Spencer Single-Stage Scroll Blowers User Manual

Spencer®
Single-Stage	Serial No:
Scroll Blowers
	Model No:
Installation, Operation and
Maintenance Instructions

Important

Read and become familiar with this manual prior to uncrating and installing your Spencer Scroll Blower. Following the instructions detailed here will help you realize its full potential of efficient service and extended lifespan. Damage resulting from failure to follow correct procedure will void the warranty.

The Spencer Turbine Company Windsor, Connecticut 06095

Form FF12.1

Contents		Page
I	General Instructions ..............................................	2
II	Operation and Adjustments.....................................	5
III	Typical Scroll Blower ..............................................	7
IV	Replacement Parts.................................................	9
V	Lubrication Instructions............................................	9
VI	Trouble Shooting Guide .......................................	10

Before proceeding with this set-up, refer to the machine nameplate and record the machine number and serial number in the boxes on the manual front cover.

I. General Instructions

Important

Read and become familiar with this manual prior to uncrating and installing or storing machinery

– it is a precision piece of equipment capable of extended service and lifespan. Realization of this potential can best be achieved through proper handling and adherence to the following instructions. Damage resulting from failure to follow correct procedures will void warranty.

Spencer Service

Spencer service begins upon receipt of your request for equipment purchase. Our engineers welcome the opportunity to discuss your problems and will assist in determining specification requirements if so desired. To serve you promptly, we maintain a large inventory of electric motors and machine parts. Also, by combining under one roof the constantly supervised manufacturing, assembly, and test procedures, Spencer can assure you of a unit capable of optimum performance under the most severe service conditions. All Spencer machines are factory tested for load capacities and vibrational characteristics. This assures long, trouble-free operations.

Warranty

We warrant that this product will be free from defects in material and workmanship for a period of 18 months from date of shipment or 12 months from date of startup, whichever comes first. Within the warranty period, we shall repair or replace, F.O.B. our Factory or designated service center, such products that are determined by us to be defective.

This warranty will not apply to any product which has been subjected to misuse, negligence, or accident or, misapplied or improperly installed. This warranty will not apply to any product which has been disassembled, repaired or otherwise altered by any persons not authorized by our Service Department.

The guarantee of the motor, control, and component manufacturers govern the extent of our guarantee on such equipment. Warranty work on motors, controls, and components must be authorized by Spencer and must be performed in an authorized shop as designated by the motor, control, and component manufacturers. The Spencer Turbine Company reserves the right to invoice all expenses incurred when repairs are made in the field at the specific request of the customer.

Handling

This machine has been carefully balanced and tested at our factory. It is essential that it be handled with care during installation in order that you may be assured satisfactory performance.

Storage

Caution: If machine is to be stored for an extended period of time, it must be carefully protected from dampness, dirt and vibration. The inlet and discharge should be covered to keep foreign matter out; the motor shaft should be periodically rotated a few times by hand. Failure to comply with any of the preceeding will void warranty.

Location

Caution: Do not locate unit in excessively hot area (> 104 ˚F) unless equipment is designed for this condition.

Before placing the machine in its operating position, be sure that the blower and motor are readily accessible for servicing by allowing several feet of clear space around the machine. Inaccessibility can prove costly in both time and labor.

Foundation

No special foundation is necessary for the Scroll Blower. A level concrete floor or block is recommended, although any other substantial floor will prove satisfactory. The blower should be placed on cork isolating pads furnished. The blower should not be vertically, or “wall” mounted.

Tubing

All tubing should be of ample size to minimize frictional loss. It is absolutely essential that all joints be airtight and that there be no leaks in the system. Leaky air pipes consume a surprising amount of power and impair the operating efficiency of the machine. Piping should be properly supported without producing any stress or strain on the machine casing. It is further recommended that the rubber or isolation sleeve supplied with the machine be used to connect it to the tubing system.

Note: For complete warranty information, including our limitation of liability, consult Spencer’s Terms and Conditions of Sale - Form 706.

The Spencer Turbine Company 600 Day Hill Road, Windsor, CT 06095 TEL [phone] www.spencerturbine.com

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Rubber Inlet and Outlet Sleeve

The rubber connecting sleeve supplied with the scroll should be installed so that it covers a gap of approximately one inch as illustrated. The mounting clamps supplied with the sleeve should be adequately tightened to effect an air-tight connection.

Electrical

Caution: Be sure motor, starter, controls and other electrical equipment is the proper type suitable for the application and environment and complies with all applicable codes.

Be sure that the motor furnished with this machine is wound for the same type of voltage available at the installation site. In making the electrical connections, follow the wiring instructions furnished. Wire and fuses should be of ample capacity to insure that proper voltage is maintained at the motor terminals while starting and running. It is important that proper starting equipment be used. All AC machines should be equipped with a magnetic contactor or a manual or automatic compensator depending on the machine size and the installation regulations of the local power company. The starters should have thermal overload protection as well as true low-voltage protection.

