Probe Resistance Chart - Frymaster H50 Series Service And Parts Manual

PROBLEM
Gas supply or gas valve
is suspect.
Temperature probe is
suspect.
For use with H50 Series fryers manufactured with Minco Thermistor probes only.
F OHMS C F
60 1059 16 130
65 1070 18 135
70 1080 21 140
75 1091 24 145
80 1101 27 150
85 1112 29 155
90 1122 32 160
95 1133 35 165
100 1143 38 170
105 1154 41 175
110 1164 43 180
115 1174 46 185
120 1185 49 190
125 1195 52 195
PROBABLE CAUSES
A.
Gas valve in non-CE is in OFF position.
B.
Gas valve in non-CE is in OFF position.
C.
Improper incoming gas pressure.
Check: Incoming gas pressure is in
accordance with the appropriate table on
Page 1-23 of this manual.
D.
Improper burner manifold gas pressure.
Check: Burner manifold pressure is in
accordance with the appropriate table on
Page 1-7 of this manual.
A. Damaged probe.
Check: While it is still in the frypot,
inspect the probe for damage.
B. Failed probe.
Check 1: Determine the temperature of
the oil in the frypot using a thermometer
or pyrometer placed at the tip of the
probe, then check the for a resistance
through J3 pins 2 and 6 (J1 pins 2 and 6
for the left side of a dual vat) approxi-
mately equal to that given in the Probe
Resistance Chart for the corresponding
temperature.
Check 2: Check for
megaohms of resistance through each of
the previously tested pins to ground.

Probe Resistance Chart

OHMS C F
1204 54 200
1216 57 205
1226 60 210
1237 63 215
1247 66 220
1258 68 225
1268 71 230
1278 74 235
1289 77 240
1299 79 245
1309 82 250
1320 85 255
1330 88 260
1340 91 265
CORRECTIVE ACTION
A.
Place gas valve in ON position.
B.
Place gas valve in ON position.
C.
Bring incoming gas pressure into accor-
dance with the appropriate table on Page
1-23 of this manual.
D.
Adjust the gas valve (see procedure 1.4
of this manual) to bring the burner mani-
fold pressure into accordance with the
appropriate table on Page 1-7 of this
manual. If the manifold pressure cannot
be properly adjusted, replace the gas
valve.
A. Replace the probe if the body is bent,
dented, or cracked, or if its wiring is
burned, broken, frayed, or kinked.
B. If probe does not test OK for both
checks, replace the probe.
at least 5
OHMS C F OHMS
1350 93 270 1493
1361 96 275 1503
1371 99 280 1514
1381 102 285 1524
1391 104 290 1534
1402 107 295 1544
1412 110 300 1554
1422 113 305 1564
1432 116 310 1574
1442 118 315 1584
1453 121 320 1594
1463 124 325 1604
1473 127 330 1614
1483 129 335 1624
1-35
C F OHMS C
132 340 1634 171
135 345 1644 174
138 350 1654 177
141 355 1664 179
143 360 1674 182
146 365 1684 185
149 370 1694 188
152 375 1704 191
154 380 1714 193
157 385 1724 196
160 390 1734 199
163 395 1744 202
166 400 1754 204
168 405 1764 207