Fruit Trader

Pumps with open pressure vessel have never had bladders. Item 16 on the diagram is the air injector which maintains the pressure storage air pocket in the vessel. Each time the pump starts a diaphragm in the injector uses pump pressure to inject a shot of air.

The air pocket is maintained by an injector which will likely have increased capacity on pumps with a larger volume tank. Because you are keeping the same size pump and injector I can't see any problem with you using a larger capacity tank. Most important when fitting these replacement tanks is a good seal on all upper connections of the tank because this is where the air pocket is maintained. It makes sense that pumps with larger capacity require increased pressure storage volume.

There is no bladder, pressure is stored in a maintained compressible air pocket directly in contact with the water. If all of the fittings align correctly there should be no problem using a larger tank.

I personally rejected the explanation my friend was given and applied my own reason :- We do not accept yellow books as proof of address because the immigration office prefer we send all applicants to them for fee extraction.

After rejection of yellow book at Pattaya Land Transport Office, a friend asked the office supervisor for an explanation and got the following reply. The Pattaya office has not accepted the yellow book for several years when applying or renewing a licence that covers all of Thailand. Some exceptions were made during the Covid lockdown period. The Yellow book is acceptable if a Chonburi area only licence is required. The office has decided an immigration resident paper is more reliable for obtaining up to date residence status because it is connected with the latest TM30 information.

Depending on AA cell type and brand, it might even be possible to exceed 3000mAh in this very low discharge rate application.

Simple solution LM3909 IC probably get 2 years operation from a D cell. LM3909 Datasheet 2.pdf

Back on planet Europe our washing machine isolation valves and hose connections were located in the adjacent cupboard. Came in useful when a washing machine solenoid valve failed to close.

A simple ground rod connected to the refrigerator ground terminal will not be useless (do f/a as the experts describe it). Functional in that it will almost certainly handle any inverter filter currents and maybe small fault currents. How it would handle large fault currents to a level defined by the protective device can only be determined with proper fault loop test.

As an alternative to buying credit via top-up, you can use existing credit to buy time at the rate 1B/day max 30 days each application. The cheapest way to buy long time periods is to make repeat 10B credits at a machine. Each credit will require an additional 2B commission 12B total for each top-up. I believe 11 months is maximum .

The compressor has insulated noise isolation but what about refrigerant lines clamped to the case.

Note: Setting Export Power is either 1 or 0

The display default is Normal Pac (Power AC side) Pressing the button should provide other values like Vac Iac frequency on the AC side and total production. PSI have gone from selling standard Sofar brand inverters (with their logo) to a custom version along with display message variation and custom app. Not much detailed information available about the firmware. PSI products are available to anyone online which raises the question: who installed the sytem and how was it setup for export. Maybe best contact the installer and let them explain how the system has been configured for export and express your concerns about production levels at the inverter and mobile app.

Pumps with a tank on the bottom contain a maintained compressible air pocket directly in contact with the water not a bladder. For simple switched house pumps (Mitsubishi/Hitachi) there are two methods of control, pressure switch alone or combination of pressure and flow switch. On the compact pumps with small pressure tank a flow switch is often employed to help provide constant pressure and avoid pressure switch cycling during low flow.

Contains acid regulator no MSG no preservative.

Most plastic body sprinkler valves are 24V AC. Sprinkler controllers like Rainbird or Hunter will drive 24V AC valves directly and include power supply. Sprinkler controllers allow timed programming of zones and operating sequence of each zone with seasonal adjustment if required. Controllers and valves are available in Thailand. A 4 zone Hunter controller will cost about 3500B 24V AC valve

Yes. The PSI P33 inverter (3.3 kW from the Sofar stable) has real time production values available in display along with total production to date. The photo indicates possible CT connected so likely derating and not exporting. It would make sense for the OP to read output from the inverter display at sunny noon; once with all the house appliances turned on and again with them turned off.

Laundry lines are often made from plastic coated polymer or steel rope. The plastic coating allows easy wipe over to avoid leaving marks on clothing and sheets. Plastic coated steel rope is available here but not sure how well it would hold up to UV exposure.

The pressure tank label will likely show the tanks max operating pressure. Bladder tanks are normally charged to approx 1-2 psi below pump cut in pressure with the water side fully discharged.

If the OTP code suggests EEPROM error, this can be generated if the EEPROM itself is faulty or from a fault on the mother board preventing the main CPU from communicating with the EEPROM IC. Firing the parts cannon at faulty units that use EEPROM to store options and model codes will very likely fail and end with either the indoor or outdoor unit unable to validate its components. Authorised Samsung service technicians use set procedures and diagnostic tools to find faults on these units. A central tech support provides data files for EEPROM programming based on serial number. Cut your losses and call Samsung service.

Most common house pumps like the Mitsubishi WP-305 are of the regenerative turbine type. When changes are made to pressure control switches it’s important not to exceed the limit of the motor because regenerative turbine pumps act differently to regular centrifugal pumps when the head changes. Running these pumps continuously against a high head will surely cause the motor protection switch to reach its limit. This following link explains in more detail how regenerative turbine pumps compare to regular centrifugal types. https://www.rothpump.com/regenerative-turbine-pump-little-pump-big-head.html?no_redirect=true

A video capture of the scene clearly shows brazing equipment which is used make connections on refrigerant lines. Near to the gas bottles is a concrete cover which has lifted and was likely covering a septic tank. Very common in Thailand for people to extend property over drains and septic tanks.

We used the jet method for electrical duct over about 1.5M in a tight space using water hose and a short piece of leader pipe. Example :-

The BYD blade batteries have cooling plates bonded across the full width of each cell. Each blade cell is capable of conducting heat towards the point where contact is made with the cooling plate. Not the best choice for those wishing to dismantle and repurpose EV batteries.

Possible an air leak has developed in the suction line used for cleaning. It might take several minutes for a pump to lose prime after the leaking vacuum line valve has been opened. First check all accessible joints and valves for leaks on the suction side. Why is the bottom drain line missing, is it because there was an inaccessible leak?