Chromalox Electric Heater PD411 10 User Manual

®
Chromalox  
SERVICE REFERENCE  
Installation, Operation,  
DIVISION  
SALES  
4
SECTION TL  
Maintenance Instructions  
(Supersedes PD411-9)  
REFERENCE  
PD411-10  
and  
161-048529-001  
DATE  
AUGUST, 2008  
RENEWAL PARTS IDENTIFICATION  
Incorporates PD410-8 and PD413-6.  
These manuals have been discontinued.  
Type TLC, TLO, TLS, TLI, KTLC, KTLO, KTLS,  
KTLI, KBLC, KBLS, BLCK, & BLCS Series  
Industrial Over-The-Side Immersion Heaters  
Type KBLS  
Type TLC  
Type KTLC  
Shown above are Moisture Resistant Terminal Enclosures. Explosion Resistant Terminal Enclosure not shown.  
Note: Consult factory for specific installation instructions for heaters with additional features not detailed in this installation guide.  
Such additional features may include thermocouples supplied as a special order modification.  
GENERAL  
Safety Guidelines  
Read and follow these instructions to minimize risks of electric  
shock or fire. Save these instructions for future reference.  
The safety and performance of this heater is dependent on proper  
handling, installation, control and maintenance. As Chromalox can not  
anticipate all conditions under which this information and heater, or  
this heater in combination with other manufacturer’s products may be  
used, it is advised that you conduct your own tests to determine the  
safety and suitability of this heater in combination with other products  
in your application. Where the consequences of overheating or failure  
could result in personal injury or property damage, back-up controls  
and safety devices are essential.  
Chromalox Type TLC, TLO,TLS,TLI, KTLC, KTLO, KTLS,  
KTLI, KBLC, KBLS, BLCK, & BLCS series industrial Over-The-  
Side immersion heaters are designed for a wide variety of heating  
applications.  
1. Heater Construction Characteristics  
A. High quality resistance wire held in place by compacted  
Magnesium Oxide Refractory or compacted proprietary  
cement enclosed in a wide variety of sheath materials.  
B. Low to high watt densities.  
The Safety Alert Symbol:  
is found throughout these installa-  
tion instructions to identify potential hazards that can result in person-  
al injury. The seriousness of the potential risk is identified by one of  
these three words:  
C. Standard selection of sheath materials include copper, steel,  
INCOLOY® alloy and stainless steel. This broad selection of  
sheath materials will operate successfully in many corrosive  
solutions.  
– will result in serious injury or death.  
!
– could result in serious injury or death.  
WARNING  
!
– may result in minor or moderate injury.  
© 2010 Chromalox, Inc.  
 
SPECIFICATIONS (cont’d.)  
KTLC, KTLI, KTLO, KTLS  
Section A-A  
(B)  
(A)  
Min. Tank  
Clearance  
(A)  
A
A
(B)  
(B)  
Figure 2  
Figure 1  
Specifications –  
Dimensions (In.)  
(A) Standard (B) Min.  
Element  
Tank Opening Arrange-  
No.  
No.  