Air Filters

The Spencer Turbine Company recommends the use of inlet air filters on all Scroll Blowers for pressure applications.

The use of any type of filter requires that it be kept clean to prevent excessive pressure drop in the lines. The dry element of the Spencer filter may be cleaned with soap & water and reused.

Silencers and Combination Filter-Silencers

Spencer offers silencers and combination filtersilencers for intake discharge, and bleed applications. The silencers should be properly supported at both ends. Rigid connection to the machine is not recommended. The tubing mount is recommended and connects to the machine with a rubber sleeve and a flange to tubing adapter.

Vacuum Applications

When the machine is used for vacuum, the outlet should discharge outdoors (preferred) or into a room having ample volume and proper ventilation in order to permit the air to escape and at the same time keep the unit at a reasonable temperature. Intake air must be kept clean through proper filtration methods.

Motor Rotation

The motor must be wired correctly to rotate the blower in the right direction. A rotation arrow is located on the blower housing. "Bump" or jog the start button and observe the direction of rotation of the motor shaft. This movement must agree with the rotation arrow. If the rotation is incorrect, the motor wiring must be changed.

This diagram shows the available discharge positions, viewed from the intake end, and the direction of blower rotation associated with each discharge position.

Coupling Alignment

The coupling on this machine was carefully aligned at the factory and the coupling halves and shell(s) marked to indicate optimum relative position. However, transportation may have caused coupling misalignment.

Caution: Check the motor and blower shafts for misalignment and carefully realign them if necessary after Installation and before startup, as misalignment can cause destructive vibration. Coupling alignment should be rechecked again after an hour's operation. Final alignment should be made at average operating temperature. After each alignment check, add lubricant per instructions and replace coupling guard.

WARNING: DISCONNECT AND LOCK OUT ELECTRICAL POWER BEFORE PERFORMING ALIGNMENT.

On certain blowers, the coupling is disassembled after factory alignment and marking. The coupling halves are specially protected against the elements during shipping. Prior to startup, assemble the coupling, align keyways using factory markings and lubricate as instructed.

The Spencer Turbine Company 600 Day Hill Road, Windsor, CT 06095 TEL [phone] www.spencerturbine.com

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Coupling alignment lines up the motor shaft and blower shaft in horizontal and vertical planes. It also ensures an adequate clearance (gap) between the two coupling halves. Only qualified personnel should attempt to align a coupling. If problems arise, contact Spencer or your Spencer Representative.

Sier Bath Gear-Type Couplings, manufactured to our rigid specifications, are most commonly supplied with Spencer equipment.

Sier Bath	Hub to Hub
Coupling Size, In.	Gap, ln.
7/8	1/8
1-1/2	1/8
2	1/8
2-1/2	1/4
3	1/4
3-1/2	1/4
4	1/4
4-1/2	1/4
5	1/4

Remove one snap ring and slide the sleeve off the hub halves. Using a feeler gage, verify that the gap between the coupling halves agrees with this table.

Caution: Some motor shafts are spring-loaded axially. Be careful when using the feeler gage to avoid compressing the shaft and disturbing the normal at-rest position.

Machinery Soft Foot

Imperfections or unevenness between the machine base and any foot of the motor or blower creates a condition known as soft foot, which may be parallel or angular. If uncorrected, soft foot leads to increased stress and high vibration. Although both the motor and blower feet were preset at the factory, each foot must be checked for soft foot prior to alignment. Any vertical or angular soft foot that exceeds .003" is excessive and must be corrected.

Laser Alignment Technique (Recommended)

Laser systems have significant advantages such as reduced maintenance costs and energy consumption; prolonged life for bearings, seals and couplings; decreased bearing temperatures and lower vibration levels. Many laser systems also identify and measure soft foot conditions.

NOTE: Consult an alignment specialist if laser equipment is not available.

Reverse Indicator Method (Permissible)

This method may be done electronically following the instrument manufacturer's instructions or by means of dial indicators as follows:

1.Reinstall the coupling sleeve, seal and snap ring.

2.Clamp dial indicators on shafts 180° apart as shown.

3.Place indicator probes on opposite shafts as shown.

4.Rotate both shafts simultaneously in the correct operating direction, taking readings at 90° intervals.

5.Adjust motor to achieve parallel and angular alignment. If questions arise, contact the Spencer Service Department.

Straightedge Method (Permissible)

1.Remove old lubricant and clean the hub teeth.

2.Set a machine shop quality straightedge across the coupling hubs (at the root diameter of the gear teeth).

3.Adjust the motor so the straightedge is evenly supported between the coupling hubs at the 3, 6, 9 and 12 o'clock positions.

4.Using a feeler gage, measure the clearance between the coupling hubs at the 3, 6, 9 and 12 o'clock positions.

5.Adjust the motor so the gap is identical at all four positions and in accord with the table of hub to hub gaps.

The Spencer Turbine Company 600 Day Hill Road, Windsor, CT 06095 TEL [phone] www.spencerturbine.com

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