Greenheck BCF (453284) - Manual (Page 4)

BCF
Size
*Unit
Filter Box Mixing Box
Slide-Out Sloped Without Damper With Damper
106
80
(36)
9
(229)
24
(610)
14
(356)
29
(737)
107
100
(45) 10
(254)
26
(660)
17
(432)
36
(914)
108
120
(54) 12
(305)
39
(991)
23
(584)
45
(1143)
110
265
(120)
20
(508)
64
(1626)
40
(1016)
69
(1753)
112
340
(157)
28
(711)
86
(2184)
64
(1626)
100
(2540)
206
145
(66) 12
(305)
35
(889)
19
(483)
42
(1067)
207
207
(84) 14
(356)
36
(914)
23
(584)
52
(1321)
208
220
(100)
17
(432)
50
(1270)
31
(787)
67
(1702)
210
345
(156)
26
(660)
79
(2007)
51
(1295)
93
(2362)
212
515
(234)
38
(965)
119
(3023)
86
(2184)
142
(3607)
All weights are in lb. (kg)
*Unit weight is cataloged with the largest Open Proof Motor available.
1 in.
(25 mm)
G
I
H
E
F
L
Fan
Optional Side Acess Door
3 5 /
8
in. (92 mm)
Fan
Filter Box
Mixing Box
H
L
L
J
E
F
I
K
Fig. 2 - BCF Unit Dimensions Fig. 3 - BCF with Filter and Mixing Box Unit Dimensions
Dimensional Data
Weight Information
BCF
Size
E F G H I
J Filter Size
K L
Slide-Out Sloped Slide-Out Qty. Sloped Qty.
106
231/4
(591)
20
(508)
-
12
(305)
6
(152)
6
(152)
22
(559)
191/2 x 101/4
(495 x 260)
1
16 x 20
(406 x 508)
1
21/2
(64)
11
(279)
107
29
(737)
23
(584)
5/8
(16)
15
(381)
8
(203)
6
(152)
23
(584)
22 7 /
8
x 121/4
(581 x 311)
1
16 x 20
(406 x 508)
1
21/2
(64)
13
(330)
108
32
(813)
26
(660)
5/8
(16)
18
(457)
10
(254)
6
(152)
24
(610)
25 7 /
8
x 151/2
(657 x 394)
1
16 x 20
(406 x 508)
2
3
(76)
16
(406)
110
36
(914)
32
(813)
5/8
(16)
24
(610)
12
(305)
7
(178)
25
(635)
31 7 /
8
x 181/2
(810 x 470)
1
20 x 20
(508 x 508)
2
31/2
(89)
19
(483)
112
42
(1067)
36
(914)
5/8
(16)
28
(711)
14
(356)
7
(178)
27
(686)
35 7
/
8
x 22 3
/
8
(911 x 568)
1
16 x 20
(406 x 508)
4
41/2
(114)
23
(584)
206
231/4
(591)
34
(864)
5/8
(16)
26
(660)
6
(152)
6
(152)
22
(559)
33 7
/
8
x 101/4
(860 x 260)
1
20 x 20
(508 x 508)
1
21/2
(64)
11
(279)
207
29
(737)
38
(965)
5/8
(16)
30
(762)
8
(203)
6
(152)
23
(584)
37 7
/
8
x 121/4
(962 x 311)
1
16 x 20
(406 x 508)
2
21/2
(64)
13
(330)
208
32
(813)
44
(1118)
5/8
(16)
36
(914)
10
(254)
6
(152)
24
(610)
43 7
/
8
x 151/2
(1114 x 394)
1
16 x 20
(406 x 508)
4
3
(76)
16
(406)
210
36
(914)
48
(1219)
5/8
(16)
40
(1016)
12
(305)
7
(178)
25
(635)
47 7 /
8
x 181/2
(1216 x 470)
1
20 x 20
(508 x 508)
4
31/2
(89)
19
(483)
212
42
(1067)
58
(1473)
5/8
(16)
50
(1270)
14
(356)
7
(178)
27
(686)
57 7 /
8
x 221/2
(1470 x 572)
1
20 x 25
(508 x 635)
4
41/2
(114)
23
(584)
All dimensions are in inches (mm).
2
®
Pre-Starting Checks
WARNING: Disconnect and secure
to the “OFF” position all electrical
power to the fan prior to inspection or
servicing. Failure to comply with this
safety precaution could result in serious
injury or death.
Check all fasteners for tightness. The
blower wheel should rotate freely and
not rub on the fan panel venturi. Turn
the fan on momentarily to check for
unusual vibration or noise. Do not
run the fan more than a few seconds
without being connected to the system
for which it was designed. Motor
overloading and burnout may result
from lack of system static pressure.
Direction of wheel rotation is critical.
Reversed rotation will result in poor air
performance, motor overloading and
possible burnout. Check wheel rotation
by momentarily energizing the unit.
Rotation is always in the same direction
as airflow at the outlet. See Fig. 4.
