Hobart dishwasher not sure of make, could be a FX400-7ON
Were experiencing problems at work with the machine, the manual has been mis-placed i've tryed searching for the model on the offcial hobart site, but had no luck, do you know of anyway we can get hold of another manual, and where abouts to look on the machine its self to find the model number to help with our search? i've sarched pictures of hobart dishwashers and the picture that looks most likely to be our dishwasher is FX400-7ON.
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Do you realize that to sanitize with hot water alone requires 180 degree F water? I am a hobart technician and I've never seen any business or residence with hot water anywhere near that. Residential hot water is generally approx. 120, Commercial locations generally use approx. 140, but never near 180 (tap water that hot would be a severe safety problem). Hobart LXIH machines use a built in booster heater to boost the temperature of the incoming hot water up to the required 180 deg.
Use a commercial deliming agent (like Lime Away or LSR). Remove the rack from the dishwasher and close the door. Press Off to power down the machine. Next press and hold Wash (Delime) while pressing ON. Delime should show in the display. The unit will fill with water and then flash Add and Delime. Open the door and add the deliming agent according to the directions. (The sump holds about 3 gallons of water.) Close the door and press Wash (Delime). The machine will start the wash mode for 5 minutes and then do two rinse and drain cycles. Delime symbol will flash while this takes place. When finished, the power to the control will be turned off. Check the interior of the machine for lime deposits. If needed, repeat the delime cycle. If the delime program is interrupted before it is completed, then start the delime process from the beginning.
I am on the Total Dunbar in the North sea Northern sector. I have an intermittent fault code problem I would like to solve, did you ever get hold of a manual for the Hobart dishwasher?
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I'm not a Hobart technician, but here what I founded in my manual for the LX30 error message:
LX18 / LX30 display shows E0, E2, E3 or E4
1. Low water pressure - check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2. Make sure probes are clean
3. No water pressure - main water supply valves may not be working
4. Drain valve open - turn machine OFF to drain machine, then ON. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the OFF-ON procedure. If problem persists, call your local Hobart Service Office.
Todd - A pressure regulator will REDUCE pressure only. There is no back pressure - the machine's gauge is reading the incoming water pressure as it fills/rinses. Assuming the gauge is OK, the machine is only seeing 7 psi. There is an inline strainer in teh machine, check that for blockage. You said the machine was operating on 45 psi with a reading of only 12 psi. There may be some kind of pressure reducer - I have seen Hobart use special supply hoses with builtin orifices.
hope this helps, if not email me, i service commercial machines and came across your question as I was looking for help myself!
they make a deliming solid and a liquid (liquid Chisel) and the solid one is in a little plastic tub you place it on a rack and it disolves inside the machine I belive you can buy them from ECOLAB hope this helps
PS: if using the liquid wear gloves and goggles it is caustic
Hobart doesnt release service manuals but you can get an operation/installation manual for free here http://www.hobartservice.com/Manuals/ Im a service tech for hobart so if you have any questions let me know.