Chromalox Electric Heater PD412 5 User Manual

®
Chromalox  
SERVICE REFERENCE  
Installation  
DIVISION  
SALES  
4
SECTION CIT  
(Supersedes PD412-4)  
and  
REFERENCE  
PD412-5  
OPERATING INSTRUCTIONS  
161-049179-001  
DATE  
MAY, 1999  
Type CIT  
Cast Iron, Metal Melting, Immersion Heaters  
Maximum Melt Temperature — 950˚F  
Specifications  
Displacement  
Volume  
Dimensions (In.)  
D
Type CIT-1612 and CIT-1619  
(Figure 1)  
Model  
Volts  
kW  
(In3)  
A
B
C
D
E
F
C
CIT-218  
240  
240  
240  
240  
240  
3
5
5
5
10  
57  
18  
4-5/8  
2
2
2
9
6
17-3/8  
10  
2
3
1” Conduit  
Opening  
A
E
CIT-1612  
CIT-1619  
CIT-2219  
CIT-2319  
135  
180  
145  
180  
12-1/4 16  
19-1/4 16  
18-1/2 12-1/2  
19 15-1/4  
17  
3
F
6-1/2 14-1/2  
15  
B
9
Effective Heated Length  
D
2 Holes  
9/16” Dia.  
Heated  
Length  
1-1/2”  
D
E
3-1/8”  
1” Conduit  
Opening  
A
F
E
Heated  
Length  
C
B
5/8”  
1” Conduit  
Opening  
3-1/4”  
4-5/8”  
Tpye CIT-218  
(Figure 3)  
B
Type CIT-2219 and CIT-2319  
(Figure 2)  
Gasket - For use with CIT-218  
(Figure 4)  
GENERAL  
D. A rugged, cast iron terminal box protects the terminals against  
WARNING: Hazard of Shock. Disconnect all power  
before installing, servicing or replacing heaters.  
Chromalox Cast-Iron Immersion Heaters are generally used  
for metal-melting applications such as solder, lead, tin, stereotype  
metal, babbitt (with 4% or less copper) and other soft metals  
where maximum working temperature is 950 ˚F.  
spillage and abuse.  
WARNING: Users should install adequate back-up  
controls and safety devices with their electric  
heating equipment. Where the consequences of  
failure may be severe, back-up controls are essen-  
tial, including GFCI (Ground Fault Circuit  
Interrupters). Although the safety of the installa-  
tion is the responsibility of the user, Chromalox  
will assist in identifying equipment options.  
Note: Not suitable for immersion in zinc or aluminum.  
1. Heater Construction Characteristics —  
A. High quality resistance wire held in place by compacted mag-  
nesium oxide in heavy wall steel sheath cast in iron.  
B. Large heat output at relatively low watt densities.  
C. Excellent heat transfer.  
INSTALLATION  
1. Before installing the type CIT heater, inspect it for possible dam-  
age which may have occurred during shipment. Also, check to  
insure that the line voltage is the same as that stamped on the  
nameplate.  
2. CAUTION: Mount heater in the tank so that the liquid level will  
always be above the effective heated portion of the heater. If the  
heater is not properly submerged, it will overheat and damage the  
heating elements and create a possible fire hazard due to exces-  
sive sheath temperatures.  
A. Over-the-Side  
Models CIT-1612 and CIT-1619 (see Figure 1 - for use in flat  
bottomed and straight-sided vessels); CIT-2219 and CIT-23 19  
(See Figure 2 - for use in sloping vessels) are designed for over-  
the-side installation.  
1. To resist buoyancy of heater in heavy metals, securely mount  
heater to metal crucible by clamping.  
CAUTION: Do not support or suspend heater by the  
tubular section adjacent to the terminal box as the  
tubular section will be damaged by bending.  
WARNING: When melting solids by direct immersion, a  
surface vent should be provided to allow gases to  
escape.  
© 2010 Chromalox, Inc.  
 

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