Republic Regenerative Blowers HRC100 Manual
R
MANUFACTURING
EPUBLIC
HRC/4RC-SERIES
REGENERATIVE BLOWER
Installation &
Operating Instructions
OM011 Rev.B
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800.847.0380 2
Republic Regenerative Blowers
HRC100-HRC1502 • 4RC210-4RC630
Installation Instructions & Operating Manual
Republic Manufacturing®
5131 Cash Road
Dallas, TX 75247
(214) 631-8070
www.republic-mfg.com
info@republic-mfg.com
Warning
Important
Service procedures beyond the scope of this manual should only be performed by trained service personnel
at Republic Manufacturing.
Read the following safety instructions carefully. Disconnect blower from electrical source using an approved
lockout/tagout procedure before attempting service
1. Side channel
2. Air inlet
3. Impeller
4. Impeller chamber
5. Exhaust outlet
Working Principle
Air or gas is pulled into a side
channel (1) through the air
inlet (2) and is accelerated by
an impeller (3) rotating inside
the impeller chamber (4). The
resulting pressurized air or
gas is discharged through the
exhaust outlet (5). This type of
operation is also known as a
ring blower design.
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Table of Contents
Contact Us.........................................................................................................................................................................2
Working Principle..........................................................................................................................................................2
Safety Instructions .........................................................................................................................................................4
Lockout/Tagout Procedures.......................................................................................................................................5
Blower Description and Model Identication....................................................................................................5
Equipment Arrival and Inspection .........................................................................................................................5
Storage Conditions ........................................................................................................................................................6
Long Term Storage........................................................................................................................................................6
Commissioning Aer Longer Standstill....................................................................................................................6
Suitability & Environmental Conditions..............................................................................................................6
Space Required for Installation ................................................................................................................................6
Intended Use
is Operating Manual ................................................................................................................................................7
e HRC100-1502 & 4RC210-630.............................................................................................................................7
Foreseeable Misuse .......................................................................................................................................................7
Technical Data.................................................................................................................................................................8
Tightening Torques for Screw Connections..............................................................................................................9
Installation ......................................................................................................................................................................10
Plumbing & Accessories ............................................................................................................................................10
Typical Pressure Layout................................................................................................................................11
Typical Vacuum Layout................................................................................................................................11
Electrical Connection.................................................................................................................................................12
Wiring Diagram - Single Phase ...................................................................................................................13
Wiring Diagram - ree Phase....................................................................................................................13
Commissioning.............................................................................................................................................................14
Preparation ..................................................................................................................................................................14
Start-Up........................................................................................................................................................................14
Shut-Down...................................................................................................................................................................14
Operation ........................................................................................................................................................................15
Shut-Down & Longer Standstills ...........................................................................................................................15
Servicing .........................................................................................................................................................................15
Emptying/Rinsing/Cleaning......................................................................................................................................15
Preventative Maintenance..........................................................................................................................................15
Troubleshooting..........................................................................................................................................................16
In the Event of a Breakdown ..................................................................................................................................17
When to Ship the Blower Back to Republic .....................................................................................................17
Disabling, Dismantling, and Scrapping of Blower .........................................................................................17
Warranty Terms and Conditions ..........................................................................................................................17
Exploded Parts Breakdown......................................................................................................................................18
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Safety Instructions
To insure safe operation, we have provided many important safety guidelines in this manual for the Republic Regenerative
Blower. Please read this manual carefully and pay particular attention to instructions with the following signs:
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING:Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
1. Always use qualied 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 lockout/tagout 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 or components within a Republic Blower system.
5. Check the nal installation for proper amp loads.
6. Keep all tools, loose clothing and hands away from rotating or moving parts while the unit is running.
7. Inspect the blower at regular intervals for damaged or worn parts. Replace damaged parts immediately! Do not
connect or turn on a damaged blower!
8. Inspect the inlet air lter at regular intervals and replace when necessary. A dirty air lter can cause improper blower
performance.
9. Use only genuine Republic Manufacturing brand replacement parts.
10. Refer to Troubleshooting section of manual.
11. Make sure to install the inlet air lter or piping to blower inlet before starting the blower/motor.
12. Water, other liquids, aggressive or inammable gases and vapors may not be handled. Handling of inammable or
aggressive gases and vapors is only possible with special versions.
