Southbend STRE-3EZ - Manual (Page 24)

S ERVICE S TRATO S TEAM C OUNTERTOP S TEAMER
P AGE 24 OF 44 O WNER ’ S M ANUAL 1185184
Figure 12
Heating Cartridge Check (at Contactor)
L1
A
L2
B
L3
C
Top of
Steamer
Ohms
1. DISCONNECT POWER AT CIRCUIT BREAKER.
2. Turn Control Lever to OFF.
3. Remove right side panel of steamer.
4. DO NOT DISCONNECT HEATING-CARTRIDGE LEAD WIRES FOR THIS TEST.
5. Using a multimeter, check the resistance across contactor terminals as specified in the following table:
Serial-
Plate
Voltage
Model STRE-3EZ Model STRE-5EZ
Allowable Resistance (Ohms) Allowable Resistance (Ohms)
Three-Phase Single-Phase Three-Phase Single-Phase
A-B and B-C A-C A-C A-B and B-C A-C A-C
208 10 to 12 14 to 16 5 to 6 8 to 10 11 to 13 4 to 5
220 12 to 13 15 to 18 6 to 7 9 to 11 13 to 15 5 to 6
240 14 to 16 18 to 21 7 to 9 11 to 13 15 to 17 6 to 7
6. If the measured resistance at the contactor is not in the specified range, disconnect all the heating cartridges
from the contactor. Measure the resistance across the leads each cartridge. Replace any cartridge that
shows either an open or short circuit.