Southbend StratoSteam STRE-5D - Manual (Page 25)

S TRATO S TEAM E LECTRIC C OUNTERTOP S TEAMER S ERVICE
O WNER ’ S M ANUAL 1189951 (10/08) P AGE 25 OF 56
Figure 14
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:
Model STRE-3D Model STRE-5D
Allowable Resistance (Ohms) Allowable Resistance (Ohms)
Three-Phase Single-Phase Three-Phase Single-Phase
Serial-
Plate
Voltage
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
480 55 to 64 73 to 85 29 to 34 45 to 52 60 to 70 24 to 28
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.