Cold service

2021-06-21 16:04:13 The same unit with a 10 amp relay. Open / Comment

2021-06-21 16:02:03 And in this photo, the EL 961 POLETRON control unit also has a single sensor and has identical characteristics to the previous RANCO unit, but with one significant drawback - it is a very weak load switching relay. In the photo, it is surrounded by a green oval. Under the red oval is indicated the chip switching this relay ULN 2003A and this chip is already controlled by the central processor installed on the submodule. These are the cheapest control units on the service market, so it's up to you to decide which unit to buy. After all, even on household refrigerators there are relays for switching the compressor 16 amps. I will give an example: if you install such a unit on a freezer with an EMBRACO ASPERA T2180GJ compressor, then this unit will fail on the first day of operation, and specifically the switching relay of this compressor will burn. Open / Comment

2021-06-21 15:39:57 RANCO with the lid removed where you can see the same relay. Open / Comment

2021-06-21 15:37:23 This is a RANCO control unit with a single sensor, suitable for most commercial refrigerators and freezers where defrosting of the evaporator is not essential. On the inside of the unit, you can see the 30 amp compressor switch-on relay, which makes this unit almost universal in relation to the vast majority of commercial equipment, since it has a very powerful switching relay in its design. These blocks appeared on the market quite recently and proved to be very good, but there are also a few failures in these blocks along the circuit of the step-down transformer in the primary winding. This breakdown appears immediately in the first days of operation, but I think that this will not affect a good review of these modules, since the sellers will change you for a serviceable product. In all other respects, RANCO is a completely exact copy of ELIWELL. Open / Comment

2021-06-21 14:57:35 Would you like to highlight the control modules of commercial coolers RANCO, ELIWELL? POLETRON which to choose, which is more reliable, price and quality. On the Internet there are many descriptions of how to configure how to install but there is almost nothing about the internal filling. I will try to lay out all the insides of these devices. Open / Comment

2021-06-21 14:47:34 And this is the opposite part of the heater mounting on the front forecastle, deposits are also visible that prevent a good return of heat to the surrounding water. Open / Comment

2021-06-21 14:45:03 The same rear part of the forecastle on the side of the heating element, due to the accumulation of deposits in the area of the heating element in the form of scale and lint, most often it fails. Open / Comment

2021-06-21 14:41:46 LG washing machine with a defect in the support bearings.On the inside of the rear forecastle, there are deposits of jelly-like dirt that cannot be removed with chemical solvents, but only by mechanical means and with complete disassembly. Open / Comment

2021-06-17 16:33:34 And finally, for today's posts, the flushing freon R141b. The product is undoubtedly expensive, but the effect of its use is amazing, besides it can be washed more than once, I personally use 4 pound up to about 5 times in combination with nitrogen. Open / Comment

2021-06-17 16:25:47 And this is a bar of solder and flux for soldering in a combination of copper/aluminum. Open / Comment