13. Improper use of the unit can result in serious or even fatal injuries. Only operate the blower for the purposes indicated
under “Intended Use”, with the uids indicated under “Intended Use”and with the values indicated under“Technical
Data”.
14. High temperatures of up to approximately 320oF (160oC) can occur on the surface of the blower. Allow to cool down
after shut-down.
PROTECT EYES & EARS
Moving parts can crush and
cut.
Do not operate with guard
removed.
Lock-out/tagout before
servicing.
WARNING
HOT SURFACE
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Blower Description & Model Identication
Republic Manufacturing Regenerative Blowers are industrial grade regenerative blowers capable of producing high pressure air at
low operating costs. Many models are available within each series:
HRC-Series: Standard regenerative blowers with integral motor operating at 50 or 60 Hz, with 3 or 1 phase motor.
0.5-38.9 HP (0.4-29.0 kW) Motor Sizes
4RC-Series: High pressure regenerative blowers with integral motor operating at 50 or 60 Hz, with 3 or 1 phase motor.
0.7-11.5 HP (0.5-8.6 kW)
Republic Blowers have a nameplate containing the serial and model number located on the blower head near the exhaust port.
When placing a service call, please provide the Republic serial number. Call us at (800) 847-0380 or e-mail [email protected]om.
Models come with 1.25 in. (31.8 mm), 2.0 in. (50.8 mm), 2.5 in. (63.5 mm), or 4 in. (101.6 mm) inlet and ports; and can
accommodate piping/hose in 1.25 in. (31.8mm), 20 in. (50.8 mm), 2.5 in. (63.5 mm), or 4 in. (101.6 mm) connections.
All models can be mounted in a variety of positions. (Please refer to Installation section of manual.)
Equipment Arrival & Inspection
Inspect the blower system at time of receipt to ensure that all components and accessories, as noted on the packing slip, were
received and in good condition. Verify that the serial number on the packing slip matches the serial number shown on the blower
head nameplate. Inspect the blower and motor assembly to ensure that the motor horsepower and voltage are correct.
If any equipment was damaged in transit, you will need to make a claim against the freight carrier immediately.
If you have any shortages, discrepancies, or damage, please call your Republic Manufacturing Distributor or Republic
Manufacturing at (800) 847-0380.
No training required.
1. Notify all aected employees that a lockout or tagout is about to occur on a specic piece of equipment or machinery. The
authorized employee to use the lockout/tagout system shall know the type and magnitude of energy that the machine or
equipment utilizes and the hazards that exist with the energy source before preparing to shutdown.
2. If the machine or equipment is operating, please use normal stopping or rundown procedures for that machine.
3. Operate the switch, valve, or other energy isolating devices so that the equipment is isolated from its energy source. Isolating
the equipment from its energy source may involve turning o such items as the operating control, a line valve, or an electrical
circuit breaker.
4. Apply the lockout/tagout isolating device with assigned individual locks or tags.
5. Release any potentially-hazardous stored or residual energy. In order to do so, this may mean to return springs to a normal
position, or bleeding down. Since the machine must be in a zero energy state, if there is any chance the stored energy may
reaccumulate, verication of isolation must be continued until the servicing or maintenance is complete.
6. The machine or equipment is now locked out or tagged out.
Lockout/Tagout Procedures
Moving parts can crush and
cut.
Do not operate with guard
removed.
Lock-out/tagout before
servicing.
WARNING
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Storage Conditions
1. Must store blower in a place that meets the following conditions: clean, dry, and dust-free.
2. The temperature during storage must be between 32 (0 C) and 104 F (40 C).
Long Term Storage
The new blower may initially be stored following delivery.
1. Under advantageous storage conditions (as specified above): 1 year.
2. Under disadvantageous storage conditions (e.g. high humidity, salty air, sandy or dusty air): Inquire with Republic
Manufacturing regarding service at (800) 847-0380.
Commissioning After Longer Standstill:
Before recommissioning after a longer standstill, measure the insulation resistance of the drive motor. With values < 1k per volt
of nominal voltage, the winding is too dry.
Suitability & Environmental Conditions
The units are suitable for the use in the industrial field.