Sheath  
Riser  
Model  
Elements Phase  
Volts  
kW  
Model  
Elements  
Phase  
Volts  
kW  
Material  
Height  
Clearance  
ment  
KTLC-210  
KTLC-212  
2
2
1
1
240-480  
240-480  
10  
12  
KTLC-315  
KTLC-318  
3
3
1 or 3Δz  
1 or 3Δz  
240-480  
240-480  
15  
18  
Copper  
Copper  
48  
48  
21-1/4  
23-1/2  
Fig. 2  
Fig. 2  
1 or 3Δz  
1 or 3Y  
120-240  
480  
KTLC-220  
2
1
120-240-480  
2
KTLC-330  
3
3
Copper  
36  
10-5/8  
Fig. 1  
KTLC-240  
KTLC-260  
KTLC-280  
2
2
2
1
1
1
120-240-480  
120-240-480  
240-480  
4
6
8
KTLC-360  
KTLC-390  
KTLC-312  
3
3
3
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
120-240-480  
120-240-480  
240-480  
6
9
12  
Copper  
Copper  
Cooper  
36  
36  
36, 48  
13-3/4  
16-1/8  
18-5/8  
Fig. 2  
Fig. 2  
Fig. 2  
KTLI-210  
KTLI-212  
2
2
1
1
240-480  
240-480  
10  
12  
KTLI-315  
KTLI-318  
3
3
1 or 3Δ  
1 or 3Δ  
240-480  
240-480  
15  
18  
Incoloy  
Incoloy  
48  
48  
21-1/4  
23-1/2  
Fig. 2  
Fig. 2  
1 or 3Δ  
1 or 3Y  
120-240  
480  
KTLI-220  
2
1
120-240-480  
2
KTLI-330  
3
3
Incoloy  
36  
10-5/8  
Fig. 1  
KTLI-240  
KTLI-260  
KTLI-280  
2
2
2
1
1
1
120-240-480  
120-240-480  
240-480  
4
6
8
KTLI-360  
KTLI-390  
KTLI-312  
3
3
3
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
120-240-480  
120-240-480  
240-480  
6
9
12  
Incoloy  
Incoloy  
Incoloy  
36  
36  
36, 48  
13-3/4  
16-1/8  
18-5/8  
Fig. 2  
Fig. 2  
Fig. 2  
KTLO-220  
KTLO-230  
KTLO-240  
KTLO-250  
KTLO-260  
KTLO-270  
2
2
2
2
2
2
1
1
1
1
1
1
120-240-480  
120-240-480  
120-240-480  
120-240-480  
120-240-480  
240-480  
2
3
4
5
6
7
KTLO-330  
KTLO-345  
KTLO-360  
KTLO-375  
KTLO-390  
KTLO-310  
3
3
3
3
3
3
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
120-240-480  
120-240-480  
120-240-480  
120-240-480  
120-240-480  
240-480  
3
4.5  
6
7.5  
9
10  
Steel  
Steel  
Steel  
Steel  
Steel  
Steel  
36  
36  
36, 48  
48  
48  
48  
13-3/4  
16-1/8  
18-5/8  
21-1/4  
23-1/2  
24-7/8  
Fig. 2  
Fig. 2  
Fig. 2  
Fig. 2  
Fig. 2  
Fig. 2  
KTLS-210  
KTLS-212  
2
2
1
1
240-480  
240-480  
10  
12  
KTLS-315  
KTLS-318  
3
3
1 or 3Δ  
1 or 3Δ  
240-480  
240-480  
15  
18  
Stainless Steel  
Stainless Steel  
48  
48  
21-1/4  
23-1/2  
Fig. 2  
Fig. 2  
1 or 3Δ  
1 or 3Y  
120-240  
480  
KTLS-220  
2
1
120-240-480  
2
KTLS-330  
3
3
Stainless Steel  
36  
10-5/8  
Fig. 1  
KTLS-240  
KTLS-260  
KTLS-280  
2
2
2
1
1
1
120-240-480  
120-240-480  
240-480  
4
6
8
KTLS-360  
KTLS-390  
KTLS-312  
3
3
3
1 or 3Δ  
1 or 3Δ  
1 or 3Δ  
120-240-480  
120-240-480  
240-480  
6
9
12  
Stainless Steel  
Stainless Steel  
Stainless Steel  
36  
36  
36, 48  
13-3/4  
16-1/8  
18-5/8  
Fig. 2  
Fig. 2  
Fig. 2  
KBLC, KBLS  
Specifications –  
DIMENSIONS  
Inches  
(A)  
(B)  
Kw  
(11 WPSI)  
Riser  
Height  
Min. Opening  
Clearance  
Model  
Volts  
Type KBLC – Steel Construction  
KBLC-24  
120 or 240  
120 or 240  
120 or 240  
240 only  
240 only  
240 only  
2.2  
2.2  
2.2  
4.4  
4.4  
4.4  
36  
36  
36  
36  
36  
36  
12-3/4  
12-3/4  
12-3/4  
17-3/4  
17-3/4  
17-3/4  
KBLC-24T2  
KBLC-24T3  
KBLC-28  
(A)  
KBLC-28T2  
KBLC-28T3  
Type KBLS – Stainless Steel Construction  
KBLS-244  
120 or 240  
120 or 240  
120 or 240  
120 or 240  
240 only  
2.2  
2.2  
2.2  
2.2  
4.4  
4.4  
4.4  
4.4  
36  
36  
36  
36  
36  
36  
36  
36  
12-3/4  
12-3/4  
12-3/4  
12-3/4  
17-3/4  
17-3/4  
17-3/4  
17-3/4  
KBLS-244T1  
KBLS-244T2  
KBLS-244T3  
KBLS-288  
KBLS-288T1  
KBLS-288T2  
KBLS-288T3  
240 only  
240 only  
240 only  
(B)  
3
 
SPECIFICATIONS (cont’d.)  
