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INSTALLATION

WARNING: 

Hazard of Electric Shock. Disconnect all

power before installing heater.

1.

Position slots in clamping band over terminal posts on heating
elements. 

Note:

Terminal hardware must be removed to allow

clamping band slots to fit over terminal posts (Figure 1).

2.

When heater band is correctly placed in the desired location, 
compress ends of band together and insert bolt through non-
threaded trunnion socket and then into opposite threaded sock-
et. Hand tighten (Figure 2).

3.

Turn Allen head bolt with 7/32” Allen wrench to draw heater
band tight on cylinder. Ensure that there is good contact

between heating element and cylinder and that there is electri-
cal clearance between the heater terminals and the clamping
band (Figure 1).

4.

DANGER: 

Hazard of Fire.

Since these heaters are capa-

ble of developing high temperatures, extreme care should be
taken to:

A.

Avoid installing heaters in an atmosphere containing com-
bustible gases and vapor.

B.

Avoid contact between heater and combustible material.

C.

Keep combustible materials far enough away to be free of
effects of high temperature.

Figure 1

Figure 2

Figure 3

WIRING

WARNING: 

Hazard of Electric Shock. Any installation

involving electric heaters must be effectively ground-
ed in accordance with the National Electical Code to
eliminate shock hazard.

1. Rough-in Wiring 

— Wiring to heater should be to the volt-

age specified on heater band and in accordance with local and
National Electrical codes by a qualified person. As a guide in
determining line wire sizes see Amperes in Specifications
Table A on page 1. 

WARNING:

Use copper conduc-

tors only.

2.

Assemble terminal hardware and wiring in the order shown in
Figure 5.

3.

Protection with proper size fuses and breakers is important to
minimize hazards.

WARNING: 

Do not exceed 25 inch pounds of torque

when tightening the hex nuts on the heater termi-
nals. Excessive torque will result in stripping the
terminals from the refractory of the heating ele-
ment.

4.

For rated output for heater band, connect heating elements in
parallel. 240V elements to be run on 480V should be connect-
ed in series. When element wattages are not equal, heaters
must not be connected in series.

TESTING

DANGER: 

Hazard of Electric Shock or Burns. Avoid

contact of hot surfaces and live electrical terminals
during this adjustment.

1.

Energize the heater and check for hot spots after the heater has 
reached operating temperature. These can be identified as
bright red areas on the heating element or dark brown areas on
the clamping band. If hot spots are encountered, place a wood-
en block on the affected area and tap lightly with a hammer to
bring the heater in contact with the pipe or barrel surface.

2.

It’s good practice to check the tightness of the clamping 
band after a few hours at operation temperature. Chromalox
HTRC (Heat Trans-fer and Release Coating) is also available
for high temperature applications.

Figure 4

MAINTENANCE

WARNING: 

Hazard of Severe Shock. Disconnect all

power to heater before servicing or replacing
heaters.

1.

For longer heater life, maintain good contact between heater 
and work cylinder by periodically checking clamping band
tightness.

2.

Make certain that both terminals and band are free from con-
tact with oil, liquids or other foreign matter. Such contaminants
can cause heater failures.

3.

Check for loose terminal connections and tighten if necessary.

Summary of Contents for PM400-2

Page 1: ...Temperatures up to 800 F Model PCN Volts Watts W In2 Amperes Barrel Diameter Wt In Lbs HB 5075 273631 240 750 50 3 1 5 1 5 HB 5080 273287 240 800 48 3 3 5 1 4 1 75 HB 5460 272760 240 600 33 2 5 5 1 2 1 75 HB 5415 273463 240 1500 82 6 3 5 1 2 1 75 HB 6040 269149 240 400 20 1 7 6 2 HB 6075 268998 240 750 38 3 1 6 2 HB 6410 269464 240 1000 48 4 2 6 1 2 2 HB 7010 273623 240 1000 43 4 2 7 2 HB 7715 273...

Page 2: ...copper conduc tors only 2 Assemble terminal hardware and wiring in the order shown in Figure 5 3 Protection with proper size fuses and breakers is important to minimize hazards WARNING Do not exceed 25 inch pounds of torque when tightening the hex nuts on the heater termi nals Excessive torque will result in stripping the terminals from the refractory of the heating ele ment 4 For rated output for...

Page 3: ...11 110109 014 HB 9217 PT15X324 286 117673 017 2 011 110109 015 HB 9413 PT16X167 286 117673 018 2 011 110109 016 HB 9416 PT15X355 286 117673 019 2 011 110109 016 HB 1018 PT16X326 286 117673 020 2 011 110109 018 HB 10226 PT16X352 286 117673 021 2 011 110109 019 HB 10415 PT18X196 286 117673 022 2 011 110109 020 HB 1120 PT19X323 286 117673 023 2 011 110109 022 HB 11412 PT19X132 286 117673 024 2 011 11...

Page 4: ... BLVD OGDEN UT 84404 Phone 1 800 368 2493 www chromalox com Limited Warranty Please refer to the Chromalox limited warranty applicable to this product at http www chromalox com customer service policies termsofsale aspx ...

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