Republic Manufacturing RB800 Instructions for use

CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
R
MANUFACTURING
EPUBLIC
RB800
RB1200HC
RB2400
COMBINED FLUID PRODUCTS COMPANY
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2
REPUBLIC NOTES
Service procedures should only be performed by trained service personnel.
CONTENTS
Read the following safety instructions carefully. Disconnect blower from electrical source before
attempting service.
WARNING
IMPORTANT
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3
REPUBLIC NOTES CONTENTS
Filter Maintenance...............................................15
Bearing Maintenance...........................................16
Tension Pulley Maintenance................................17
Motor Pulley and Bushing Maintenance.............18
Bore Part Number............................................... 19
Replacement Parts..........................................20-22
Trouble Shooting Guidelines..........................23-24
Warranty Terms and Conditions.........................25
Warning and Important Note................................2
Safety Instructions.................................................4
Drive Belt Information..........................................5
Belt Sizing Information.........................................5
Belt Removal and Installation............................6-8
Spring Replacement Installation...........................9
RB2400 Replacement Parts Reference.................10
Belt Maintenance..................................................11
Motor Pulley Information...................................12
Motor Pulley Installation.....................................13
Blower Pulley Removal........................................14
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4
SAFETY INSTRUCTIONS
1. Always use qualied electrical and mechanical personnel for installation and maintenance of Republic
blowers and motors.
2. Disconnect the electrical power at the motor starter, fuse box or circuit breaker before working on the
system. Take special precautions to make sure the power cannot be turned on while you are working on the
blower. Use an approved Lock Out/Tag Out system.
3. Make sure the motor is electrically grounded, the mounting bolts are properly secured, and all guards are
in place before start-up.
4. Wear safety glasses and earplugs when working on the blower, air knife or discharge nozzles within a
Republic Blower System.
5. Do not operate blower/motor assembly with the belt guard removed. Make sure to install the inlet air lter
or piping to blower inlet, before starting the blower/motor.
6. Do not operate blower with the outlet open to atmosphere. Connect system piping or buttery valve to
prevent overloading the motor. Check the nal installation for proper amp loads.
7. Keep all tools, loose clothing and hands away from rotating or moving parts while the unit is running.
Never run the blower unit without the belt guard installed.
8. Inspect the blower at regular intervals for damaged or worn parts. REPLACE DAMAGED PARTS
IMMEDIATELY. DO NOT CONNECT OR TURN ON A DAMAGED BLOWER.
9. Inspect the inlet air lter at regular intervals and replace when necessary. A dirty air lter can cause
improper blower performance.
10. Use only genuine Republic Manufacturing brand replacement parts.
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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5
DRIVE BELT INFORMATION
Republic utilizes a 16-groove belt on all its centrifugal blowers and has the part number stamped on the at
side of the belt. Republic recommends that you keep spare belts in stock. It is also recommended that replace-
ment belts be purchased from a Republic distributor, to ensure that belt quality and blower performance are maintained.
Belts do vary from manufacturer to manufacturer, and all Republic belts are inspected for belt thickness and
imperfections prior to shipment.
BELT SIZING INFORMATION
Please nd the part number stamped on the face of the small stainless steel blower pulley, and then refer to the
following chart for the correct belt size.
RB800/ RB1200HC REPLACEMENT PARTS REFERENCE
Blower Pulley Part No. Belt Part No. Tension Pulley Part No.
RB800 RB1200HC RB800 RB800-STB RB1200HC RB800 RB1200HC
230-0145 N/A 230-3800K 230-5925 N/A 200-0214 N/A
230-0155 231-0155 230-3800K 230-5925 230-4600K 200-0214 200-0206
230-0165 231-0165 230-3800K 230-5925 230-4600K 200-0214 200-0206
230-0175 231-0175 230-3800K 230-5925 230-4700K 200-0214 200-0206
230-0185 231-0185 230-3800K 230-5925 230-4700K 200-0214 200-0206
230-0195 231-0195 230-3800K 230-5925 230-4700K 200-0214 200-0206
230-0205 231-0205 230-3800K 230-5925 230-4700K 200-0214 200-0206
230-0215 231-0215 230-3900K 230-5925 230-4700K 200-0214 200-0206
230-0225 231-0225 230-3900K 230-5925 230-4700K 200-0214 200-0206
230-0235 231-0235 230-3900K N/A 230-4700K 200-0214 200-0206
230-0245 231-0245 230-3900K N/A 230-4700K 200-0214 200-0206
230-0255 231-0255 230-3900K N/A 230-4800K 200-0214 200-0206
230-0265 231-0265 230-3900K N/A 230-4800K 200-0214 200-0206
230-0275 231-0275 230-3950K N/A 230-4800K 200-0214 200-0206
230-0285 231-0285 230-3950K N/A 230-4900K 200-0214 200-0206
230-0295 231-0295 230-3950K N/A 230-4900K 200-0214 200-0206
Important: Replace spring with every belt replacement to ensure proper tension on your new belt. e follow-
ing pages should show the proper procedures for belt installation and removal and for spring replacement.