1-1/4” Pipe Opening  
C
BLCK, BLCS  
L
of Mtg. Hole  
same as Dim. “A”  
1-1/4” Ground Joint  
Malleable Iron Union  
Type BLCK-MH  
Suspension Bracket  
(4-5/32)  
1-1/4” Round  
Floor Flange  
(A)  
Malleable Iron  
(C)  
(A)  
Type BLCS  
4 to 12 Blades  
(C)  
1-1/4” Steel  
Pipe Riser  
4 to 12 Blades  
(B)  
(B)  
Specifications –  
Model  
Kilowats  
Fuel Oil  
12 W/in2  
Dimensions (In.)  
(B) Min. Tank  
Riser Height Opening Clearance  
No.  
Blades  
Regular Oil  
18 W/in2  
(A)  
Phase  
40 W/in2  
Voltage  
(C)  
BLCK-MH618  
BLCK-MH824  
BLCK-MH103  
BLCK-MH236  
6
8
10  
12  
1 or 3  
1 or 3 ⌬  
1 or 3 ⌬  
1 or 3 ⌬  
12  
16  
20  
24  
7.5  
10  
12.5  
15  
240 or 480  
240 or 480  
240 or 480  
240 or 480  
144  
144  
144  
144  
16-1/2  
16-1/2  
16-1/2  
16-1/2  
8-7/8  
12  
15-1/8  
18-1/4  
BLCS-618  
BLCS-824  
BLCS-1030  
BLCS-1236  
6
8
10  
12  
1 or 3 ⌬  
1 or 3 ⌬  
1 or 3 ⌬  
1 or 3 ⌬  
12  
16  
20  
24  
7.5  
10  
12.5  
15  
240 or 480  
240 or 480  
240 or 480  
240 or 480  
144  
144  
144  
144  
34  
34  
34  
34  
8-7/8  
12  
15-1/8  
18-1/4  
electric heating equipment. Where the conse-  
quences of failure could result in personal injury or  
property damage, back-up controls are essential.  
FIRE HAZARD. An integral thermostat, if provided,  
is designed for temperature control service only.  
Because the thermostat does not fail safe, it should  
not be used for temperature limiting duty. Wiring to  
this device is the responsibility of the user.  
FIRE/EXPLOSION HAZARD. Use only Explosion  
Resistant Enclosures (E2, E3 or ER) in hazardous  
atmospheres where flammable vapors, gases, liquids  
or other combustible atmospheres are present as  
defined in the National Electrical Code (NFPA 70).  
Failure to comply could result in personal injury or  
property damage.  
The system designer is responsible for the safety  
of this equipment and should install adequate  
back-up controls and safety devices with their  
INSTALLATION  
7. When melting solids by direct immersion, a surface vent should be  
provided to allow gases to escape. Operate the heater on half volt-  
age until melted material completely covers the heater area.  
8. A drip loop is recommended to minimize passage of moisture  
along wiring into terminal enclosure and connections.  
