost effective and efficient manner so as to ensure downtime is kept to a minimum. We have now had a look at the …
What Exactly Is My Role For this manual, I have focused on a generic type role description for the position of Maintenance Electrician. Take Ownership of What you do! Most companies will tell you that your role is to ensure equipment functions to the specifications and to conduct fault finding in the case of a …
This is a topic that we tend to overlook at times and that is the functioning of the Thermal Overload. We tend to remember to wire them into the circuit without paying too much attention to them at all. We will start by having a quick look at the basic operation of the unit. The …
Now that we have had a look at some basic interlocking of an electrical circuit, let’s take a look at how you can put this to use. The circuit below is that of a three phase forward reverse. In this circuit we have gone for the very basic interlocking on the electrical only and there …
The company I work for are still experiencing continued growth. This has created an opportunity for a suitably qualified Maintenance Electrician to join our team. Have a look at the ad below and if this is you, please forward your resume. As a rule I would not place this on my blog, but given the …
We have had a look at motor testing on the three phase motors and I think we should also have a quick look at the single phase connection diagram. There are a number of single phase motors on various pieces of equipment and what I will try to do here is to explain it as …
We have covered a few items during the posts on fault finding and I think we should consider something else you will encounter on circuits namely, Interlocking. Reality is that it means one thing needs to happen before the next one can or if one thing has happened, the next one can’t. Sound complicated? It …
Quite often you will come across an installation that has a variable speed drive in the panel. When you need to find a fault here, check the display on the drive and act on it. It is very easy to ignore the message and assume the drive is faulty. Fact is, normally the drive has …
In the last post I took the control circuit through to the contactor coil for the purpose of fault finding. What we need to look at briefly is the operation of the contactor. As you saw in the sketch of the control circuit, we followed the circuit through to the coil. What happens once we …