Page 1
DELHI INDUSTRIES INC.
Figure 1: DELHI 200 SERIES
DESCRIPTION
UNPACKING
GENERAL SAFETY INSTRUCTIONS
INSTALLATION
NOTE: Check the interior of the blower housing. It should be clean and free of debris.
Maximum HP Ratings and Shaft Details
200 SERIES - INLINE DUCT BLOWERS
OPERATION INSTRUCTIONS AND PARTS MANUAL
MODELS: 207, 209, 210, 212, 215, 218
instructions
DELHI
200
Series
Blowers
are
designed
asaquiet
and
efficient
indoor
Once
the
packaging
has
been
removed
inspect
the
unit
carefully.
Check
for
loose,
missing,
or
damaged
parts.
Rotate
the
Blower
must
be
electrically
grounded.
This
canbeaccomplished
by
using
a
separate
ground
wire
Do
not
put
hands
nearorallow
loose
and
hanging
clothing
tobenear
belts,
pulleys,
or
blower
wheel
Read installation and operation instructions carefully before attempting to install, operate or service DELHI 200 SERIES
BLOWERS. Failure to comply with instructions could result in personal injury and/or property damage. Retain
for future reference.
inline duct blower for heating, air conditioning and ventilation systems.
These forward curved, double inlet blowers are enclosed in a sturdy steel
cabinet c/w reinforcing rails which are suitable for hanging bolts in
applications where suspended overhead duct work is required. Motor,
drive installations and servicing may be completed through access doors
located on either side of the cabinet.
Prelubricated ball bearings, motor platform and a dynamically balanced
wheel are standard equipment. Operating temperature range is -65 to 250
deg. F.
Model No.
207
209
210
215
218
wheel by hand to ensure the wheel spins freely. Tighten all set screws.
1
2
3
4
5
Always disconnect power source before working on or near a motor or its connected load. Lock the
power disconnect in the open position and tag to prevent unauthorized application of power.
Follow all local and national electrical and safety codes.
connected to the bare metal of blower frame, or other suitable means.
Ensure that the power source conforms to the requirements of your equipment.
while the unit is running.
Max. H.P. Shaft Dia.
3/4
1-1/2
1-1/2 keyway
3
5
3/4
3/4
1
1212
1
1
Shaft End
keyway3/4
keyway
keyway
keyway
keyway
1
DELHI INDUSTRIES INC., 523 JAMES ST., DELHI, ONTARIO, CANADA N4B 2Z3 PH:(519)582-2440 FX:(519)582-0581
SE-22-4
Rotate the blower wheel by hand. It should not rub against the housing inlet. If rubbing occurs, loosen
the set screws on the wheel hub and shift the wheel to obtain clearance. Retighten all set screws.
JULY 1999
Page 2
DELHI INDUSTRIES INC.
Suspension Mounting:
Base Mounting:
NOTE: Pulley alignment may change when adjusting variable pitch pulleys.
With
the
motor
adjusting
boltinits
minimum
position
install
theVbelt
within
the
sheave
grooves.
Adjust
belt
tension
by
turning
the
motor
adjustment
hook
bolt.
Ideal
belt
tension
is
the
lowest
proper
Suspend
the
unit
using
4
threaded
rods
through
the
four
(4)
7/8"
clearance
holes
located
at
the
top
Secure
the
unit
through
the
four
internal
(4)
7/8"
clearance
holes
toasolid
base.
Ensure
unit
is
Mount
the
blower
sheave
on
the
blower
shaft
and
tighten
its
set
screw
securely
on
the
keyofthe
Mount
the
motor
sheave
on
the
motor
shaft.
Leave
some
clearance
between
the
pulley
and
the
NOTE:
Flexible
inlet
and
outlet
duct
collars
are
recommended
to
minimize
vibration
WARNING:
A
GROUND
WIRE
MUST
BE
CONNECTED
FROM
THE
MOTOR
HOUSING
TO
A
2
of the unit or by means of an angle iron cradle (supplied by others) under the unit.
Figure 2: Installation Method
level. Complete installation of inlet and outlet ducts.
transmission.
3
shaft. (See Table 1 for Drive Data)
4
motor end bell. Tighten the set screws on the key of the motor shaft.
5
Slide the square head bolts into the channel provided in the motor bracket. Place the motor into
position, finger tighten the nuts to temporarily secure the motor. Attach the motor adjustment (belt
tension) assembly.
6
Slide the motor within the motor bracket to ensure proper pulley alignment (see Figure 3). A
straight edge across the face of the driven pulley should be parallel to the belt once proper
alignment has been achieved. Tighten the nuts on the motor base to anchor the motor position
within the bracket.
Figure 3: Pulley Alignment Figure 4: Bearing Replacement
7
tension at which the belt will not slip during start up. A rule of thumb suggests that 3/4" of deflection
mid span under medium finger pressure (2-3 lbs.) for every foot of span is approximately
belt tension. Lock the motor adjustment (belt tension) assembly once proper belt tension has been
achieved.
WARNING: EXCESSIVE BELT TENSION IS THE MOST FREQUENT CAUSE OF BEARING
WEAR AND RESULTING NOISE
8
Before connecting the motor to the electrical supply, check the electrical characteristics and wiring
instructions as indicated on the motor nameplate or inside the conduit box cover to ensure proper
voltage and phase. Make your electrical connections.
