Chromalox PD438-2 specifications General, Chromalox, Installation, Operation, Date August

Chromalox®

Installation, Operation

and

Maintenance Instructions

SERVICE REFERENCE

DIVISION 4		SECTION PTHF
SALES	(Supersedes PD438-1)		PD438-2
REFERENCE

161-620127-001

DATE AUGUST, 1998

Type PTHF Over-the-Side Immersion Heater

	5"
	Part Number	4-11/16"
	Cat No. Volts Watts
	Phase Date Code
1-1/2"
5/16" x 1-1/2"
Slot For Mounting	6"
2 Places
4-5/8"

7/8 Dia. Hole Each Side For 1/2 in. Conduit

Integral Manual Reset Thermal Cutout

Specifications

Model	Volts	Phase	kW	Dimensions (In.)			Approx.
Number				A	B	C	Weight (Lbs.)
PTHF-302	240	1 or 3	3	16	7	9	7
PTHF-304	480	1 or 3	3	16	7	9	7
PTHF-402	240	1 or 3	4	18	9	9	8

A ±1/4"	C ±1/8"
	1"
Cold End	1-1/2"
	B ±1/8"

		Spacer Bar
9-1/8" ±1/4"	2-13/16"
		1/2"

Figure 1

PTHF-404	480	1 or 3	4	18	9	9	8
PTHF-602	240	3	6	22	13	9	9
PTHF-604	480	3	6	22	13	9	9
PTHF-802	240	3	8	27	18	9	10
PTHF-804	480	3	8	27	18	9	10
PTHF-1002	240	3	10	31	22	9	11
PTHF-1004	480	3	10	31	22	9	11

B Dimension is heated section. C Dimension is cold section.

Note: “XX” after model number denotes special dimensions.

GENERAL

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.

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

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.

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.

© 2010 Chromalox, Inc.