Delhi Industries Inc. 523 James Street, Delhi, Ontario N4B 2Z3
Tel. (519) 582-2440 Fax. (519) 582-0581 www.delhi-industries.com
BI SERIES – UTILITY BLOWERS
OPERATION INSTRUCTIONS AND PARTS MANUAL
MODELS: BI-10 THROUGH BI-36, BI-10RM THROUGH BI-36RM
GENERAL SAFETY
Rotating parts on fans should not be exposed. Where these components are not protected by ductwork, cabinets or
covers, appropriate guards should be employed to restrict exposure to rotating parts. Access doors should not be
opened with the fan operating to avoid foreign objects being drawn into the system. On initial start-up a careful
inspection should be carried out to ensure no foreign material is present which could become airborne in the system.
Read installation and operation instructions carefully before attempting to install, operate or service Delhi BI/BI-RM
Series Blowers. Failure to comply with instructions could result in personal injury and/or property damage. Retain
instructions for future reference.
UNIT DESCRIPTION
DELHI BI series blowers are specifically designed as a quiet and efficient blower. The BI series incorporates a
backwardly inclined (BI) blade configuration to generate air moving performance. The BI series are single inlet blowers,
which have a standard CCW rotation and bottom horizontal discharge. The discharge direction may be easily altered to
any one of eight positions without removal of the wheel venturi or housing.
Complete access for motor and drive installations and servicing may be completed by partial removal of the drive
compartment cover assembly. Pre-lubricated ball bearings, motor adjustment hardware and a dynamically balanced
wheel are standard equipment. Operating temperature range is –65 to 220 deg. F.
Fig. 1
MODEL MAX. H.P SHAFT DIA. WEIGHT
BI-10/BI-10RM 2 ¾ 78
BI-12/BI-12RM 5 1 112
BI-13/BI-13RM 7-1/2 1 134
BI-15/BI-15RM 7-1/2 1 140
BI-16/BI-16RM 10 1-3/16 162
BI-18/BI-18RM 10 1-3/16 172
BI-20/BI-20RM 10 1-3/16 289
BI-22/BI-22RM 15 1-3/16 322
BI-24/BI-24RM 15 1-7/16 385
BI-27/BI-27RM 15 1-7/16 411
BI-30/BI-30RM 15 1-11/16 517
BI-33/BI-33RM 20 1-11/16 607
BI-36/BI-36RM 25 1-15/16 747
ALL SHAFTS ARE KEYWAYED
GENERAL
Inspect unit for damage, report any shipping damage to carrier. Check all fasteners and re-tighten as required. Rotate
the blower wheel by hand to ensure free rotation. If rubbing occurs, loosen the inlet venturi bolts, re-position the venturi
to establish clearance, re-tighten bolts.
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