Chromalox Thermostat PK413 4 User Manual

Installation, Operation  
and  
4
AR  
(Supersedes PK413-3)  
PK413-4  
161-562791-001  
RENEWAL PARTS IDENTIFICATION  
SEPTEMBER, 1995  
Type AR-EP Industrial Explosion-Resistant  
Thermostat  
41/  
4
4”  
Connect Power  
Supply Here  
81/  
4
61/  
2
Connect Load  
Here  
Dial  
Stop  
Post  
4 3/32"  
Shaft Shown  
In "Off" Position  
(Without Calibrated Cap)  
2 9/32"  
221/32"  
217  
/
32  
"
Specifications – Table A  
Sensing Bulb  
Temperature  
Range  
(°F)  
Approx. Capillary  
Length Length  
Max.  
A.C. Rating  
(Amps)  
Dia.  
(In.)  
Model  
Style  
(In.)  
(Ft.)  
AR-115EP  
AR-115AEP  
AR-115CEP  
AR-214EP  
AR-214DEP  
AR-215EP  
AR-215AEP  
AR-219EP  
AR219DEP  
AR-514EP  
7
11  
16  
/
"
Calibration Cap  
0 – 100  
5
0.375  
43/  
8
2
White Nylon  
Universal Coupler  
12  
7
30 Amp  
120-277 VAC  
4
5
0.250  
0.375  
55/  
32  
Set Screw Lock  
15  
7
60 – 250  
4
2
Length  
(Refer to Specifications —  
Table A)  
7
9
4
0.188  
0.250  
103/  
55/  
4
15  
7
250 VA  
120-277 VAC  
(Pilot Duty)  
8
AR-515EP  
7
200 – 550  
300 – 700  
5
9
0.375  
0.188  
35/  
8
AR-515AEP  
AR-519EP  
AR-519DEP  
AR-715EP  
AR-715DEP  
AR-719EP  
2
7
9
15  
7
5
5
9
0.375  
0.375  
0.188  
311/  
16  
Figure 1  
15  
7
12  
© 2010 Chromalox, Inc.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
WIRING  
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 counter-clockwise (see  
Figure 12). With thermostat knob held in the indicated OFF  
position, carefully replace enclosure cover while feeling for  
proper engagement of  
shaft coupling.  
B. With cover screws replaced  
and moderately fastened,  
check for full rotation of  
dial knob. Note: Mild shaft  
Dial  
resistance should be  
encountered. If satisfied,  
that proper engagement of  
shaft coupler is accom-  
plished; finish tightening  
cover screws.  
Stop  
Post  
Figure 6  
Stop  
Tab  
4. Remove white shaft coupler for safe-keeping while making  
wiring connections (see Figure 6).  
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.  
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  
Figure 12  
6. Replace white shaft coupler.  
Pilot Light  
Pilot Light  
Pilot  
Light  
Load  
1
2
3
4
Load  
1
2
3
4
1
Line  
Line  
Line  
2
3
4
Load  
Load  
Single Phase  
Single Phase  
Two Circuit  
Figure 8  
Figure 9  
Figure 7  
Line  
Contactor  
Load  
Pilot  
Light  
Three Phase  
when Load  
Does Not  
Exceed  
1
2
3
4
1
2
3
4
Rating of  
Line  
Three Phase  
Control  
Voltage  
Thermostat  
}
and Single  
Phase when  
Load Exceeds  
Rating of  
Pilot  
Light  
Thermostat  
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.  
Figure 13  
For either method, the following general calibration procedures  
should be followed.  
-3-  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CALIBRATION  
DANGER: Calibration will involve exposure of inter-  
nal control terminals to ambient conditions during  
some part of the recalibration procedure.  
Combustible materials which cause hazardous  
conditions must not be present during recalibra-  
tion process — otherwise explosion may result.  
Thermometer  
1. Heat water bath or the equipment in which the control is  
installed (tank, die, platen or machine) to the selected calibra-  
tion temperature. The entire sensing bulb and at least one foot  
of its capillary tube are to be exposed to calibrating tempera-  
ture. With thermostat energized, allow process or bath to reach  
setpoint. This is accomplished when thermostat begins cycling  
action.  
2. Compare adjustment knob cut off temperature indication  
against actual temperature to which sensing bulb is exposed.  
Figure 15 shows example of a control knob showing a control  
indication of 250°F when true process temperature measured  
230°F. In this example, the control knob must be rotated 20°  
counterclockwise to bring the 230°F knob marking under the  
index mark in order to recalibrate the control.  
Load (Tank, vat, die or platen)  
Indicated Temp.  
Figure 14  
True Temp  
250  
3. Without disturbing the shaft setting, loosen the thermostat  
knob set-screw and re-align dial setting accordingly. Retighten  
knob set-screw.  
4. Recheck for thermostat operation as per steps 2 and 3 and make  
further calibration adjustment if indicated.  
