®
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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