EVAPCO AT 19-56 User Manual (English)

Questions and Answers:

K
Kelly DeckerAug 19, 2025
What to do if the makeup valve will not shut off in EVAPCO AT 19-56 Accessories?
- E
  Evan SmithAug 19, 2025
  If the makeup valve won't shut off in your EVAPCO Accessories, it might be due to several reasons: First, high water pressure could be the culprit. Mechanical makeup valves need water pressure between 140 and 340 kPa to function correctly. If it's too high, install a pressure reducing valve. Second, the solenoid might be clogged with debris, so clean it out. Third, inspect the float or valve for damage and replace if necessary. Fourth, check the ball for leaks and replace it if needed.
L
Lisa RiceAug 22, 2025
Why is stainless steel rusting on my EVAPCO Accessories?
- G
  George PruittAug 22, 2025
  If you notice rust on your stainless steel EVAPCO Accessories, it's usually not the stainless steel itself corroding. Often, it's foreign material like welding slag on the surface, especially around coil connections, the cold water basin near support steel, and field-erected platforms. Remove these rust spots by cleaning the surface regularly with a stainless steel cleaner and a Scotch-Brite pad.
M
Mark WebsterAug 28, 2025
Why is water constantly blowing out of the overflow connection in EVAPCO AT 19-56?
- S
  Sean NorrisAug 28, 2025
  If water is constantly blowing out of the overflow connection in your EVAPCO Accessories, especially on forced draft units, it's likely due to positive pressure in the casing section. To resolve this, pipe the overflow with a P-trap to an appropriate drain. Also, verify the actual operating level against the recommended levels in the O&M manual.
M
Maria SheltonAug 30, 2025
How to fix unusual motor noise in EVAPCO AT 19-56 Accessories?
- P
  petersonrobinAug 30, 2025
  If you're hearing unusual motor noise in your EVAPCO Accessories, here's what you can do: * First, stop the motor and try to restart it. If it doesn't restart and seems to be single phasing, check the wiring, controls, and motor. * Second, check the motor connections against the wiring diagram. * Third, check the lubrication and replace any bad bearings. * Fourth, check the voltage and current of all three lines, correcting if necessary. * Fifth, check and correct bracket fits or the bearing. * Sixth, rebalance, reinstall, or replace the fan.
A
Alfred KramerSep 2, 2025
Why is the cooling tower cold water basin overflowing in my EVAPCO AT 19-56?
- T
  Tyler HowardSep 2, 2025
  If the cooling tower cold water basin is overflowing in your EVAPCO Accessories, it could be due to a problem with the make-up line. Refer to the Makeup Valve or Electronic Water Level section for guidance. Alternatively, if it's a multi-cell unit, there might be an elevation issue. Ensure that multi-cell units are installed level to one another, as uneven installation can cause overflowing in one cell.
S
Sandra HollandSep 5, 2025
How to clean scaled inlet louvers on AT units of EVAPCO Accessories?
- C
  carlos13Sep 5, 2025
  If you observe scaled inlet louvers on your AT units of EVAPCO Accessories, note that this isn't necessarily a sign of a problem with the unit or water treatment. Avoid using a power washer or wire brush to remove the scale, as this could damage the louvers. Instead, remove the louver assemblies and soak them in the cold water basin of the unit. The water treatment chemicals will neutralize and dissolve the scale buildup. The soaking time depends on the severity of the scale.
M
Mary GaySep 7, 2025
What to do if there is an incomplete spray pattern in EVAPCO AT 19-56 Accessories?
- T
  Thomas JohnsonSep 7, 2025
  If you notice an incomplete spray pattern in your EVAPCO Accessories, try these steps: * First, remove and clean the nozzles, and flush the water distribution system. * Second, visually verify the pump rotor rotation by turning the pump off and then on, and verify the amp draw. * Third, confirm that the inlet pressure at the header meets the recommended values. * Fourth, remove the strainer and clean it.
T
Tyrone MeltonSep 12, 2025
How to fix low pan water level in EVAPCO Accessories?
- M
  Michael HillSep 12, 2025
  If the pan water level is low in your EVAPCO Accessories, it could be due to the electronic water level control float bulb not being set correctly. Refer to the EWLC Section for instructions. Alternatively, adjust the float ball up or down to achieve the proper water level. Note that the float ball is set to the operating level at the factory.
K
kayla88Sep 13, 2025
How to reduce fan noise in EVAPCO AT 19-56?
- M
  Michael CunninghamSep 13, 2025
  To address fan noise in EVAPCO Accessories, especially in induced draft models, check if the blade is rubbing inside the fan cylinder. If it is, adjust the cylinder to provide blade tip clearance.