Chromalox PTHT-101 User Manual

Chromalox

®

DIVISION 4 SECTION

PTHT

SALES

REFERENCE

DATE

SERVICE REFERENCE

Installation, Operation

and

Maintenance Instructions

PD439-2

161-562284-001

JULY, 1998

(Supersedes PD439-1)

GENERAL

© 2010 Chromalox, Inc.

Titanium Over-the-Side Immersion Heater

Type PTHT

DANGER: This heater is not intended for use in haz-

ardous atmospheres where flammable vapors,
gases, liquids or other combustible atmospheres are
present as defined in the National Electrical Code.
Failure to comply can result in explosion or fire.

Chromalox type PTHT over-the-side immersion heaters are
especially suited for use in plating tanks, rinse tanks and other
aqueous solutions.

WARNING: It is the responsibility of the purchaser
of the heater to make the ultimate choice of
sheath material based upon his knowledge of the
chemical composition of the solution, and controls
which he maintains on the process. Chromalox
cannot warrant any electric immersion heater

against failure by sheath corrosion if such failure
is the result of operating beyond our control.

1. Heater construction characteristics.
A. High quality resistance wire held in place by compacted

magnesium oxide in titanium sheath.

B. Medium watt densities.
C. Vapor tight junction box with 3’ PVC flexible conduit with

ground wire.

D. Spacer bar prevents elements from touching tank wall.
E. Flat profile consumes little tank work area.

WARNING: Users should install adequate controls and safe-

ty devices with their electric heating equipment. Where the
consequences of failure may be severe, back-up controls are
essential. Although the safety of the installation is the
responsibility of the user, Chromalox will be glad to make
equipment recommendations.

Model

Volts

Dimensions (In.)

Approx.

Number

(Single

kW W/In

2

Wt.

Phase)

AB

(Lbs.)

PTHT-101 120

11913 6 6

PTHT-102 240

PTHT-202 240

2192112 7

PTHT-204 480

PTHT-302 240

3212617 8

PTHT-304 480

PTHT-402 240

4213122 9

PTHT-404 480

PTHT-602 240

6224233 12

PTHT-604 480

PTHT-802 240

8225344 14

PTHT-804 480

Specifications

INSTALLATION

WARNING:

Hazard of Electrical Shock. Disconnect all

power before installing heater.

1. Before installing the type PTHT heater, inspect it thoroughly for

possible damage which may have occured during shipment. Also
check to insure that the line voltage is the same as that stamped
on the heater nameplate.

2. Where work will pass over or near equipment, additional pro-

tection such as a metal guard may be needed.

3. To resist buoyancy and to keep the heater in close profile with

tank wall, a metal bracket with two mounting holes has been
provided.

4. WARNING: Heated section (See Figure 1, “B” Dimension)
must be totally immersed at all times. If the heater is not properly
submerged, it will overheat and damage the heating element and
create a possible fire hazard due to excessive sheath temperatures.

5. Heater must not be operated in sludge.

6. DANGER: Hazard of Fire. Since these heaters are capable

of developing high temperatures, extreme care should be taken to:
A. Avoid installing heaters in an atmosphere containing com-

bustible gases and vapors.

B. Avoid contact between heater and combustible materials.
C. Keep combustible materials for enough away to be free of

the effects of high temperatures.

Leadwires
w/ Ground

Flexible PVC

Conduit

90˚ Bend

Mtg. Bracket

Terminal

Box

B

A

9-3/16”

4-3/4”

WIRING

WARNING: Hazard of Electric Shock. Any installa-

tion involving electric heaters must be effectively
grounded in accordance with the National
Electrical Code to eliminate shock hazard.

1. Electrical wiring to heater must be installed in accordance

with the National Electrical Code or local electrical codes by a
qualified person.

2. When element wattages are not equal, heaters must not be

connected in series.

3. For single phase, apply power across two (2) black leads.

Green wire (ground) must be properly grounded.

4. For balanced 3 phase loads, three (3) heaters of the same volt-

age and wattage ratings are required. A six-step guide to
wiring connections for 3 phase delta:

OPERATION

1. Do not operate heater at voltages in excess of that stamped on

the heater since excess voltage will shorten heater life.

2. WARNING: Always maintain a minimum of 2” of solution

above the heated portion of the element (See Figure 1, “B”
Dimension) to prevent exposure of the effective heated length.

If the heater is not properly submerged, it may overheat and
shorten heater life and create a fire hazard.

3. In an electroplating operation the heaters are not under any

circumstances to be placed between the electrodes and the
work.

MAINTENANCE

WARNING: Hazard of Severe Shock. Disconnect all

power to heater before servicing or replacing
heaters.

1. Heaters should be checked periodically for coatings and corro-

sion, and cleaned if necessary.

2. Tank should be checked regularly for sediment around the end

of heater as this sediment can act as an insulation and shorten
heater life.

2150 N. RULON WHITE BLVD., OGDEN, UT 84404

Phone: [phone] www.chromalox.com

TA - Q0 - EF
Litho in U.S.A.

A

A

A

A

#1#1

B

B

B

B

BBA A

#2

#2

#3

#3

A

A

A

A

#1

#1

#1

B

B

#2

#2

#2

#3

#3

#3

Step 1: Designate one
black leadwire as “A” and
one black leadwire as “B”.

Step 2: Assign designa­tions 1, 2, 3 to heaters.

Step 3: Connect leadwire
“A” of Heater #1 to lead­wire “A” of Heater #2.

Step 4: Connect leadwire
“B” of Heater #1 to lead­wire “B” of Heater #3.

Step 5: Connect leadwire
“B” of Heater #2 to lead­wire “A” of Heater #3.

Step 6: Designate one 3
phase power line to each of
the three connections.

Three Phase

Power

Note: Green wire (ground) of each heater must be properly grounded.

Limited Warranty:

Please refer to the Chromalox limited warranty applicable to this product at

http://www.chromalox.com/customer-service/policies/termsofsale.aspx.