ELECTRIC SHOCK HAZARD. Disconnect all power  
before installing or servicing heater. Failure to do  
so could result in personal injury or property dam-  
age. Heater must be installed by a qualified person  
in accordance with the National Electrical Code,  
NFPA 70.  
FIRE HAZARD. Since heaters are capable of developing  
high temperatures, extreme care should be taken to:  
A. Use explosion-resistant terminal enclosures in hazardous loca-  
tions. Consult Chromalox for selection of explosion-resistant  
terminal enclosures for hazardous locations.  
1. Before installing, check your Over-The-Side heater for any dam-  
age that may have occurred during shipment. Also, check to ensure  
that the line voltage is the same as that stamped on the nameplate.  
2. Do not bend heating elements. If bending is necessary, consult factory.  
3. IMPORTANT: Mount the heater in the tank so that the liquid  
level will always be above the effective heated portion of the  
heater. If the heater is not properly submerged, it will overheat and  
damage the heating elements and create a possible fire hazard due  
to excessive sheath temperatures. See “Warning” under  
“Installation” section. (see Figure 3).  
B. Avoid contact between heater and combustible materials.  
C. Keep combustible materials far enough away to be free of the  
effects of high temperatures.  
!
FREEZE HAZARD. Some Over-The-Side heaters are  
equipped with a thermowell for process control or  
over-temperature control. Do not allow moisture to  
accumulate in thermowell. Freezing temperatures  
can cause damage that may result in the heated  
medium leaking into terminal enclosure.  
4. Heater must be supported from tank bottom. Heater must not be  
operated in sludge. Sludge legs can be provided. Assemble as  
shown in Figure 3.  
5. Where work will pass over or near equipment, additional protec-  
tion, such as a metal guard, may be needed.  
6. In the electroplating operation the heaters are not, under any cir-  
cumstance, to be placed between the electrodes and the work.  
4
 
INSTALLATION (cont’d.)  
9. To prevent moisture accumulation in cryogenic applications or  
when heater is exposed to freezing temperatures:  
A. Slope conduit away from enclosure (drip loop).  
B. Seal all conduit openings to moisture/explosion resistant ter-  
minal enclosure.  
FIRE OR EXPLOSION HAZARD. If the heater is not  
properly submerged, the heating elements will over-  
heat and could result in a fire or damaged equipment.  
C. Insulate terminal enclosure.  
NOTE: If heating in closed vessels, controls and  
backup controls must be used to prevent buildup of  
temperature and/or pressure. Maximum pressure  
rating is 50 PSI.  
FIRE OR SHOCK HAZARD. Moisture accumulation  
in the element refractory material, element over-  
temperature, or sheath corrosion can cause  
ground fault to the element sheath, generating arc-  
ing and molten metal. Install Ground Fault Circuit-  
Interrupter (GFCI) to prevent personal injury or  
Equipment Ground Fault Protection to prevent  
property damage.  
Suitable Wiring  
Drip Loop recommended to  
minimize passage of moisture  
along wiring into terminal  
wiring connections.  
Expected Low Liquid Level  
10. Heaters with floor flange:  
A. Remove electrical enclosure.  
B. Mount heater to tank or manhole cover.  
C. Install electrical enclosure.  
6 to 8"  
Always maintain a minimum of  
Minimum  
6 to 8" of liquid above the heated  
portion of the element to prevent  
exposure of the effective  
heated length.  
!
Expected maximum  
Fittings into electrical enclosure must be properly  
sealed to prevent contamination of electrical con-  
tacts from vapors.  
Sludge Legs  
sediment level  
NOTE: Locate the heater as low as possible for maximum  
heated liquid storage capacity. Heat does not move downward.  
FIGURE 3 Open Tank Illustration  
WIRING  
6. Heaters are prewired and tagged for easy installation of electrical  
wiring to the heater. Tagging of the individual circuits of  
Chromalox Industrial Over-The-Side Immersion heaters is shown  
in the following tabulations. Refers to Type TLC, TLO, TLS, TLI,  
KTLC, KTLO, KTLS, KTLI, KBLC, KBLS, BLCK, and BLCS  
Series heaters.  
