Operating instructions

Wiring Diagram tor STM-E a STME-EL Sterilizer
20ev- 240V /120V - 3(/>- 4 WIRE
CON i AC TOP"1
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LEFT HAND HEATER
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MIDDLE HEATER
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JUNCTION
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RIGHT HAND HEATEP
BOX
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C<:»ITRACTOR'2
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TO UPPER
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LOW WATER
CUT'OFf
lEVEL
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RELAY
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8AR~SOALE PRESSURE
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SWITCH OPOT
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EXHAUS T SOLENOtQ. \lAL\lE
EXHAUST SELECTOR
MANUAL
SWI reH
POWER REQUIREMEttTS
NOMINAL
AMPS PEA WIPE
3'PHASE
I-PHASE
208\1 1240 V 208\1 ;240\1
32 I
37
47
Is.
NOTE I THIS UNIT MUS T I:IE GROUNDED
WITH HOT LESS THAN A "16 AWG
COPPER CONHOUCTOR
The Electrical Supply Connections
Connect to proper electrical supply as indicated on
nameplate
on top of unit. Connection is located behind
the terminal box cover at the lower left side of unit.
Whether
the supply current is 208 or 240 volt, single
phase or three phase, all control circuits are 120 volts.
In order to accomplish this, a current-carrying
grounded neutral must be provided.
17.oD11N
MARKET FORGE ~8
5
MARKET FORGE CO.
E\lERETT, MASS.
11-0233
Thus, a three phase system must be 4-wires and a
single phase system must be 3-wires.
If a current-
carrying ground neutral
is not avail." from the
power source, a sePirate 120 volt circuit must be run.
Most electrical codes require, and we recommtnd,
that a separate disconnect switch be located within
sifltt
of the sterilizer. When a separate 120 volt con-
circuit must
be run, this must allO be Plrt of the dis·
. connect box assembly.