I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg
.
22
COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106
Tel: 817-624-0820
37
111.4
63
178.4
89
269.4
115
389.9
141
547.0
38
113.6
64
181.5
90
273.5
116
395.2
142
553.9
39
115.8
65
184.5
91
277.6
117
400.5
143
560.9
40
118.1
66
187.6
92
281.7
118
405.9
144
567.9
41
120.3
67
190.7
93
285.9
119
411.4
145
575.1
42
122.7
68
193.9
94
290.1
120
416.9
146
582.3
43
125.0
69
197.1
95
294.4
121
422.5
147
589.6
44
127.4
70
200.4
96
298.7
122
428.2
148
596.9
45
129.8
71
203.6
97
303.0
123
433.9
149
604.4
PRIOR TO START-UP
Insure all shipping bolts, screws, and brackets are removed. Inspect all mounting bolts/screws on
blowers, motor, coils and mounting brackets.
Check sheave and pulley to ensure alignment, check belt tension, and tighten all set screws.
Check for proper rotation of the blower pulley.
Exchanging two of the three leads at the motor can reverse three phase motor rotation. Note that not
all installations will use starters.
Exchanging leads inside the motor junction box can reverse single phase motor rotation.(refer to motor
data plate).
Ensure all filters are properly installed and free from construction debris.
Replace all doors, panels etc and check amperage draw of the motor. The amperage draw should not
exceed the nameplate amps shown on the motor data plate.
OPERATION AND MAINTENANCE
WARNING
Disconnect electrical power to all circuits before servicing unit. Failure to do so may result in personal
injury or death from electrical shock or moving parts.
RETURN AIR FILTERS
–
Filter access is from either side of unit. Inspect on a regular basis (at least
monthly) and clean or replace.
CAUTION
Never operate unit without a filter or with filter access door removed. Damage to blower motor may
result.
WATER PIPING
To check or clean, remove unit access panel, filter access door and filters. Use accepted industry
methods for cleaning.
Remove all foreign matter from pan and condensate drain line. Check for rust or holes and repair as
needed.
BELT AND PULLEY
–
Proper pulley alignment and belt tension must be maintained at all times. Speed is reduced by adjusting
pulley faces so they are farther apart; speed is increased with faces closer together. Check pulley
setscrews and bolts.