7. Make sure heater, is grounded by attaching ground conductor,  
traceable back to service entrance, to the ground terminal located  
inside the terminal enclosure. If heater is used in an electroplating  
tank, the heater should be grounded externally to the tank wall to  
minimize stray plating currents in heater sheath that may cause  
sheath corrosion.  
ELECTRIC SHOCK HAZARD. Any installation involv-  
ing electric heaters must be performed by a quali-  
fied person and must be effectively grounded in  
accordance with the National Electrical Code to  
eliminate shock hazard.  
1. Electric wiring to heater must be installed in accordance with the  
National Electrical Code and with local codes by a qualified per-  
son. CAUTION: Use copper conductors only.  
2. When element wattages are not equal, heaters must not be con-  
nected in series.  
8. Check for loose terminal connections and tighten if necessary.  
Made to order items are prewired and tagged at the factory. Wiring  
of made to order items may differ from those shown in the tabu-  
lations. Carefully check voltage and phase on the heater name-  
plate and select either the appropriate wiring shown above or  
check for the appropriate wiring diagram in the heater termi-  
nal enclosure. For reference purposes, some typical wiring dia-  
grams are shown in the following figures.  
3. Electrical wiring to heater should be contained in rigid conduit or  
in sealed flexible conduit to keep corrosive vapors and liquids out  
of the terminal enclosure. If high humidity is encountered, the con-  
duit should slope away from the heater.  
4. If flexible cord is employed, a watertight connector should be used  
for entry of the cord into the terminal enclosure. Outdoor applica-  
tions require liquid-tight conduit and connectors.  
5. Bring the power line wires through the opening in the terminal  
enclosure.  
WIRING DIAGRAMS – TLC, TLO, TLS, TLI  
120V 120V 240V 240V 480V 480V 480V  
120V 120V 240V 240V 480V 480V 480V  
Model  
1ø  
Δz  
1ø  
Δz  
1ø  
Δz 3øY  
Model  
1ø  
Δz  
1ø  
Δz  
1ø  
Δz 3øY  
Fig.  
Fig. Fig.  
Fig. Fig.  
Fig. Fig.  
Fig.  
Fig.  
Fig.  
Fig.  
Fig.  
Fig. Fig.  
TLC, TLI and TLS 210  
TLC, TLI and TLS 212  
TLC, TLI, TLO and TLS 220  
TLO 230  
TLC, TLI, TLO and TLS 240  
TLO 250  
TLC, TLI, TLO and TLS 260  
TLO 270  
TLC, TLI and TLS 280  
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
TLO 310  
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
3
3
3
3
5
3
3
3
3
4
4
4
4
4
4
4
4
4
6
TLC, TLI and TLS 312  
TLC, TLI and TLS 315  
TLC, TLI and TLS 318  
TLC, TLI, TLO and TLS 330  
TLO 345  
1
1
4
4
4
4
4
1
3
1
TLC, TLI, TLO and TLS 360  
TLO 375  
TLC, TLI, TLO and TLS 390  
3
3
3
Note: Use wire size and type specified by NEC.  
480V heaters require 600V wire per NEC.  
480V heaters require a contactor.  
Contactor and wiring supplied by customer.  
5
 
WIRING DIAGRAMS – KTLC, KTLO, KTLS, KTLI  
120V 120V 240V 240V 480V 480V 480V  
120V 120V 240V 240V 480V 480V 480V  
Model  
1ø  
Δz  
1ø  
Δz  
1ø  
Δz 3øY  
Model  
1ø  
Δz  
1ø  
Δz  
1ø  
Δz 3øY  
Fig.  
Fig. Fig.  
Fig. Fig.  
Fig. Fig.  
Fig.  
Fig.  
Fig.  
Fig.  
Fig.  
Fig. Fig.  
