230 volt Cooler Control & Thermostat Retrofit Kit For Mastercool Plus or Contractors Series

(2 reviews) Write a Review
4.00 LBS
Adding to cart… The item has been added

Product Overview

For 230 volt application.

This kit can be used to replace the interior control box and thermostat combination on the Mastercool Plus or Mastercool Contractor's Series Cooler, some of which are now obsolete, including #P225101A, P225102A, P218301A, P218601A.
This kit consists of a new control box to be mounted on the outside of the cooler, a new plug receptacle box with wire leads for the inside of the cooler, a new 230 volt motor cord, and a new digital thermostat for inside the house. Requires rewiring of new plug receptacle box to new control box. Disconnect all power before attempting. Read all directions. Level of difficulty:medium.

You can read the control box and thermostat owner's/installation manual here.

Wiring Schematic for 230 volts

To maintain use of purge pump feature with standard pump, we recommend purchasing also an additional pump receptacle to tie in to the new control box.
230 volt pump receptacle

New cooler control is Dial part #7624. Features include:
Digital Evaporative Cooler Control with Thermostat
2 Speed 1/3 to 1 HP 115V/230V
Automatic start and stop for temperature comfort.
Automatically pad pre-wet.
Automatically adjusts from High to Low speed
Digital display with separate controller in water proof box.
Optional 2 / 4 / 8 hour timer.
Optional dump feature. (Use an extra standard cooler pump for timed water purge, like a Clean Machine.)
Motor rated 1HP @ 115V, 2HP @ 230V
Pump rated 2A @ 115VAC and 1A @ 230VAC
UL listed.


(2 reviews) Write a Review

2 Reviews Hide Reviews Show Reviews

  • 3
    Replacement controller/thermostat MASTERCOOL

    Posted by AZHTfreak on Apr 6th 2019

    It's a "Universal" kit, had to fab mounting brackets for the controller/plug box, else I would have had it installed in 25-30 minutes. 2 BIG problems with the thermostat: (1) LCD display isn't backlit, impossible to see without a flashlight in an interior hallway. (2) No way to manually select HI or LO fan speed when in COOL mode. Cannot disable AUTO. HI fan pushes too much air, LO fan would work much better, results in cooler air. Just give me a damn HI/LO switch please and get rid of the stupid AUTOMATIC mode. Way too complicated a solution for a swamp cooler thermostat. thus the 3 *s...

  • 5
    I received my order on time as promised. Installation is simple if you are familiar with electrical wiring.

    Posted by Jenny George on Sep 29th 2017

    thank you Indoor Comfort Supply