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I am having trouble maintaining temperature in a wash tank on a commercial dishwasher. The steam coil is submerged in the water in the tank. A solenoid coil allows steam to enter the coil when called for, air and condensate are handled by an inverted bucket trap.
The tank next to it has a similar setup, and has no heating issues.
I have nearly zero lack of access to anything, (I could only pull the strainer and it was clean, cannot access the solenoid valve), so my last troubleshooting step was to install a pressure gauge after the coil and before the trap. According to the incoming gauge there is an average pressure of 22 psi, the gauge I installed shows an average of 7 psi, after being allowed to call for heat for a bit. It's near zero at 1st.
Are the readings from this gauge installed after the coil and before the trap of any use at all?
Thank you for any and all insights and responses.