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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6
BELT REMOVAL AND INSTALLATION
FIGURE 1
e same belt removal and installation procedure ap-
plies for the RB2400 model with one exception– there
are two (2) belts.
NOTE:
Tension Block rotated
counterclockwise (CCW)
(Tension Pulley removed
for clarity)
In order to remove or replace the Belt, the Tension
Block Assembly must be rotated out of the way to
allow for the Tension Arm to swing (CW). Loosen
the 5/16-18 SHCS as shown in Figure 1, the screw is
located on the backside of the Mounting Plate. Use a
1/4” allen wrench (not shown) on the 5/16-18 SHCS.
FIGURE 2
Once the 5/16-18 SHCS is removed, rotate the Tension
Block (CCW) to allow for the Tension Arm to swing
(CW) as shown in Detail B.
Tension Arm
DETAIL B
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RB800, RB1200HC, RB2400
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7
DETAIL B
Using a 1” open-end wrench, as shown in Figures 3 and 4, rotate the Tension Arm Assembly clockwise (CW)
and remove the Belt. You may release the pressure on the wrench and allow the Tension Arm to swing back
into position once the Belt has been removed.
BELT REMOVAL AND INSTALLATION
1” Open End
Wrench
Tension Block
rotated away
Tension Pulley rotated
away from belt
Set Screws
Tension Pulley
Belt
FIGURE 3 FIGURE 4
Blower Pulley
Motor Pulley
FIGURE 5 FIGURE 6
Using a 1” open-end wrench, rotate the Tension Arm Assembly clockwise (CW). Wrap the new or replacement
Belt around the Blower Pulley and then onto the Motor Pulley as shown in Figures 5 and 6. Once the Belt is in
place and the wrench is removed, verify that the Belt is seated into all the grooves on both pulleys by manually
rotating the Motor Pulley (large pulley), and checking the alignment of the Belt on the groves.
e same belt removal and installation procedure applies for the
RB2400 Model with one exception– there are two (2) belts.
NOTE:
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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8
BELT REMOVAL AND INSTALLATION
FIGURE 7
FIGURE 8
Serial No. Location
Tension Arm
5/16-18 SHCS for
Tension Block
Tension Block
DETAIL B
Rubber Block
5/16-18 Hex Nut
5/16-18 SS Hex
HD Screw
Tension Block
(Tension Pulley removed for clarity)
Rotate the Tension Block (CW) back into position
and reinstall 5/16-18 SHCS through the back side of
the Mounting Plate using a 1/4” allen wrench.
e Tension Block is not to be used for tensioning the belt. e purpose of the Tension
Block is to help control the Tension Arm “backlash” on motors with high starting torque.
NOTE:
Using a at blade screwdriver, adjust the
slotted 5/16-18 SS Hex Head screw on
the Tension Block until the Hex Head
just touches the Rubber Block on the
Tension Arm assembly. Tighten jam nut
with a 1/4” wrench and reinstall the belt
guard cover.
e hex head screw is not designed to put additional pressure on the Tension Arm or Belt, it is intended to pre-
vent the backward movement of high torque motors.
NOTES:
e same belt removal and installation procedure applies for the RB2400 Model with one exception– there are
two (2) belts.
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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9
SPRING REPLACEMENT INSTALLATION
Important–Replace spring when replacing belt to insure proper tension on you new belt.
1. Remove spring from 1/4 shoulder bolt on blower mounting plate.
2. Remove the tension pulley assemply from mounting plate by removing pivot pin (Item 11).
3. Remove the tension pulley sha (Item 3). THis sha has le-handed threads, so you will need to turn
clockwise to loosen. Items 4, 5, 6, 13, and 14 will remain attached to Item 3.
4. Remove shoulder bolt (Item 12).
5. Replace spring and reinstall shoulder bolt (Item 12).
6. Reinstall tension pulley assembly to mounting plate by tightening pivot pin (Item 11). Use Loctite 242
(removable strength) and torque to 25 /lbs.
7. Apply Loctite 242 (removable strength) to tension pulley sha threads (Item 3) and install to tension arm
(Item 2). Twist tension pulley sha counterclockwise to tighten.
