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Operation
1. Do not heat materials that are corrosive to the heat-
ing element sheath or chamber.
Type NWHO Circulation Heaters are equipped
with steel heating elements and galvanized-
steel heating chambers. It is the responsibility
of the user to know the chemical composition
of the corrosive solution and the character 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 if such fail-
Maintenance
HAZARD OF ELECTRIC SHOCK. Disconnect all
power before servicing heater.
1. Remove heating element assembly periodically
to check heater sheath for corrosion or excessive
oxidation. Correct operating conditions to minimize
sheath deterioration.
Renewal Parts Identification
Order Renewal Parts on a Special Order Basis. Give
the name of the part, part number, voltage, wattage
and any special features to your local Chromalox Rep-
resentative or the factory.
© 2018 Chromalox, Inc. All rights reserved.
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.
103 Gamma Drive
Pittsburgh, PA 15238
(412) 967-3800
www.chromalox.com
ure is the result of operating conditions beyond
our control.
2. Terminal ends of heater must be protected from
drippings, condensation, spray or direct spill-over
of material whose presence at the terminals may
damage heater electrical insulation. Liquid-tight
terminal enclosures are available to protect heater.
Check Factory.
3. If foreign material is carried by the fluid flow, install
suitable filters in the inlet pipe line to the heater.
4. Do not allow heater to operate when oil flow is inter-
rupted.
2. Periodically check temperature control and pres-
sure-temperature safety limit control operation to
insure accurate and safe process operation.
3. Check all electrical connections periodically and
retighten connections 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.
Chromalox
4
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