Belt tension should be checked after
the first 24 hours of operation, after
100 hours of operation and periodically
thereafter. Premature belt failures are
frequently caused by improper belt
tension (either too tight or loose) or
misaligned pulleys. The proper tension
for operating a V-belt is the lowest
tension at which the belts will not slip.
Belt tension can be adjusted by
loosening the four fasteners on the
drive frame (pointed out in Fig. 5) and
sliding the motor base away from the
blower housing.
Belt tension should be adjusted to allow
1/64 inch (0.4 mm) of belt deflection
per inch of belt span. For example, a
16 inch (406 mm) belt span should have
16/64 inch (6.4 mm) or 1/4 inch (6.4 mm)
of deflection using moderate thumb
pressure at mid-point between pulleys,
see Fig. 6. Overtightening will cause
excessive bearing wear and noise.
Too little tension will cause slippage at
startup and uneven wear.
It is very important that the pulleys
remain in proper alignment after
adjustments are made. Misalignment
of pulleys will result in premature belt
wear, noise, vibration and power loss.
See Fig. 7.
Rotation
Airflow
Fig. 4 - Wheel Rotation
Fig. 7 - Pulley Alignment
Fig. 6 - Belt Tension
Fasteners (2)
Fasteners (2)
Fig. 5 - Drive Frame Fasteners
Maintenance
WARNING: Before servicing or cleaning
the unit, switch power off at service
panel and lock service disconnecting
means to prevent power from being
switched on accidentally. When the
service disconnecting means cannot
be locked, securely fasten a prominent
warning device, such as a tag, to the
service panel.
Once the fan has been put into
operation, a periodic maintenance
program should be set up to preserve
the reliability and performance of
the fan. Items to be included in this
program are:
BELTS, BEARINGS, MOTOR,
FASTENERS, and WHEEL(S).
To access the fan motor, drives and
blower simply remove the fasteners
attaching the bottom access door
and remove door carefully. Hinged
access doors are provided on fan
models 106, 107, 206, and 207. Provide
support for hinged access doors before
removing fasteners. The door supports
weight of the motor, blower, and drive
components. Bolted access doors
are provided on fan models 108, 110,
112, 208, 210, and 212. Bolted access
doors do not support weight of any
components.
BELTS
Belts tend to stretch after a period
of time. They should be checked
periodically for wear and tightness.
When replacing belts, use the same
type as supplied with the unit. Loosen
the sliding motor plate to allow removal
of the belt by hand. Do not force belts
on or off. This may cause cords to
break, leading to premature belt failure.
Once installed, adjust belts as shown in
“Pre-Starting Checks”, Fig. 6 and Fig. 7.
MOTOR
Motor maintenance is generally limited
to cleaning and lubrication (where
applicable). Cleaning should be limited
to exterior surfaces only. Removing
dust and grease build-up on motor
housing assures proper motor cooling.
Use a brush or vacuum to remove dust.
Motors should never be sprayed with
water or solvents.
Greasing of the motor is only intended
when fittings are provided. Many
motors are permanently lubricated and
should not be lubricated further.
Motors supplied with grease fittings
should be greased in accordance with
manufacturer’s recommendations.
Use caution not to over lubricate. Oil
spillage collects dust and dirt which
may obstruct motor cooling openings.
Where motor temperatures do not
exceed 104ºF (40ºC), the grease should
Deflection = Belt Span
62.5 (in.)
Belt Span
(in.)
(in.)
CORRECT WRONG WRONG WRONG
CORRECT WRONG WRONG WRONG
3
®
Troubleshooting
WARNING: Disconnect and secure to the “OFF” position all electrical power to the fan prior to inspection or
servicing. Failure to comply with this safety precaution could result in serious injury or death.
PROBLEM CAUSE CORRECTIVE ACTION
REDUCED AIRFLOW System resistance is too high. Check dampers for proper operation. Remove
obstructions in ductwork. Clean dirty filters. Check
for adequate supply air.
Unit running backwards. Correct. Adjust as described in “Pre-Starting
Checks”, Fig. 4.
Excessive dirt on wheel. Clean wheel.
Loose belt or pulleys. Refer to Fig. 6 and adjust tension.
EXCESSIVE NOISE Mechanical looseness. Check all fasteners and set screws for tightness.
Check the ductwork for rattles.
Wheel unbalanced. Check for dirt build-up and clean wheel if required.
Bad bearings. Replace bearings.
Incorrect belt tension. Adjust belts as described in “Pre-Starting Checks”,
Fig. 6.
Foreign objects in blower. Remove objects, check for damage or unbalance.
Defective motor. Replace motor.
be replaced after 2,000 hours of
running times as a general rule.
WHEEL(S)
Wheels should be inspected for
dust and dirt accumulation at each
maintenance interval. Left unchecked,
dirt may cause wheel imbalance and
cause vibration. Keeping the wheel(s)
clean helps maintain a smooth and
quiet running fan.
FASTENERS
Any fan vibration has a tendency to
loosen mechanical fasteners. A periodic
inspection should include checking all
fasteners and set screws for tightness
prior to restarting the unit.
4
®