Chromalox PE433-3 Wiring, Operation, Maintenance, Renewal Parts Identification

INSTALLATION

10. DANGER: Possible Explosion. A pressure relief valve	11. In a forced circulation system, use pump on the inlet side.
should be provided by customer at outlet of vessel. There should
be no other valving between vessel and relief valve.

WIRING

WARNING: Hazard of Electrical Shock. Any installa- tion involving electric heaters must be effectively grounded in accordance with the National Electrical Code to eliminate shock hazard.

1.All wiring should be done in accordance with local codes and the National Electrical Code by a qualified person.

2.Because of the high operating temperature expected, aluminum wiring should not be used.

3.When heater element wattages are not equal, heaters must not be connected electrically in series.

4.Electrical wiring to heater should be contained in rigid conduit or in sealed flexible hose when corrosive vapors or liquids are pre- sent. If high humidity is encountered, the conduit should slope down and away from the heater.

5.If flexible cord is employed, a watertight connector should be used for entry of the cord into the terminal box. Outdoor applica- tions require liquid-tight conduit and connectors.

6.Wire separately ordered Hi-Limit and Process Controllers to thermocouples on heaters.

OPERATION

WARNING: Do not heat materials that are corrosive to the heating element sheath or chamber.

It is the responsibility of the user to know the chemical composi- tion of the corrosive solution and the characteristics of the materials entering the solution as well as the corrosive effect of the solution upon the heating elements and chamber. Chromalox cannot warrant any electric circulation heater against failure by sheath corrosion.

1.Do not allow heater to operate when steam, air or gas flow is interrupted, as dry operation of the heater can cause failure. An air flow switch should be provided by customer and placed upstream of the heater inlet.

2.Terminal ends of heater must be protected from drippings, condensation, spray or direct spill-over of material whose pres- ence at the terminals may damage heater electrical insulation. Liquid-resistant terminal enclosures are available to protect heater. Consult your Local Chromalox Sales office.

3.If foreign material is carried by the gaseous flow, install suitable filters in the inlet pipe line to the heater.

4.Low Megohm Condition — The refractory material used in elec- tric heaters may absorb moisture during transit or when subject to a humid environment. This moisture absorption may result in a cold insulation resistance of less than twenty megohms. Normally, this megohm value increases after heatup and does not affect heater efficiency or life.

A low megohm condition can easily be corrected by removing the immersion heater from the pipe body, removing the terminal hard- ware and terminal enclosure and baking the heater in an oven at 350˚-700˚F for several hours, preferably overnight.

Note: The lid from an E2 enclosure may also need removed.

An alternate procedure is to energize the heaters at low voltage until the megohm reading returns to normal. When energizing heater without flow, the sheath temperatures should not be allowed to exceed 750˚F for INCOLOY® elements.

MAINTENANCE

1.WARNING: Hazard of Electric Shock. Disconnect all power before servicing heater.

2.Remove heating element assembly periodically to check heater sheath for corrosion or excessive oxidation. Correct operating conditions to minimize sheath deterioration.

3.Periodically check temperature control and pressure-temperature safety limit control operation to insure accurate and safe process operation.

4.Check all electrical connections periodically and retighten connec- tions which may have loosened in service. Replace wire and wire terminals that show signs of oxidation which would interfere with establishment of reliable electrical connections.

5.Clean any filters in the inlet pipeline to avoid reduced flow, which can cause element overheating and premature failure.

RENEWAL PARTS IDENTIFICATION

Model	Volts	kW	Heater Assembly
			for E1 Model
GCHIS-C05	120	0.5	042-073644-012
GCHIS-C05	240	0.5	042-073644-040
GCHIS-C10	120	1.0	042-073644-017
GCHIS-C10	240	1.0	042-073644-021
GCHIS-C20	120	2.0	042-073644-028
GCHIS-C20	240	2.0	042-073644-020
GCHIS-C30	240	3.0	042-073644-016

Model	Volts	kW	Heater Assembly
			for E2 Model
GCHIS-C05E2	120	0.5	042-073644-025
GCHIS-C05E2	240	0.5	042-073644-041
GCHIS-C10E2	120	1.0	042-073644-026
GCHIS-C10E2	240	1.0	042-073644-013
GCHIS-C20E2	120	2.0	042-073644-034
GCHIS-C20E2	240	2.0	042-073644-030
GCHIS-C30E2	240	3.0	042-073644-018

Note: When ordering parts for Model Numbers suffixed “XX” or any other letter or letters not specifically identified on this instruction sheet, order Renewal Parts on special order basis, giving name of part, part number, model number and description.

Limited Warranty:

Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx.

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

Phone: 1-800-368-2493 www.chromalox.com

TA - U0 - EF Litho in U.S.A.