CaptiveAire ISQB Parts List

BELT DRIVE SQUARE INLINE BLOWERS

OPERATION INSTRUCTIONS AND PARTS MANUAL

General Safety

Rotating parts, (pulleys, shafts and belts) 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 never be opened with the fan running to avoid the sucking in foreign objects 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. Failure to comply with instructions could result in personal injury and/or property damage. Retain instructions for future reference.

General

Size Max.H.P. Shaft Dia. Weight

10 1 ¾ in. 62 12 1-1/2 ¾ in. 73 13 1-1/2 ¾ in. 85 15 2 ¾ in. 95 16 3 ¾ in. 123 18 3 1 in. 140 20 3 1 in. 165 22 5 1 in. 211 24 7-1/2 1-3/16 in. 241 27 7-1/2 1-3/16 in. 280

All shafts are keywayed

Inspect unit for damage, report any shipping damage to carrier. Check all fasteners, retighten as required. Rotate the blower wheel by hand to ensure free rotation If rubbing occurs, loosen the set screw(s), re-position the wheel to establish clearance, re-tighten set screws.

Installation (Fig. 1)

The (4) angle brackets provided allow for base or suspension mounting Suspension Mounting

For suspension mounting, install the (4) angle iron mounting brackets in the 4 upper corners (front & rear or both sides ) using the hardware provided, secure the unit to 4 customer provided suspension rods.

Base Mounting For base mounting, install the (4) angle iron mounting brackets in the 4 lower corners (front & rear or both sides) and secure to customer supplied base.

Vibration Isolation (not included) Recommended (spring or rubber) for both suspension or base mount

Suspension Mount

Install 4 supplied angle iron

mounting brackets on

upper cabinet front & rear

or sides (illustrated)

Customer supplied suspension rods (4)

Fig. 1

Base Mount

Install 4 supplied angle iron mounting on

Cabinet bottom front & rear (illustrated)

or both sides.

Motor, Pulleys & Belts

1. Select the appropriate drive set (motor, sheaves & belts) from the drive table (page 3) to obtain the blower RPM that will deliver the design performance (CFM & SP).

2. Remove the access panel from the drive compartment to expose the blower shaft. Mount the blower sheave on the shaft end and tighten the setscrew securely.

3. Remove the motor compartment cover to expose the motor mounting platform. Secure the motor to the platform, mount the adjustable motor pulley to the shaft end, align with the blower pulley using a straight edge ( see Fig. 2) and tighten the setscrew to secure the pulley to the motor shaft.

4. Install the belt(s) and raise the end of the pivoting motor platform to tension the belt and secure the platform in place with the positioning screws located on both sides of the platform.

DO NOT OVER TENSION

Belt Tension & Alignment

Warning

EXCESSIVE BELT TENSION IS THE MOST FREQUENT CAUSE

OF BEARING WEAR AND RESULTING NOISE.

PROPER BELT TENSION IS CRITICAL

FOR QUIET EFFICIENT OPERATION

Belt Alignment

Fig. 2

Ideal belt tension is the lowest value under which belt slip will

not occur at peak load conditions

Correct Wrong Wrong

Electrical

Warning:

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. Complete electrical connections as indicated.

Ensure power supply is disconnected & locked out prior to making electrical connections

Warning:

A ground wire must be connected from the motor housing to a suitable electrical ground.

Operation

1. After electrical connections are completed, energize the unit momentarily and ensure proper wheel rotation.

2. Apply full power.

3. With the air system in full operation, all ducts attached and both access doors in place, measure the motor current and ensure that it is less than the rated full load motor amperage as indicated on the motor nameplate.

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