Adjusting the Set Point Stop - PENN Controls - A19AAT - Electromechanical Temperature Control - A19 Remote Bulb Control

A19AAT Type Cooling Thermostats for Portable Applications Installation Guide

PENN Controls
Product name
A19 Remote Bulb Control
Document type
Installation Guide
Part number
Document revision
Revision date

A19AAT type thermostats have an adjustable set point stop that may be set to limit the low cutout temperature adjustment. See Figure 1.

  • Risk of Electric Shock
  • Disconnect all electric power sources from the device before removing the device cover. Contact with internal components carrying hazardous voltage can cause electric shock and may result in severe personal injury or death.
  • Risque de décharge électrique
  • Déconnecter toutes les sources d'alimentation électrique de l'appareil avant de déposer le capot de l'appareil. Tout contact avec des composants internes conducteurs de tensions dangereuses risque d'entraîner une décharge électrique et de provoquer des blessures graves, voire mortelles.

To adjust and set the set point stop:

  1. Disconnect the thermostat plug from the power supply receptacle and remove the thermostat cover.
  2. Loosen the set point stop adjustment screw and move it along the set point stop bracket (while adjusting the temperature range dial) until the adjustment screw is positioned in the path of the appropriate set point stop adjustment step (Figure 1).
    Important: Always retighten the set point stop adjustment screw before putting the thermostat into operation. Failure to retighten the set point stop screw may cause the thermostat to lose calibration.

The set point stop temperature is indicated by the set point indicator.

Figure 1. Adjusting the Set Point Stop