Chromalox
®
DIVISION
4
SECTION
CIT
SALES
REFERENCE
DATE
SERVICE REFERENCE
Installation
and
OPERATING INSTRUCTIONS
PD412-5
161-049179-001
MAY, 1999
(Supersedes PD412-4)
© 2010 Chromalox, Inc.
Type CIT
Cast Iron, Metal Melting, Immersion Heaters
Maximum Melt Temperature — 950˚F
GENERAL
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.
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.
D.
A rugged, cast iron terminal box protects the terminals against
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-
t i a l , i n c l u d i n g G F C I ( G r o u n d F a u l t C i r c u i t
Interrupters). Although the safety of the installa-
tion is the responsibility of the user, Chromalox
will assist in identifying equipment options.
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.
WARNING:
When melting solids by direct immersion, a
surface vent should be provided to allow gases to
escape.
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.
Displacement
Dimensions (In.)
Volume
Model
Volts
kW
(In
3
)
A
B
C
D
E
F
CIT-218
240
3
57
—
18
4-5/8
2
17-3/8
2
CIT-1612
240
5
135
12-1/4
16
2
9
10
3
CIT-1619
240
5
180
19-1/4
16
2
6
17
3
CIT-2219
240
5
145
18-1/2 12-1/2
—
6-1/2 14-1/2
—
CIT-2319
240
10
180
19
15-1/4
—
9
15
—
Specifications
Type CIT-1612 and CIT-1619
(Figure 1)
C
D
B
E
A
F
Effective Heated Length
1” Conduit
Opening
1” Conduit
Opening
Heated
Length
E
A
B
D
E
B
F
C
D
1” Conduit
Opening
Type CIT-2219 and CIT-2319
(Figure 2)
Tpye CIT-218
(Figure 3)
2 Holes
9/16” Dia.
3-1/8”
4-5/8”
3-1/4”
2-1/4”
Dia.
1-1/2”
5/8”
Gasket - For use with CIT-218
(Figure 4)
Heated
Length