5. Recheck of thermostat operation following final adjustment  
completes the calibration procedure.  
IMPORTANT: Under no circumstances must the temperature  
range, and in particular, the maximum temperature setting of con-  
trol be increased above maximum temperature indicated on control  
nameplate. Such changes voids U.L. listing of the control.  
Figure 15  
THERMOSTAT SUB ASSEMBLY REPLACEMENT  
1. Before removing enclosure cover, turn thermostat knob to the  
OFF position (counterclockwise). Place a piece of masking  
tape over the knob to keep it in the OFF position.  
2. Remove the enclosure cover by removing four fastening  
screws (Figure 5).  
3. Remove the white shaft coupler for safe-keeping.  
4. Remove the thermostat mounting screws (2).  
5. Loosen the capillary-seal retaining cap set screws and then  
remove the retaining cap.  
11. Recheck for proper capillary length (external to enclosure) and  
adjust if necessary.  
12. Align spacer plate and replacement thermostat to mounting  
holes in the bottom of enclosure using mounting screws (2 –  
#10-32 x 3/  
Lg.) to secure thermostat to enclosure.  
8
13. Slide the capillary seals into the capillary fitting making sure  
the capillary is positioned in the center groove of the seals.  
WARNING:If capillary is not located in the cen-  
ter groove properly, damage to the capillary will  
result, rendering the thermostat inoperable or  
unreliable.  
Note: Do not remove the entire capillary seal fitting from the  
enclosure.  
6. Remove the capillary seals and thermostat from the enclosure.  
7. Remove the calibration cap (Figure 1) and insert pin from the  
old thermostat. Rotate the position of the calibration cap, for  
use in the next step.  
14. Replace capillary seal retaining cap and tighten set screws to  
lock in position.  
Note: Per the NEC, all threaded connections in a hazardous  
environment must be tightened sufficiently to engage five full  
threads.  
8. With replacement thermostat in the OFF position (shaft complete-  
ly counterclockwise), install insert pin and calibration cap. Install  
calibration cap with same orientation as noted in step 7 above.  
9. If excess capillary, on old thermostat, had been coiled in enclo-  
sure, it may be necessary to coil an equal amount on replace-  
ment thermostat per step 4D mounting instructions.  
10. After proper capillary length is obtained on replacement ther-  
mostat, insert capillary in the enclosure and thru the capillary  
seal fitting.  
15. Rewire replacement thermostat per appropriate wiring dia-  
grams (Figures 7 thru 11).  
16. Replace the white nylon coupling on the calibration cap and  
enclosure cover per step 7 of the wiring section.  
17. Replacement thermostat control should be monitored to insure  
proper operation. If calibration is required, see the calibration  
section for instructions.  
-4-  
Download from Www.Somanuals.com. All Manuals Search And Download.  
RENEWAL PARTS IDENTIFICATION  
Thermostat  
Sub Assembly  
Model  
Control Knob  
AR-115EP  
AR-115AEP  
AR-115CEP  
AR-214EP  
AR-214DEP  
AR-215EP  
AR-215AEP  
AR-219EP  
AR-219DEP  
AR-514EP  
AR-515EP  
AR-515AEP  
AR-519EP  
AR-519DEP  
AR-715EP  
AR-715DEP  
AR-719EP  
300-027566-001  
300-027566-014  
300-027566-012  
300-027566-004  
300-027566-015  
300-027566-009  
300-027566-007  
300-027566-002  
300-027566-016  
300-027566-005  
300-027566-008  
300-027566-006  
300-027566-003  
300-027566-018  
300-027566-010  
300-027566-011  
300-027566-013  
169-019605-002  
169-019605-002  
169-019605-002  
169-019604-001  
169-019604-001  
169-019604-001  
169-019604-001  
169-019604-001  
169-019604-001  
169-019604-002  
169-019604-002  
169-019604-002  
169-019604-002  
169-019604-002  
169-019605-001  
169-019605-001  
169-019605-001  
Parts Common to All  
Part  
Part Number  
Capillary Seal Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119-053954-001  
White Nylon Coupler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .079-512424-001  
-5-  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Limited Warranty:  
Please refer to the Chromalox limited warranty applicable to this product at  
1347 HEIL QUAKER BLVD., LAVERGNE, TN 37086  
Phone: (615) 793-3900  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Blue Rhino Patio Heater GWU9209W User Manual
Bogen Stereo Amplifier UTI1 AUX User Manual
Bowens Portable Generator BW7640 User Manual
Briggs Stratton Pressure Washer 1903 User Manual
Bushnell Telescope 78 9945 User Manual
Cadillac Automobile 2006 DTS User Manual
Campbell Hausfeld Saw DG411200CK User Manual
Cellular Innovations Bluetooth Headset HFBLU LT100 User Manual
Chicago Electric Cordless Drill 67089 User Manual
CH Tech Network Card PX453S User Manual