Use only clean, dry air. Do not use explosive gases or atmosphere that contains such gases.
The ambient and suction temperatures must be between 32 F (0 C) and 104 F (40 C). For temperatures outside this range
please contact your supplier.
In all applications where an unplanned shut down of the blower could possibly cause harm to persons or installations, a
corresponding safety backup system must be installed.
Protect all surrounding items from exhausted air. This exhausted air can be very hot.
Protect unit from contaminants and moisture. Air particles, water vapor, oil-based contaminants or other liquids must be
removed.
Blower must be installed with the proper-sized inlet and inline filter, gauge and relief valve to protect the blower from
contaminants and over-heating, overpressure.
When using the blower at a high altitude or high temperatures, please consult with Republic Manufacturing prior to use.
Space Required for Installation
1. Allow at least 3 inches (76.2 mm) of clearance for removal and venting at the fan guard.
2. Allow at least 2 inches (50.8 mm) of clearance around the face of the blower cover.
3. Please refer to the blower dimensional drawings on individual specification sheets to determine the appropriate machine
footprint.
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Intended Use
This operating manual
• is intended for regenerative blowers models HRC100-HRC1502 and 4RC210-4RC630.
• contains instructions regarding transport and handling, installation, commissioning, operation, shut-down, storage, services, and
disposal.
• must be completely read and understood by all operating and servicing personnel before beginning to work with or on the blowers.
• must be strictly observed.
• must be available at the site of operation.
e HRC100-1502 & 4RC210-630
• are blower-motor units for generating vacuum or pressure.
• are used to extract, pump and compress the following gases:
• Air.
• Non-ammable, non-aggressive, non-toxic and non-explosive gases or gas-air mixtures.
• With diering gases/gas-air mixtures, inquire with Republic Manufacturing.
• are equipped with one of the following kind of drive motors:
• 3-phase AC drive motor with a standard, or
• Single-phase AC drive motor.
ese operating instructions apply only to blower units with a standard design:
• are intended for industrial applications.
• are designed for continuous operation. With increased switch-on frequency (6x per hour with equal pauses and operating times)
or with increased gas inow and ambient temperature, the excess temperature limit of the coil and the bearing can be exceeded.
Consult Republic Manufacturing under such conditions.
e limits listed in “Technical Data” must always be complied with when operating Republic Regenerative Blowers.
Foreseeable Misuse
It is prohibited
• to use the HRC100-HRC1502 or 4RC210-4RC630 in applications other than industrial applications unless the necessary protection
is provided on the system, e.g. guards suitable for children’s ngers;
• to use the device in areas in which explosive gases can occur if the blower is not expressly intended for this purpose;
• to extract, to deliver and to compress explosive, ammable, corrosive or toxic uids, unless the blower is specically designed for
this purpose;
• to operate the blower with values other than those specied in “Technical Data”.
Any unauthorized modications of the blower are prohibited for safety reasons. e operator is only permitted to perform the
maintenance and service work described in these operating instructions. Maintenance and servicing work which goes beyond this may
only be carried out by companies which have been authorized by Republic Manufacturing.