8. Reinstall spring to 1/4 shoulder bolt on blower back plate.
Mounting Plate
1/4 Shoulder Bolt
Item No. Part No. Qty. Description
1 210-0701 1 Spring Ext. .080 Tension Pulley
2 290-0107 1 Tension Arm
3 250-0406 1 Bearing 6301-2RS
4 250-0701 2 Shaft TP Double Brg.
5 230-0707 1 5” Double Bearing Tension Pulley
6 210-0502 1 Retaining Ring N5000-145
7 290-0201 1 Rubber Block
8 210-1504 2 Screw, SS 1/4-20 x 5/8 Button Soc. Hd.
9 250-0703 2 Flanged Nylon Bearing 10L7-F
10 210-0310 1 Washer, SS 1-3/16 x 5/16 x .058
11 250-0402 1 Pivot Pin Tension Pulley
12 210-0603 1 Shoulder Bolt, SS 3/16 x 5/16
13 250-1007 1 Seal TP CR6767
14 250-1008 1 Seal CR13514
Spring replacement procedure is the
same for both the 4” and 5” Tension
Pulley Assemblies.
NOTES:
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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10
e RB2400 model comes equipped with two (2) blower heads and may require a combination of Tension
Pulley Assemblies. When looking at the belt side or the belt guard side of this blower, the le side head is
called and engraved with the letters “H1” and the right side head is called and engraved with the letters “H2”.
e center distance of the motor pulley and blower pulley sha on the “H1” side is slightly shorter than the
“H2” side.
In order for the proper belt sizes to function on this blower, the combination of 4” and 5” Tension Pulley
assemblies were incorporated. Use the chart below to nd which Tension Pulley is required on either the
“H1” side or “H2” side of the blower.
RB2400 REPLACEMENT PARTS REFERENCE
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
RB2400 REPLACEMENT PARTS REFERENCE
Blower Pulley Part No. Belt Part No. Tension Pulley Part No.
RB2400 H1 Side RB2400 H2 Side RB2400 H1 Side RB2400 H2 Side
231-0175 230-5200K 230-5500K 200-0206 200-0214
231-0185 230-5200K 230-5500K 200-0206 200-0214
231-0195 230-5200K 230-5600K 200-0206 200-0206
231-0205 230-5200K 230-5600K 200-0206 200-0206
231-0215 230-5200K 230-5600K 200-0214 200-0206
231-0225 230-5200K 230-5600K 200-0214 200-0214
231-0235 230-5200K 230-5600K 200-0214 200-0214
231-0245 230-5300K 230-5600K 200-0206 200-0214
231-0255 230-5300K 230-5600K 200-0206 200-0214
231-0265 230-5300K 230-5600K 200-0206 200-0214
231-0275 230-5300K 230-5600K 200-0206 200-0214
231-0285 230-5300K 230-5800K 200-0206 200-0206
231-0295 230-5300K 230-5800K 200-0206 200-0206
200-0206 = 5”Tension Pulley Assembly
200-0214 = 4”Tension Pulley Assembly
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11
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
BELT MAINTENANCE
Replacement Pulley Part No.–Refer to appropriate blower replacement part reference chart.
RB800/ 1200HC PAGES 5
RB2400 PAGES 10 Belt life varies greatly depending on plant
contamination levels, temperature, number
of stop/starts per hour, and number of hours
per days the blower is used.
Typical change intervals are every 3-9 months depending on the above conditions.
- Always change the spring and belt at the same time.
- You should stock a spare belt and spring.
VIEW A-A
VIEW LOOKING AT BELT SIDE
See the Motor Pulley section (pages 93-95) for
instructions on installation, removal and alignment
of motor pulley.
See the Drive Belt section (pages 86-88) for
instructions and installation, removal and alignment
of belt.
Use the “H2” Blower Pulley to align the RB2400
Motor Pulley.
H2 Side
H1 Side
Straight Edge
Mounting Plate
Straight Edge
Blower Pulley
Motor Pulley
H2 Head
H1 Head
Tension Pulley
Assembly
Belt Guard
H2
Head
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- When installing a new motor pulley or servicing your existing unit, make sure that the outer grooves on
both the motor pulley and blower pulley are not damaged, nicked or dinged.
- Damaged pulley grooves can cause premature belt failures or higher than normal levels of vibration.
- Be sure to use a Torque wrench when installing the Motor Pulley.
- Torque the set screws to 36 ./lbs. or 430 in./lbs.
- Torque the set screws evenly to ensure proper alignment.
Motor
Blower Pulley Face
Blower Pulley
1/2-13 Hex Head
Screw 4 Pls
Set Screws
Taper-Lock Bushing
Motor Pulley Face
Tension Pulley has been removed in the views for clarity purposes.
