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59
181
83
570
183
84
552
185
85
535
187
86
518
189
87
502
190
88
487
192
89
472
194
90
458
196
91
444
198
92
431
199
93
418
201
94
405
203
95
393
205
96
382
207
97
370
208
98
360
210
99
349
212
100
339
214
101
329
216
102
320
217
103
311
219
104
302
221
105
293
223
106
285
225
107
277
226
108
269
228
109
262
230
110
255
232
111
248
234
112
241
235
113
234
237
114
228
239
115
222
241
116
216
Table 18 —
5K Thermistor Temperature vs.
Resistance (cont)
°
F
°
C
RESISTANCE, OHMS
243
117
210
244
118
205
246
119
199
248
120
194
250
121
189
252
122
184
253
123
179
255
124
175
257
125
170
259
126
166
261
127
162
262
128
157
264
129
154
266
130
150
268
131
146
270
132
142
271
133
139
273
134
135
275
135
132
277
136
129
279
137
126
280
138
123
282
139
120
284
140
117
286
141
114
288
142
111
289
143
109
291
144
106
293
145
104
295
146
101
297
147
99
298
148
97
300
149
94
302
150
92
Table 18 —
5K Thermistor Temperature vs.
Resistance (cont)
°
F
°
C
RESISTANCE, OHMS
If a more accurate check is required, unit must be shut down and
thermistor removed and checked at a known temperature (freezing
point or boiling point of water) using either voltage drop measured
across thermistor at the J3 terminal, by determining the resistance
with unit shut down and thermistor disconnected from J3. Com
-
pare the values determined with the value read by the control in
the Temperatures mode using the controller display.
Fan Blade and Fan Motor Service
A formed metal mount bolted to the coil caps supports each fan
and motor assembly. A shroud and a wire grille provide protection
from the rotating fan. See Figure 46. To remove the fan a special
puller (RCD part no. 30RB680082) can be used. The fan utilizes a
set screw and does not require the use of retaining compound in
the keyway. The fan can be removed without the puller, but its use
eases disassembly. The exposed end of the fan motor shaft is pro
-
tected from weather by grease. If fan motor must be removed for
service or replacement, re-grease the fan shaft. The fan needs to be
positioned fully down against the step on the motor shaft. Apply
blue thread locker (Loctite 243) to the threads of both the axial bolt
and the set screw. Install the thick washer and M8 axial bolt; do
not fully tighten. Install set screw and tighten to 16 ± 2 ft-lbs (21.7
± 2.7 Nm). Torque the axial bolt to 24 ± 2 ft-lbs (32.5 ± 2.7 Nm).
Reinstall shroud and wire grille.
Содержание 09FC020
Страница 8: ...8 Fig 5 09FC 020 Unit Dimensions...
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