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Technical Data
Blower Weight Noise Level
(dBa)
Blower Weight Noise Level
(dBa)
lb kg lb kg
HRC100 22 10 53 HRC102 33 15 68
HRC101 24 11 56 HRC202 33 15 61
HRC200 30 15 64 HRC202/1 35 16 61
HRC201 30 15 64 HRC302 40 18 60
HRC300 51 23 70 HRC302/1 38 17 60
HRC301 53 24 70 HRC402S 55 25 69
HRC400 57 26 70 HRC402 60 27 6
HRC401 57 26 70 HRC402/1 68 31 72
HRC500 68 31 72 HRC502 78 35 74
HRC501 66 30 74 HRC602 88 40 74
HRC600 79 36 72 HRC702 90 41 74
HRC700 88 40 72 HRC802 123 56 76
HRC750 112 51 74 HRC902 154 70 76
HRC800 137 62 82 HRC1002 163 74 76
HRC900 143 65 82 HRC1102 230 104 78
HRC1000 265 121 82 HRC1202 265 120 78
HRC1020 126 57 74 HRC1302 412 187 78
HRC1040 146 66 74 HRC1402 434 197 78
HRC1060 153 69 74 HRC1452 450 204 78
HRC1100 205 93 79 HRC1502 465 211 78
HRC1200 256 116 79
HRC1300 278 126 79
Blower Weight Noise Level
(dBa)
Blower Weight Noise Level
(dBa)
lb kg lb kg
4RC210-A75 40 20 62 4RC220-A75 67 34 62
4RC210-H16 36 18 62 4RC220-H26 53 27 62
4RC310-A71 40 20 62 4RC220-H56 67 34 62
4RC310-H16 36 18 62 4RC320-A75 79 36 63
4RC310-H26 36 18 62 4RC320-H46 71 32 63
4RC410-A41 57 26 62 4RC320-H56 75 34 63
4RC410-H16 57 26 62 4RC420-H26 82 37 66
4RC510-H16 64 29 68 4RC420-H56 95 43 66
4RC510-H26 70 32 68 4RC520-H26 100 45 70
4RC610-H16 80 36 71 4RC520-H77 126 57 71
4RC610-H26 86 39 71 4RC620-H36 106 48 71
4RC630-H67 188 86 76 4RC620-H57 144 65 72
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Tightening Torques for Screw Connections
The following values apply if no other information is available.
With non-electrical connections, property classes of 8.8 and 8 or higher as per ISO 898-1 are assumed.
Tightening torques for non-electrical connections
Thread [Nm] [ft lbs]
M4 2.7 - 3.3 1.99 - 4.44
M5 3.6 - 4.4 2.65 - 3.25
M6 7.2 - 8.8 5.31 - 6.5
M8 21.6 - 26.4 15.9 - 19.5
M10 37.8 - 46.2 27.9 - 34.1
M12 63.0 - 77.0 46.5 - 56.8
The following information for electrical connection applies to all terminal board connections with the exception of terminal strips.
Tightening torques for electrical connections
Thread [Nm] [ft lbs]
M4 0.8 - 1.2 0.59 - 0.89
M5 1.8 - 2.5 1.33 - 1.84
Especially for metal and plastic threaded cable glands and pipe unions, the following values apply:
Tightening torques for metal threaded glands/unions
Thread [Nm] [ft lbs]
M12x1.5 4 - 6 2.95 - 4.43
M 16x1.5 5 - 7.5 3.69 - 5.53
M25x1.5 6 - 9 4.43 - 6.64
M32x1.5 8 - 12 5.9 - 8.85
M40x1.5
Tightening torques for plastic threaded glands/unions
Thread [Nm] [ft lbs]
M12x1.5 2 - 3.5 1.48 - 2.58
M16x1.5 3 - 4 2.21 - 2.95
M25x1.5 4 - 5 2.95 - 3.69
M32x1.5 5 - 7 3.69 - 5.16
M40x1.5
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Installation
Blower may be lifted manually or utilizing lifting equipment based on the instructions below:
WARNING: Danger from lifting heavy loads. Manual handling of the unit is only permitted within the following limits:
• max. 66 lbs (30 kg) for men
• max. 22 lbs (10 kg) for women
• mas. 11 lbs (5 kg) for pregnant women
For the weight of the blower, see Mechanical Data section of this manual. All blowers heavier than the maximums stated above
must be lifted using lifting equipment.
1. The blower is ready to connect upon delivery.
2. Install the blower on a level, stable operating surface and use the optional isolation pads to reduce noise and vibration. Attach
the included loose muffler if necessary.
3. Have a qualified electrician configure the motor to your incoming voltage as noted in the“Motor Wiring”section of the
manual. Refer to the nameplate on the motor for the correct power supply requirements.
4. To ensure sufficient cooling of the blower, it is absolutely necessary that the required minimum distances to the fan guard and
the face of the blower cover be maintained. See “Mechanical Data”for minimum distances. Ventilation screens and openings
must remain clear. Discharge air of other units may not be directly sucked in again.
5. The blower is suitable for installation within the following ambient conditions: dusty or damp environment, in buildings,
in the open (though only if protected from intense sunlight exposure. The blower may be installed within the following
conditions: on level surfaces, and at a maximum elevation of 1000 ft. above sea level. (For higher altitudes, contact Republic
Manufacturing at 800-847-0380.)