NOTES:
MOTOR PULLEY INFORMATION
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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13
MOTOR PULLEY INSTALLATION
DETAIL C
Motor Pulley Installation Procedure
0” TO +/- 1/32”
Straight Edge
Straight Edge
Additional two (2) holes
are for installation
Middle Hole is
for Removal
Mounting Plate
Radially Rotate the Straight
Edge to Align Blower Pulley
1. Install Bushing into Motor Pulley with set screws. en install the Motor Pulley Assembly onto the
motor’s sha.
2. Use a straight edge to align the Motor Pulley Face with the Blower Pulley Face. Alignment must be
within 0” to ± 1/32”. e straight edge must be able to rotate radially and lay ush on two faces of the mo-
tor pulley while lying ush on the face of the blower pulley to insure proper alignment (see Detail C).
3. Insert a screw driver through one of the Motor Pulley’s and Mounting Plate’s holes to keep the Motor
Pulley from rotating while tightening the set screws.
4. Using a Torque wrench, set the torque to 36 ./lbs.. and then torque the set screws equally.
is same Motor Pulley installation procedure applies to the RB2400 Blower.
NOTES:
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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14
MOTOR PULLEY REMOVAL
Motor Pulley Removal Procedure
is same Motor Pulley installation procedure applies to the RB2400 Blower.
NOTES:
DETAIL A
Motor
1/2-13 Hex Head
Screw 4 Pls
Blower Pulley
Taper-Lock
Bushing
Set Screws
Motor Pulley Face Blower Pulley Face
Middle Hole in Bushing is
for Removal
Set Screw Installation
Holes
Mounting Plate
Mounting Plate Hole
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
1. Line up one Motor Pulley Hole to Mounting Plate Hole and insert a screw driver through, restricting
the Motor Pulley rotation.
2. Use a 1/4” Allen wrench and remove the two (2) set screws from the Motor Pulley and Bushing.
3. Insert one of the removed set screws into the top Middle Hole of the Bushing.
4. While still keeping the Motor Pulley from rotating, tighten the Middle Hole set screw until the Motor
Pulley separates from the Bushing.
5. When the Motor Pulley is loose, slide it o the motor sha.
6. Be careful not the drop the Motor Pulley and damage the grooves.
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
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15
Motor
BLOWER MAINTENANCE SCHEDULE
Filter
Maintenance
Replacement Filter Reference
Small Paper 340-1000 Small Polyester 340-2000
Large Paper 340-1002 Large Polyester 340-2002
Filters should be changed as needed to maintain a dierential pressure of less than 10” (inches) of water
pressure dierential. e dial on your lter change gauge should be in the green zone. Normal change intervals
are between every two (2) weeks and 90 days depending on the contamination levels in your plant. See Filter
Data Reference for additional information.
Filter Data Reference
Small Paper 880 CFM Min. Temp. -15°F/Max. Temp. 220°F 99.9% eciency to 10 Micron
Large Paper 1100 CFM Min. Temp. -15°F/Max. Temp. 220°F 99.9% eciency to 10 Micron
Small Polyester 880 CFM Min. Temp. -15°F/Max. Temp. 220°F 99.9% eciency to 10 Micron
Large Polyester 1100 CFM Min. Temp. -15°F/Max. Temp. 220°F 99.9% eciency to 10 Micron
e HEPA lter element should be changed to maintain less than 10” (inches) of water pressure dierential.
e dial on your lter change gauge should be in the green zone. e change interval is once every six (6)
months. See Filter Data Reference for additional information.
HEPA Filter Maintenance
HEPA Filter Data Reference
HEPA Filter 1000 CFM @ 1”W.C. Min. Temp. -15°F/Max. Temp. 220°F 99.9% eciency @ 0.12 Micron and larger
Enclosure Filter Maintenance
is lter is designed to remove large contaminants from entering
the inside of your enclosure. If this lter gets dirty, your blower
could overheat and discharge pressure could be reduced.
is lter is designed to remove large contaminants from entering
the inside of your enclosure. It is an oil wetted wire mesh lter.
Recommended cleaning interval is weekly or as needed in your
facility. If this lter gets dirty, your blower could overheat and
discharge pressure could be reduced.
1. Blow o contaminants with compressed air.
2. Clean with solvent in a parts washing tank.
3. Spray with a light coating of WD 40 or similar lightweight oil.
REPLACEMENT PART NO.
292-0002 (METALLIC)
REPLACEMENT PART
NO. 292-0001 (PAPER)
CLEANING PROCEDURE
FOR PART NO. 292-0002
Pulley Alignment
Proper pulley alignment is very important. Please see alignment instructions on pages 13.