KTLC, KTLI and KTLS 210  
KTLC, KTLI and KTLS 212  
KTLC, KTLI, KTLO and KTLS 220  
KTLO 230  
KTLC, KTLI, KTLO and KTLS 240  
KTLO 250  
KTLC, KTLI, KTLO and KTLS 260  
KTLO 270  
KTLC, KTLI and KTLS 280  
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
KTLO 310  
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
3
3
3
3
5
3
3
3
3
4
4
4
4
4
4
4
4
4
6
KTLC, KTLI and KTLS 312  
KTLC, KTLI and KTLS 315  
KTLC, KTLI and KTLS 318  
KTLC, KTLI, KTLO and KTLS 330  
KTLO 345  
1
1
4
4
4
4
4
1
3
1
KTLC, KTLI, KTLO and KTLS 360  
KTLO 375  
KTLC, KTLI, KTLO and KTLS 390  
3
3
3
Note: Use wire size and type specified by NEC.  
480V heaters require 600V wire per NEC.  
480V heaters require a contactor.  
Contactor and wiring supplied by customer.  
WIRING DIAGRAMS – BLCK, BLCS  
120V 120V 240V 240V 480V 480V 480V  
120V 120V 240V 240V 480V 480V 480V  
Model  
1ø  
Δz  
1ø  
Δz  
1ø  
Δz 3øY  
Model  
1ø  
Δz  
1ø  
Δz  
1ø  
Δz 3øY  
Fig.  
Fig. Fig.  
Fig. Fig.  
Fig. Fig.  
Fig.  
Fig.  
Fig.  
Fig.  
Fig.  
Fig. Fig.  
BLCK  
1
4
1
4
BLCS  
7
8
7
8
Note: Use wire size and type specified by NEC.  
480V heaters require 600V wire per NEC.  
480V heaters require a contactor.  
Contactor and wiring supplied by customer.  
Factory  
Field  
Factory  
Field  
Term. Block  
Contactor  
Term. Block  
Contactor  
L1  
L2  
L1  
L2  
120V  
or  
120V  
or  
240V  
240V  
Junction Box  
Junction Box  
Low  
Low  
Liquid  
Control  
Thermostat  
Liquid  
Control  
Thermostat  
WIRING DIAGRAM 2  
WIRING DIAGRAM 1  
Factory  
Field  
Factory  
Field  
Term. Block  
Term. Block  
Contactor  
Contactor  
L1  
L2  
L3  
L1  
L2  
120V  
or  
240V  
120V  
or  
240V  
Junction Box  
Junction Box  
Low  
Low  
Liquid  
Thermostat  
Liquid  
Control  
Thermostat  
Control  
WIRING DIAGRAM 3  
WIRING DIAGRAM 4  
6
 
Factory  
Field  
Factory  
Field  
Term. Block  
Contactor  
Term. Block  
Contactor  
L1  
L2  
L1  
L2  
L3  
120V  
or  
240V  
120V  
or  
Junction Box  
240V  
Low  
Junction Box  
Liquid  
Control  
Thermostat  
Low  
Liquid  
Control  
Thermostat  
WIRING DIAGRAM 5  
WIRING DIAGRAM 6  
Factory  
Field  
Factory  
Field  
Term. Block  
Contactor  
Term. Block  
Contactor  
L1  
L1  
L2  
L3  
L2  
120V  
or  
240V  
120V  
or  
Junction Box  
Junction Box  
240V  
Low  
Liquid  
Control  
Thermostat  
Low  
Thermostat  
Liquid  
Control  
WIRING DIAGRAM 7  
WIRING DIAGRAM 8  
OPERATION  
1. Do not operate heater at voltages in excess of that stamped on the  
assemblies or 20 megohm on individual unsealed elements. It is  
recommended that heaters with 1 megohm or less be dried out  
before applying full power. If dried properly, low megohm will not  
effect heater life or efficiency.  
To correct a low megohm condition, remove terminal enclosure  
cover, gaskets, and terminal hardware. Bake heaters in an oven at  
300 to 500˚F for several hours or preferably overnight.  
An alternate procedure is to cycle the heater in 10 to 15 minute  
periods at low voltage until megohm values are normal. Sheath  
temperatures should not exceed 350˚F.  
heater since excess voltage will shorten heater life.  