6. Blower may be installed in any vertical/horizontal axis position with one exception: vertically with the blower face pointing
upward.
7. From the motor side of the blower, verify the blower is rotating in the direction indicated by the arrow on the motor. (The
motor side is marked with an arrow on most models.) Proper rotation can also be checked by the air flow at the inlet and
outlet ports. On blowers powered by a 3 phase motor, change the connection of any two (2) wires to reverse blower rotation if
needed.
Plumbing & Accessories
1. Remove any foreign material (e.g. burrs, chips, welding drops, pipe cuttings, excess sealant, etc.) from plumbing.
2. Verify the motor is securely mounted and proper blower rotation before connecting to plumbing. The inlet and outlet port are
not designed to support the plumbing without proper supporting elements.
3. Remove safety rubber plugs from the inlet and outlet ports.
4. Connect the plumbing with properly sized ttings.
5. Use a relief valve to discharge excess air beyond the preset level on pressure applications. Use a vacuum relief valve to draw in
excess air when preset vacuum level is achieved.
6. Install an intake lter to prevent foreign material from entering the blower. In applications where there is high humidity or
liquids being used in the process, install a moisture separator with a drain valve.
7. Install two (2) gauges - one before and one after the lter - to monitor dierential air ow through the lter element. As
lters become clogged, performance eciency will be reduced. Filters should be checked periodically and replaced when
necessary. The recommended check valves provide minimal pressure drop, positive sealing, and are resistant to the high
discharge temperatures of the blowers.
8. Recommended piping should be, at minimum, the same size as the inlet and outlet ports on pressure systems.
WARNING: Exhaust air temperature increases signicantly above 65”WC (162 mbar). Discharged air is typically too hot for
most plastic piping, therefore metal piping is recommended. This piping must be guarded and marked
“DANGERHOTDONOT TOUCH”.
9. Metal piping is recommended for the rst 5 ft. (1.5 m) to 8 ft. (2.4 m) from the blower on pressure systems. Elbows increase
friction, so elbows should be minimized to decrease friction loss.
10. Pressure or relief valves should be installed in a “T” that is at least one (1) pipe size larger than the port diameter.
HOT SURFACE
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Typical Pressure Layout
Typical Vacuum Layout
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800.847.0380 12
Electrical Connection
DANGER: Malpractice can result in severe injuries and material damage. The electrical connection may be performed by
trained and authorized electricians only. Before beginning work on the unit or system, the following measures must be carried
out:
• De-energize.
• Perform proper lockout/tagout procedures such that electricity cannot be turned on again.
• Conrm unit is de-energized.
• Ground and short-circuit.
• Cover or block-o adjacent energized parts
WARNING: Incorrect connection of the motor can lead to serious damage to the unit.
• ELECTRICAL POWER SUPPLY: Observe the rating plate. It is imperative that the operating conditions correspond to the data
given on the rating plate. Deviations permissible without reduction in performance include:
• +/- 5% voltage deviation
• +/- 2% frequency deviation
• CONNECTION TO TERMINAL BOX: Open the required cable entry openings on the terminal box. Here the following two cases
are differentiated:
• The cable entry opening is prefabricated and provided with a sealing plug.
• Screw out sealing plug.
OR
• The cable entry opening is closed off with a casting skin (only on blower with drive-motor axis heights of 100” [2.5 m]
to 160”[4.0 m] in standard design).
• Break out casting skin using a suitable tool. For example, use a metal pin with a corresponding diameter or a chisel
and hammer.
• Mount cable glands on the terminal box. Proceed as follows:
• Select one cable gland in each case which is suitable for the cable diameter.
• Insert this cable gland in the opening of the terminal box. Use a reducer if necessary.
• Screw on the cable gland so that no moisture, dirt, etc. can penetrate into the terminal box.
• Carry out the connection and arrangement of the jumpers in accordance with the wiring diagram in the terminal box or
“Wiring Diagram” section of this manual.
• The electrical connection must be carried out as follows:
• The electrical connection must be permanently safe.
• DANGER: The terminal box must be free from foreign bodies, dirt, and humidity. Terminal box cover and cable
entries must be tightly closed so as to make them dust-proof and waterproof. Check for tightness at regular intervals.
