Chromalox PE414-3 specifications Pre-Operation, Maintenance

Models: PE414-3

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PRE-OPERATION

PRE-OPERATION

1.Follow the instructions for operation of your application. Ensure your procedure includes:

A.Make sure all electrical and piping connections are tight.

B.Remove all air from the heater and piping.

OPERATION

Important: NWHOSR/NWHSRG Circulation Heaters are equipped with INCOLOY® heating elements and cast iron heating chambers (galvanized for the NWHSRG). It is the responsibility of the purchaser of the heater to know the chemical composition of the corrosive solution and the character of the materi- als entering the solution as well as the corrosive effect of the solution upon the heating elements and chamber.

Sheath corrosion can result in a ground fault which depending upon the solution being heated, can cause an explosion or fire.

If the heater is not properly submerged, the heat- ing elements will overheat and could result in a fire or damaged equipment.

1.Do not heat solutions that are corrosive to the heating element sheath or the heating chamber.

2.Terminal ends of heater must be protected from drippings, con- densation, spray or direct spill-over of material. Their presence at the terminals may damage heater electrical insulation.

3.If foreign material is carried by the liquid flow, install suitable filters in the inlet pipeline to the heater. Liquid flow to the heater should be free of suspended solids.

4.Do not allow heater to operate when liquid flow is interrupted.

5.The NWHSRG/NWHOSR is designed as a flow through heater. The chamber must be full for safe operation.

MAINTENANCE

ELECTRIC SHOCK HAZARD. Disconnect all power before servicing heater. Failure to do so could result in personal injury or property damage. Heater must be serviced by a qualified person in accordance with the National Electrical Code. NFPA 70.

1.Remove heating element assembly periodically to check heater sheath for sealing, corrosion or excessive oxidation. Correct operating conditions to minimize sheath deterioration. Refer to warnings in operation section.

2.Drain heater periodically to remove sludge deposit. Deposits can act as an insulator and shorten heater life.

Note: User is responsible for maintenance schedule based on their knowledge of the heated medium and operating conditions.

3.Periodically check temperature control operation to insure accurate and safe process operation.

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

5.Correct any excessive leaking. Also refer to the last step in the installation section regarding adequate collection/drainage.

6.Reinstallation steps.

A.Reseal thread fittings with adequate seal material for the pressure/temperature rating on your heater.

B.Refer to the pre-operation section.

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Chromalox PE414-3 specifications Pre-Operation, Maintenance