WIRING
Figure 6
4.Remove white shaft coupler for
5.Connect wires according to wiring diagrams (Figures 7 thru 11). Note: Electrical connections should be made with generous loops of wire — approximately 6” per lead.
6.Replace white shaft coupler.
7. WARNING: It is possible to replace enclosure cover with adjustment knob 180 rotational degrees out of alignment resulting in large cali- bration errors. To avoid this, carefully follow these procedures.
A. Be sure that thermostat shaft is fully
shaft coupling.
B. With cover screws replaced and moderately fastened, check for full rotation of dial knob. Note: Mild shaft resistance should be
encountered. If satisfied, that proper engagement of
shaft coupler is accom- plished; finish tightening
cover screws.
8.Note: If load amperage or voltage rating exceeds switch
rating, a contactor must be used. Contactor and wiring to be supplied by customer (see
|
|
| Pilot Light |
| Pilot Light |
|
|
|
|
|
|
|
|
| |
Pilot |
|
|
|
|
|
|
|
Light |
|
|
|
| Load |
|
|
|
|
|
|
|
|
| |
| 1 |
| Load |
| 1 |
|
|
| 2 | Line | 1 |
|
|
| |
| Line | 2 |
|
| |||
| 3 |
| 2 | Line |
| ||
|
| 3 |
| ||||
| 4 |
| 3 |
|
|
| |
|
|
| 4 |
|
| ||
|
|
| 4 |
|
|
| |
Load |
|
|
|
|
|
| |
|
|
|
| Load |
|
| |
| Single Phase |
|
|
|
|
| |
|
| Single Phase |
|
|
|
| |
|
|
|
| Two Circuit |
|
| |
|
|
|
|
|
|
| |
| Figure 7 |
| Figure 8 |
| Figure 9 |
|
|
Line |
|
|
| Three Phase | Pilot |
|
|
|
|
|
|
|
| ||
|
|
|
| when Load | Light |
|
|
| 1 |
|
| Does Not | 1 | } |
|
|
|
| Exceed |
| |||
|
|
|
|
| |||
| 2 | Control | Three Phase | Rating of | 2 | Line | |
Contactor | Thermostat | 3 |
| ||||
3 | Voltage | and Single |
|
| |||
| 4 |
| Phase when |
| 4 |
|
|
|
| Load Exceeds |
|
|
| ||
|
|
|
|
|
| ||
| Pilot |
| Rating of |
|
|
|
|
|
| Thermostat |
|
|
|
| |
| Light |
|
|
|
|
|
|
Load |
|
|
|
|
|
|
|
| Figure 10 |
|
| Figure 11 |
|
|
CALIBRATION
WARNING: Hazard of Electric Shock. Extreme care should be exercised during calibration adjustments because of shock hazard due to exposed electrical terminals. Failure to comply can result in electrical shock or electrocution.
These controls are factory calibrated to the range indicated on the control adjustment knob.
If calibration is required, either one of two methods may be followed.
1.If accurate measurement standards are not available, the ther- mostat can readily be adjusted to a known temperature standard such as boiling water (212°). See Figure 13.
2.With the aid of an accurate thermometer or other temperature measuring device, recalibration may be performed within the process as in Figure 14.
For either method, the following general calibration procedures should be followed.
Figure 13