• DANGER: There may be no protruding wire ends.
• DANGER: Clearance between bare live parts and between bare live parts and ground : > 0.22 in. (5.5 mm) at a
nominal voltage of UN< 690 V.
• For the tightening torques for terminal board connections (except terminal strips), see “Tightening Torques for Screw
Connections”.
• For motor overload protection, use motor circuit breakers and adjust to the specified nominal current as listed on the rating
plate.
• DANGER: There is danger of an electrical shock when a defective blower is touched. Mount motor circuit breaker. Have
electrical equipment checked regularly by an electrician.
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Wiring Diagram - Single Phase
Republic’s single phase regenerative blowers use the wiring diagram shown below, but always check the wiring diagram on the
inside of the terminal box cover and follow what is shown there. Special versions may exist.
Wiring Diagram - Three Phase
Republic three phase regenerative blowers use either the 6 wire or 12 wire diagram shown below. Always check the wiring
diagram on the inside of the motor's terminal box cover and follow what is shown there. Special versions may exist.
For 12 wire motors, look at the blower data tag located at the top of the motor. Each combination of hertz and voltage has a
symbol next to it indicating which diagram should be followed for that configuration. Match the symbol next to hertz and
voltage to the symbols above the 12 wire motor diagrams. For all configurations, check rotation once the motor is wired. If
rotation is reversed, swap any two leads.
U3 U2
U1 U4
Z4 Z2
Z3
1/2CA1 Z1/2CA2
U3 U2
U1 U4
Z4 Z2
Z3
1/2CA1 Z1/2CA2
L1 N1CA2
NL1 1CA2
2TB1
2TB2
& >
P1
P2
U4
T4
U3
T3
U2
T2
U1
T1
DISCONNECTION
Z3Z4Z1Z2 T7T8T5T6
M
1 -
1CA1 2CA2
2CA11CA2
C B C B
LOW VOLTAGE 115 V HIGH VOLTAGE 230V
Thermal Leads
Republic regenerative blowers include two small black wires coming from the motor that are not connected to the terminal
block. These wires are for motor over temperature protection if provisions are made in the control panel. If no provision is
available, simply cap off these wires and do not use them.
12 Wire Motors - IE3 6 Wire Motors - IE1
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Commissioning
WARNING: Improper use of the unit can result in serious or even fatal injuries. Do not proceed without reading Safety
Instructions.
WARNING: Danger from rotating parts cutting/cutting o of extremities, grasping/winding up of hair and clothing.
WARNING: Danger due to vacuum and pressure, sudden escape of vapor (skin and eye injuries), sudden drawing in of hair and
clothing, or burns.
Only start-up and operate under the following conditions:
• The blower must be completely assembled. Pay particular attention to the following components:
• the blower cover,
• the muer on inlet and discharge connections, and
• the fan guard.
• The pipes/hoses must be connected to inlet and discharge connections.
• Inlet and discharge connections and the connected pipes/hoses may not be closed, clogged or soiled.
• Check the mounting elements, connections of the pipe/hose, lines, ttings and containers for strength, leaks and rm seating
at regular intervals.
Preparation
DANGER: Blower can overheat causing damage to the drive motor winding if intake or discharge connections are closed/soiled.
Before start-up, make sure the inlet and discharge connections are not closed, clogged or soiled.
CAUTION: Before starting up after a longer standstill: Measure the insulation resistance of the motor. With values < 1 k per volt
of nominal voltage, the winding is too dry.
1. Check the direction of the rotation. The intended rotating direction of the shaft is marked with arrows on the housing.
2. The gas delivery direction is marked with arrows on the inlet and discharge connections.
3. Make sure the pipes/hoses on the inlet and discharge connections are properly connected.
4. Switch the blower on briey and then o again.
5. Compare the actual rotating direction of the external fan with the intended shaft rotating direction indicated with the arrows
shortly before the blower comes to a standstill.
6. If necessary, revers the direction of the rotation of the motor.
7. Observe the operating speed specied on the rating plate. This may not be exceeded, as otherwise the noise radiation,
vibration behavior, grease consumption duration and bearing change interval worsen. To prevent damage as a result of
higher speeds, it may be necessary to inquire with Republic Manufacturing as to the maximum speed.