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
COMBINED FLUID PRODUCTS COMPANY
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16
BEARING MAINTENANCE
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
Bearings are a greased for life design. Bearings are assembled in a clean room environment. Do not attempt
to grease bearings or your warranty will be void. If bearings fail in the blower housing, Republic recommends
changing the entire bearing cartridge with a new cartridge, impeller, and blower pulley. is assembly should
be balanced.
REPLACEMENT RB800 BEARING HOUSING
ASSEMBLY REFERENCE
Blower Pulley
Part No.
Bearing Housing
Assy. Part No.
230-0175 200-4175
230-0185 200-4185
230-0195 200-4195
230-0205 200-4205
230-0215 200-4215
230-0225 200-4225
230-0235 200-4235
230-0245 200-4245
230-0255 200-4255
230-0265 200-4265
230-0275 200-4275
230-0285 200-4285
230-0295 200-4295
REPLACEMENT RB1200HC/ 2400 BEAR-
ING HOUSING ASSEMBLY REFERENCE
Blower Pulley
Part No.
Bearing Housing
Assy. Part No.
231-0175 200-9175
231-0185 200-9185
231-0195 200-9195
231-0205 200-9205
231-0215 200-9215
231-0225 200-9225
231-0235 200-9235
231-0245 200-9245
231-0255 200-9255
231-0265 200-9265
231-0275 200-9275
231-0285 200-9285
231-0295 200-9295
COMBINED FLUID PRODUCTS COMPANY
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17
SPRING REPLACEMENT
Replacement Pulley Part No.–Refer to appropriate blower replacement part reference chart.
RB800 Page 20
RB1200HC Page 21
RB2400 Page 22
e Tension Pulley also has sealed for life
bearings. e bearings can be replaced when
worn or the entire Tension Arm Assembly.
REFER TO PAGE 8 FOR INSTALLATION GUIDELINES AND PARTS
BREAKDOWN.
Tension Pulley Maintenance
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
COMBINED FLUID PRODUCTS COMPANY
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18
MOTOR PULLEY AND BUSHING MAINTENANCE
Replacement Motor Pulley Reference
RB800 230-1026
RB1200HC 230-1025
RB2400 230-1022
When installing a new motor pulley or servicing your existing unit, verify the outer grooves on both the motor
pulley and blower pulley are not damaged, nicked or dinged. Damaged pulley grooves can cause premature
belt failures or higher than normal levels of vibration. Be sure to use a torque wrench when installing the motor
pulley. Torque the setscrews to 36 ./lb. or 430 in./lb. Torque the setscrews evenly to ensure proper alignment.
Replacement Motor Pulley Bushing
Reference
3 HP 230-4001
5 HP 230-4001
7.5 HP 230-4002
10 HP 230-4002
15 HP 230-4002
20 HP 230-4003
25 HP 230-4003
30 HP 230-4003
40 HP 230-4005
50 HP 230-4005
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
COMBINED FLUID PRODUCTS COMPANY
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19
Republic
RBS 106
Republic Blowers Systems
®
Republic Centrifugal Blower Owner’s Manual
Motor HP Bushing Part. No. Bore
3HP 230-4001 1-1/8”
5HP 230-4001 1-1/8”
7.5HP 230-4002 1-3/8”
10HP 230-4002 1-3/8”
15HP 230-4002 1-3/8”
20HP 230-4003 1-5/8”
25HP 230-4003 1-5/8”
30HP 230-4003 1-5/8”
40HP 230-4005 1-7/8”
50HP 230-4005 1-7/8”
210-1005
Set Screw
See chart for Taper
Lock Bushing
210-1005
Set Screw
230-1026
Motor Pulley
RB800
See chart for Taper
Lock Bushing
210-1005
Set Screw 230-1025
Motor Pulley
RB1200HC
RB2400
See chart for Taper
Lock Bushing
210-1005
Set Screw
230-1022
Motor Pulley
Motor HP Bushing Part No. Bore
3 HP 230-4001 1-1/8”
5 HP 230-4001 1-1/8”
7.5 HP 230-4002 1-3/8”
10 HP 230-4002 1-3/8”
15 HP 230-4002 1-3/8”
20 HP 230-4003 1-5/8”
25 HP 230-4003 1-5/8”
30 HP 230-4003 1-5/8”
40 HP 230-4005 1-7/8”
50 HP 230-4005 1-7/8”
REPUBLIC CENTRIFUGAL BLOWER MAINTENANCE SCHEDULE
RB800, RB1200HC, RB2400
BORE PART NUMBER
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