WIRING
CAUTION: Hazard of Electric Shock. Any installation involving electric heaters must be effectively ground- ed in accordance with National Electrical Codes to eliminate shock hazard.
1.Electrical wiring to heater must be installed in accordance with the National Electrical Code and local electric codes.
2.When element wattages are not equal, heaters must not be con- nected in series.
3.Electrical wiring to heater should be contained in Rigid Conduit or in sealed Flexible Metal hose to keep corrosive vapors and liquid out of the terminal housing. Conduit should terminate at some remote area free of corrosive vapors. If high humidity is encoun- tered, the conduit should slope away from the heater terminals to keep condensate away from the heater.
4.If flexible cord is employed with the heater, a watertight connector should be used for entry of the cord into the terminal box.
L1
L2
Typical Wiring Diagram
240 - 480V, 1Ø
5.Make sure heater is grounded by attaching ground conductor, traceable back to service entrance, to the ground terminal located inside the terminal box. If heater is used in an electroplating tank, the heater should be grounded externally to the tank wall to mini- mize stray plating currents in heater sheath that may cause sheath corrosion.
OPERATION
1.Do not operate heater at voltages in excess of that stamped on the heater since excess voltage will shorten heater life.
2.Always maintain a minimum of 2” of solution above the heated portion of the element to prevent exposure of the effective heated length. If the heater is not properly submerged, it may overheat and shorten heater life. Do not operate heater if dry.
3.Sludge should not be allowed to
4.If heater is inactive for a prolonged period or subjected to exces- sive moisture during shipments, energize at half voltage for a peri- od of time (generally overnight) before operating at rated voltage.
MAINTENANCE
CAUTION: Hazard of Severe Shock. Disconnect all power to heater before servicing or replacing heaters.
1.Heaters should be checked periodically for coating and corrosion buildup and cleaned if necessary.
2.Tank should be checked regularly for sediment around the ele- ments as sediment can act as an insulator and shorten heater life.
3.Check for loose terminal connections.
4.If corrosion is indicated in the terminal housing, check termi- nal box gasket and replace if necessary as well as checking the conduit layout to correct the conditions that allow corrosion to enter the terminal housing.
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
2150 N. RULON WHITE BLVD., OGDEN, UT 84404 | TA - Q0 - EF | |
Phone: | www.chromalox.com | Litho in U.S.A. |