Start-Up
1. Open shut-o device in intake/discharge pipe.
2. Switch on power supply for drive motor.
3. Operate blower for an hour, and then check:
• Ambient temperature - increased room temperatures may require stronger ventilation especially for larger blowers.
Room temperature should not exceed 104 (40oC).
• Pressure and vacuum valves - adjust relief valve pressure or vacuum setting if needed.
• Motor current - check that current supply matches recommended current rating on blower nameplate.
• Electrical overload cutout - check that current matches rating on blower nameplate
If motor fails to start or slows down signicantly under load, shut o and disconnect from power supply. Check that the voltage is
correct for the motor and that the motor is turning in the proper direction.
Shut-Down
1. Switch o power supply for drive motor.
2. Close shut-o device in intake/discharge pipe, if applicable.
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Operation
WARNING: Improper use of the unit can result in serious or even fatal injuries. Do not proceed without reading Safety
Instructions.
WARNING: Danger due to vacuum and pressure, sudden escape of vapors (skin and eye injuries), sudden drawing in of hair and
clothing.
WARNING: Danger of overheating due to hot surface of blower. High temperatures of up to approximately 320oF (160oC) can
occur on the surface of the blower. Do not touch during operation. Allow to cool after shut-down.
CAUTION: Danger of overheating due to hot surface of blower. Temperature sensitive parts, such as lines or electronic
components, may not come into contact with the surface of the blower.
CAUTION: Danger of rusting due to collection of condensed water in drive motor area. On drive motors with closed condensed
water openings, remove closures occasionally to allow any water which has collected to drain o.
CAUTION: Danger of bearing damage. Heavy mechanical impacts must be avoided during operating and while at standstill.
Shut-Down & Longer Standstills
Preparing for shut-down or longer standstill
WARNING: Improper use of the unit can result in serious or even fatal injuries. Do not proceed without reading“Safety
Instructions”.
CAUTION: Danger of rusting due to collection of condensed water in drive motor area. On drive motors with closed condensed
water openings, remove closures occasionally to allow any water which has collected to drain o.
CAUTION: Danger of bearing damage. Heavy mechanical impacts must be avoided during operating and while at standstill.
Prior to shut-down or longer standstill, proceed as follows:
1. Switch o the blower.
2. Close shut-o device in inlet and pressure line if installed.
3. Disconnect blower from power supply.
4. Release pressure. Open pipes/hoses slowly and carefully so that the vacuum or gauge pressure in the blower can be released.
5. Remove pipes/hoses.
6. Provide muers on inlet and discharge side with sealing plugs.
Servicing
WARNING: Improper use of the unit can result in serious or even fatal injuries. Do not proceed without reading“Safety
Instructions”.
Emptying/Rinsing/Cleaning
Before any maintenance/servicing work, empty, rinse and clean the outside of the unit.
1. Empty unit with air and rinse until all residues have been removed.
2. Clean the outside of the unit with compressed air.
• Wear gloves and protective safety glasses.
• Secure the surrounding area.
• Clean the entire surface of the unit and exterior fan with compressed air.
Preventative Maintenance
After the rst 100 hours of operation, the following need to be checked:
• lter elements;
• noise absorbing foam in muers; and
• motor and blower cleanliness.
Replace lter elements as needed. Muers should be checked on a monthly basis.
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Troubleshooting
Problem Reason Remedy
Increased sound Noise absorbing foam is damaged Replace foam.
Impeller rubbing inside Send unit to Republic Authorized Repair
Facility.
Excessive vibration Damaged impeller Replace impeller.
Motor and/or impeller are dirty Clean motor and impeller periodically.
Ambient and exhaust temperature
increases
Motor and/or blower are dirty Clean motor and blower periodically.
Filters are dirty Replace lters.
Decreased inlet air pressure Inlet air lter is clogged Clean inlet lter or replace cartridge.
Unit is very hot Wrong wiring Check wiring.
Low voltage Supply proper voltage.
Inlet air lter is clogged Clean inlet lter.
Motor and/or blower are dirty Replace cartridge.
Operating pressure or vacuum is too
high
Clean motor and blower periodically.
Install a relief valve and pressure or
vacuum gauge.
