Chromalox PD438-2 Installation, Operating And Maintenance Instructions

Maintenance Instructions

Type PTHF Over-the-Side Immersion Heater
1-1/2"
5/16" x 1-1/2"
Slot For Mounting
2 Places
4-5/8"
A ±1/4"
Cold End
WARNING: 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 PTHF over-the-side immersion heaters are
especially suited for heating corrosive solutions to 212˚F.
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 corro-
sive solution, character of the materials entering 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.
WARNING: Hazard of Electrical Shock. Disconnect all
power before installing heater.
1. WARNING: Do not scrape or scratch thermal cutout capil-
lary on heating elements. Damage could result.
2. Before installing the type PTHF heater, inspect it for possible
damage which may have occurred during shipment. Also, check
to insure the line voltage is the same as that on the nameplate.
© 2010 Chromalox, Inc.
Chromalox
Installation, Operation
and
5"
4-11/16"
Cat No. Volts Watts
Phase Date Code
Part Number
6"
7/8 Dia. Hole Each Side
For 1/2 in. Conduit
C ±1/8"
1"
1-1/2"
B ±1/8"
9-1/8" ±1/4"
2-13/16"
Figure 1
®
Specifications
Model
Number
PTHF-302
PTHF-304
Integral Manual Reset
Thermal Cutout
PTHF-402
PTHF-404
PTHF-602
PTHF-604
PTHF-802
PTHF-804
PTHF-1002
PTHF-1004
B Dimension is heated section. C Dimension is cold section.
Note: "XX" after model number denotes special dimensions.
Spacer Bar
1/2"
GENERAL
1. Heater Construction Characteristics
A. High quality resistance wire held in place by compacted
magnesium oxide in stainless steel sheath.
B. Medium Watt Density.
C. Light weight and low profile.
D. Manual rest cutout to shut off heater in an overtemperature
condition is standard.
WARNING: Users should install adequate controls and safety
devices with their electric heating equipment. Where the conse-
quences 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 recommenda-
tions.
INSTALLATION
3. WARNING: Mount heater in the tank so the liquid level will
always be above the effective heated portion of the heater. If
heater is not properly submerged, it will overheat and damage
the heating elements and create a possible fire due to exces-
sive sheath temperature.
4. In an electroplating operation the heaters are not, under any
circumstance, to be placed between the electrodes and the work.
SERVICE REFERENCE
4
DIVISION
SALES
(Supersedes PD438-1)
REFERENCE
AUGUST, 1998
DATE
Dimensions (In.)
Volts Phase kW
A
240 1 or 3 3 16
480 1 or 3 3 16
240 1 or 3 4 18
480 1 or 3 4 18
240 3 6 22
480 3 6 22
240 3 8 27
480 3 8 27
240 3 10 31
480 3 10 31
PTHF
SECTION
PD438-2
161-620127-001
Approx.
B C Weight (Lbs.)
7 9 7
7 9 7
9 9 8
9 9 8
13 9 9
13 9 9
18 9 10
18 9 10
22 9 11
22 9 11