SUITABLE ELECTRICAL GROUND
SS-22-4
JULY 1999
Page 3
DELHI INDUSTRIES INC.
207
209
210
212
215
218
Pulley
Pulley
Range
48 FRAME
48 FRAME
FRAME
FRAME
FRAME
FRAME
OPERATION
MAINTENANCE
WARNING: DISCONNECT POWER SUPPLY BEFORE SERVICING THE BLOWER
After
electrical
connections
are
completed,
energize
the
unit
momentarily
and
ensure
that
the
rotation
of
the
wheel
is
correct
(see
Figure
2).
With
the
air
system
in
full
operation,
all
ducts
attached
and
top
cover
in
place,
measure
current
inputtothe
motor
and
ensure
thatitis
less
Inspect V-belts for wear and proper tension. If it is necessary to replace one belt on a multiple belt drive, replace all the belts with a matched
Table 1: Drive Table
NOTE TO CONVERT:
A) 48 FRAME TO 56/143T/145T FRAME ADD 1" TO BELT LENGTH
B) 56/143T/145T FRAME TO 182T/184T FRAME ADD 2" TO BELT LENGTH
C) 4L TO B BELTS SUBTRACT 3" FROM THE BELT LENGTH
(eg.: 4L48 EQUIVALENT TO A B45 - RPM WILL VARY SLIGHTLY)
Motor Blower RPM 56T/143T/145T 56T/143T/145T 56T/143T/145T 182T/184T
12 282 - 431 - - - - - - - - - 4L55 4L59 - - -
3-1/4" 10 340 - 519 - - - 4L45 4L48 4L51 4L55 - - -
9 379 - 578 4L40 4L44 4L46 4L49 4L54 - - -
3/4 HP 8 427 - 652 4L38 4L42 4L44 4L48 4L52 - - -
MAX. 7 490 - 749 4L36 4L40 4L42 4L46 - - - - - -
6 575 - 878 4L34 4L38 4L41 4L44 - - - - - -
5 696 - 1062 4L33 4L36 4L39 4L43 - - - - - BK160H 252 - 309 - - - - - - - - - - - - 4L65 4L47
BK140H 310 - 356 - - - - - - - - - - - - 4L61 4L67
BK130H 357 - 386 - - - - - - - - - - - - 4L60 4L65
BK120H 387 - 421 - - - - - - 4L50 4L53 4L58 B61
IVL34 BK110H 422 - 464 - - - 4L45 4L48 4L52 4L56 B59
BK100H 465 - 515 - - - 4L43 4L46 4L50 4L54 B57
BK90H 516 - 579 4L38 4L41 4L44 4L48 4L52 B55
BK80H 580 - 663 4L36 4L39 4L42 4L46 4L51 B54
BK70H 664 - 773 4L34 4L38 4L41 4L44 4L49 B52
BK60H 774 - 963 4L32 4L36 4L39 4L43 B45 B50
BK50H 964 - 1203 4L31 4L35 4L38 4L41 B43 - - -
BK40H 1204 - 1504 4L29 4L34 B34 B38 - - - - - BK130H 491 - 543 - - - - - - - - - - - - B59 B64
BK120H 544 - 592 - - - - - - 4L52 4L56 B57 B63
BK110H 593 - 648 - - - 4L47 4L50 4L54 B56 B61
BK100H 649 - 716 - - - 4L45 4L48 4L53 B54 B59
IVP44 BK90H 717 - 802 4L39 4L43 4L46 4L51 B52 B57
BK80H 803 - 911 4L37 4L41 4L44 4L49 B49 B55
BK70H 912 - 1053 4L35 4L39 4L42 4L47 B47 B53
BK60H 1054 - 1281 4L34 4L38 B39 B43 B47 - - -
1
Apply full power.
2
than the rated full load motor amperage.
Proper adjustment to the belt tension is critical for quiet efficient operation.
3
1
Inspect and tighten all bearing collar and wheel set screws after the first 50 to 100 hours of operation and periodically thereafter.
Follow motor manufacturer's instructions for motor lubrication. Remove any excess lubrication.
2
Check the drives.
3
a. Tighten set screws on sheaves, wheel and bearing locking collars.
b. Check belt tension and alignment.
c. Replace cracked or worn belts.
Check wiring to be sure it is secure and well insulated.
4
Blower bearings are permanently lubricated and require no further lubrication.
5
6
set. Do not use belt dressing.
7
Clean the blower wheel periodically. Material build up on the blades can cause wheel imbalance which may result in wheel or bearing
failure.
8
To reinstall replacement ball bearings press the locking collar against the inner ring of the bearing and turn in the direction of the shaft
rotation until engaged. Insert a drift pin into the pin hole and tap lightly to set. Tighten set screw on locking collar firmly (see Figure 4).
Should further service to the blower be necessary, refer to the exploded view illustration. (See Figure 5).
9
SE-22-4
JULY 1999
Page 4
DELHI INDUSTRIES INC.
DELHI INDUSTRIES INC. WARRANTY
Delhi Air Moving Products are guaranteed for a period of one year against manufacturing defects in material and
workmanship when operating under normal conditions. Liability is limited to the replacement of defective parts. Labour
and transportation costs are not included.
SE-22-4 JULY 1999
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