Unusual sound Impeller is damaged or dirty Clean or replace impeller.
Bearing failure Send unit to Republic Authorized Repair
Facility.
Flow speed is too high Clean pipes. Use pipe with larger cross-
section if necessary.
Muer is dirty Clean or replace muer inserts.
Motor overload Low voltage Check power source.
Check wire size and wire connections.
Unit does not start Incorrect electrical connection or power
source
Check wiring diagram, circuit fusing and
circuit capacity.
Impeller is damaged Clean or replace impeller.
Install proper ltration.
Blower does not generate any or
generates insucient pressure dierence
Leak in system Seal leak in system.
Wrong direction of rotation Reverse direction of rotation by
interchanging two connecting leads.
Incorrect frequency Correct frequency.
Shaft seal defective Replace shaft seal.
Dierent density of pumped gas Take conversion of pressure values
into account. Inquire with Republic
Manufacturing.
Impeller is damaged Clean or replace impeller.
Blower leaking Seals on muer are defective Check muer seals and replace if
necessary.
Seals in motor area are defective Check motor seals and replace if
necessary.
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17
In the Event of a Breakdown
1. Use a lockout/tagout procedure to ensure the blower may be worked on safely.
2. Refer to the“Troubleshooting” section of the manual to determine the cause of the breakdown and the appropriate action to
take.
3. If further assistance is needed, please call Republic Manufacturing at 800-847-0380.
When to Ship the Blower Back to Republic
If you cannot x or troubleshoot your blower system using this manual then a skilled Republic Manufacturing professional is
required. Please ship your blower back to Republic Manufacturing.
Disabling, Dismantling, and Scrapping of Blower
1. Disable the blower using the lockout/tagout procedure outlined in the manual.
2. Scrap entire unit using a suitable disposal company.
3. Most components are aluminum, stainless steel, or zinc-plated mild steel and may be recycled or disposed of as such.
Warranty Terms and Conditions
Republic Manufacturing warrants all nished Republic Manufacturing products to be free from functional defects in material
and workmanship for a period of twelve (12) months from the date of installation, or no longer than eighteen (18) months from
shipment.
Wear parts such as lter elements, hoses and piping are not covered by the 12 to 18 month warranty.
DISASSEMBLY OF BLOWER MAY VOID WARRANTY.
To obtain service within the warranty period, rst contact your authorized Republic Manufacturing dealer or Republic
Manufacturing Service Department. Republic’s responsibility under this warranty shall be to provide an analysis of the blower,
which will determine course of action. Any product found to be defective within the warranty period will merit either:
a. A no charge repair of existing blower. Any freight charges will be the purchaser’s responsibility.
b. A replacement blower*. Any freight charges will be the purchaser’s responsibility.
*This option would be a chargeable replacement until the original blower is received by Republic Manufacturing, and warranty is
approved.
Republic Manufacturing shall not be liable for incidental nor consequential damages resulting from the use of this product. There
are no expressed nor implied warranties, which extend beyond the warranty of merchantability or tness for a particular purpose
to the equipment and/or its parts and components.
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EXPLODED VIEW
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19
Position No. Description
001 Screw
002 Screw
003 Front Cover
004 Screw
005 Spring lock washer
006 Washer
007 Front bearing
008 Bearing cover
009 O-Ring
010 Impeller
011 Washer
012 Screw
013 Housing
014 Lift eye bolt
015 Shaft lip seal
016 Screw
017 Motor box cover
018 Motor box gasket
019 Key
020 Motor
021 Rotor
022 Rear bearing
023 Washer
024 Motor cover
025 Screw
026 External fan
027 Retaining ring
028 Screw
029 Fan cowl
030 Gasket
031 Silencer insert
032 Silencer inlet lter
033 Silencer housing
034 Screw
035 Pin
036 Nut
037 Base
038 Lock washer
039 Screw
040 Washer
041 Lock washer
042 Screw
REGENERATIVE BLOWER PARTS LIST
Created 20170131 ©2017 Republic Manufacturing
Air Knife Systems Centrifugal Blowers Regenerative Blowers Vacuum Pumps
5131 Cash Road, Dallas, TX 75247 | 800.847.0380 | republic-mfg.com
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