Brochure
10 T-3100, T-3200, and T-3300 Series Controllers Product/Technical Bulletin
Temperature Setpoint Adjustment
For T-3100 and T-3200 Series follow
Steps 1 through 7.
1. Supply the instrument with the proper supply air
pressure.
2. Insert the test gauge (JC 5310, ordered separately) and
the probe assembly (JC 5361, ordered separately) into
the output test port.
Note: For Reverse Acting thermostats it will be necessary
to remove the cover in order to turn the setpoint
adjustment screw.
3. Turn the setpoint adjustment screw until the pressure
reading is approximately in the middle of the operating
range of the actuator. For example, a 5 to 10 psig
operating range would require an output pressure
reading of 7.5 psig.
4. Remove the test gauge and probe assembly.
5. Determine the temperature at the measuring element.
6. Place the dial on the dial post (do not tighten) and
position it to the temperature at the element. Remember
that each dial increment represents one Fahrenheit
degree. For models with concealed adjustment, use
recalibration tool
JC 5360 (ordered separately).
7. Tighten the dial and turn it to the desired setpoint.
Example: If the desired temperature setpoint is
75°F and the temperature at the
element is 71°F, then place the dial on
the dial post (do not tighten) and
position it to 71°F or four graduations
(75°F-71°F = 4°F) clockwise from the
middle graduation (75°F), the desired
setpoint.
Note: For T-3200 Series the low limit setpoint is 56°F.
Use calibration tool T-4002-5009 (ordered
separately). Each graduation is
9F° (5C°).
For T-3300 Series proceed as follows:
1. Supply the instrument with the appropriate air pressure
for the Direct Acting (DIR) operation.
2. Insert the test gauge (JC 5310, ordered separately) and
the probe assembly (JC 5361, ordered separately) into
the test port
(as illustrated in Figure 14).
3. Remove the knob and cover.
4. Turn the DIR screw until the output pressure is in the
middle of the actuator operating range.
5. Change the supply air pressure to that required for the
Reverse Acting (REV) operation.
6. Turn the REV adjusting screw until the output pressure
is in the middle of the actuator operating range.
7. Remove the test gauge and probe assembly.
8. Determine the temperature at the element.
9. Attach the cover.
10. Place the dial on the dial post (do not tighten) and
position it to the temperature at the element.
11. Tighten the dial and turn to the desired setpoint.
Note: If the setpoints of several instruments are to be
adjusted before switching the supply pressure, be
sure that the temperature at the element will not
change during both stages of adjustment.