2. Always maintain a minimum of 6 to 8” of liquid above the heated  
portion of the element to prevent exposure of the effective heated  
length. If the heater is not properly submerged, it will overheat and  
shorten heater life. DO NOT OPERATE HEATER IF DRY.  
3. Keep heating elements above sediment deposits.  
4. Low Megohm Condition — The refractory material used in elec-  
tric heaters may absorb moisture during transit, storage or when  
subject to humid environments that will reduce the cold insulation  
resistance (low megohm). Low megohm may result in a high leak-  
age current to ground and nuisance trips of ground fault protection  
equipment. Normally, the megohm value increases after heat-up.  
Typical insulation valves are 5 megohm or greater on complete  
NOTE: Low megohm on heating elements with epoxy or hermetic  
seals cannot be serviced in the field. Typical resistance val-  
ues when sealed are 200 megohm or greater. Contact Chro-  
malox service center at number listed.  
7
 
MAINTENANCE  
Note: User is responsible for maintenance schedule based on their  
knowledge of the heated medium and operating conditions.  
3. Remove any accumulated sludge deposits from heater and from  
tank.  
ELECTRIC SHOCK HAZARD. Disconnect all power  
before installing or servicing heater. Failure to do so  
could result in personal injury or property damage.  
4. Check for loose terminal connections.  
5. If corrosion is indicated in the terminal enclosure, check termi-  
nal enclosure gasket and replace if necessary. Check conduit  
layout to correct conditions that allow corrosion to enter the ter-  
minal enclosure.  
1. Heaters should be checked periodically for coatings and corrosion  
and cleaned if necessary.  
2. The tank should be checked regularly for sediment around the  
heater as sediment can act as an insulator and shorten heater life.  
Note: Applies to all items, not just #2.  
6. Clean terminal ends of all contamination.  
RENEWAL PARTS  
1. Thermostat Kit (order by PCN):  
Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132-012603-004  
Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .080-012602-001  
4 Post Terminal Block . . . . . . . . . . . . . . . . . . . . . . .303-001843-001  
3 Post Terminal Block . . . . . . . . . . . . . . . . . . . . . . .303-006621-003  
Thermostat Mounting Bracket . . . . . . . . . . . . . . . . .027-072456-001  
A.0-100°F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PCN 277835  
B.60-250°F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PCN 277819  
2. Thermostat Knob:  
A.0-100°F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169-019605-002  
B.60-250°F . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169-019604-001  
C. 200-550˚F . . . . . . . . . . . . . . . . . . . . . . . . . . . .169-019604-002  
3. Sludge Legs:  
4. Thermostat  
A.0-100°F (84” Capillary) . . . . . . . . . . . . . . . . . .300-048518-005  
B.60-250°F (84” Capillary) . . . . . . . . . . . . . . . . .300-048518-002  
C. 200-550˚F (84” Capillary) . . . . . . . . . . . . . . . .300-048518-004  
D.0-100°F (144” Capillary) . . . . . . . . . . . . . . . . .300-048518-019  
E. 60-250°F (180” Capillary) . . . . . . . . . . . . . . . .300-048518-022  
F. 200-550˚F (180” Capillary) . . . . . . . . . . . . . . .300-048518-023  
A.TLC, KTLC Series . . . . . . . . . . . . . . . . . . . . . .176-114713-001  
B.TLI, KTLI Series . . . . . . . . . . . . . . . . . . . . . . .176-114713-001  
C.TLO, KTLO Series . . . . . . . . . . . . . . . . . . . . . .176-114713-002  
D.TLS, KTLS Series . . . . . . . . . . . . . . . . . . . . . .176-114713-003  
Limited Warranty:  
Please refer to the Chromalox limited warranty applicable to this product at  
2150 N. RULON WHITE BLVD., OGDEN, UT 84404  
TA -V7 - EF  
Litho in U.S.A.  
Phone: 1-800-368-2493  
 

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