Gardner Denver HELIFLOW 8 Series User manual

HF-7-604 Page 1
PD BLOWERS & VACUUM PUMPS
HELIFLOW INDUSTRIAL SERIES |8” GEAR DIAMETER
Owner’s Manual
8” HELIFLOW
HF-7-604
Version 01
March 15, 2018

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MAINTAIN BLOWER RELIABILITY AND PERFORMANCE
WITH GENUINE GARDNER DENVER PARTS AND SUPPORT SERVICES
Factory genuine parts, manufactured to design tolerances, are developed for optimum dependability - - -
specifically for your blower. Design and material innovations are born from years of experience with
hundreds of different blower applications. When you specify factory genuine parts you are assured of
receiving parts that incorporate the most current design advancements manufactured in our state-of-the-
art blower factory under exacting quality standards.
Your AUTHORIZED DISTRIBUTOR offers all the backup you require. A worldwide network of authorized
distributors provides the finest product support in the blower industry.
Your AUTHORIZED DISTRIBUTOR can support your blower investment with these services:
1. Trained parts technical representatives to assist you in selecting the correct replacement
parts.
2. Complete inventory of new machines and new, genuine factory parts.
3. A full line of factory tested AEON™ PD Series blower lubricants specifically formulated for
optimum performance in all blowers.
4. Authorized distributor service technicians are factory-trained and skilled in blower
maintenance and repair. They are ready to respond and assist you by providing fast, expert
maintenance and repair service.
INSTRUCTIONS FOR DETERMINING BLOWER CONFIGURATION
1. Face the blower drive shaft.
2. In a VERTICAL configuration, air flow is horizontal.
3. In
a HORIZONTAL configuration, air flow is vertical.
4. In a vertical configuration, a BOTTOM HAND exists when the drive shaft is below the
horizontal center line of the blower. A TOP HAND exists when the drive shaft is above the
horizontal center line of the blower.
5. In a horizontal configuration, a RIGHT HAND exists when the drive shaft is to the right of the
vertical center line of the blower. A LEFT HAND exists when the drive shaft is to the left of
the vertical center line of the blower.
INSTRUCTIONS FOR ORDERING REPAIR PARTS
For pricing, and ordering information contact your nearest AUTHORIZED FACTORY DISTRIBUTOR.
When ordering parts, specify Blower MODEL and SERIAL NUMBER (see nameplate on unit).
Rely upon the knowledge and experience of you AUTHORIZED DISTRIBUTOR and let them assist you in
making the proper parts selection for your blower.
For the location of your local authorized Gardner Denver blower distributor refer to the yellow
pages of your phone directory, check the Web site at www.gardnerdenverproducts.com or
contact:
Gardner Denver Incorporated
1800 Gardner Expressway
Quincy, IL 62305
Phone: [phone]
Fax: [phone]

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FOREWORD
Gardner Denverblowers are the result of advanced engineering and skilled manufacturing. To be
assured of receiving maximum service from this machine, the owner must exercise care in its operation
and maintenance. This book is written to give the operator and maintenance department essential
information for day-to-day operation, maintenance and adjustment. Careful adherence to these
instructions will result in economical operation and minimum downtime.
Danger is used to indicate the presence of a hazard which will cause severe personal injury,
death, or substantial property damage if the warning is ignored.
Warning is used to indicate the presence of a hazard which can cause severe personal injury,
death, or substantial property damage if the warning is ignored.
Caution is used to indicate the presence of a hazard which will or can cause minor personal
injury or property damage if the warning is ignored.
NOTICE
Notice is used to notify people of installation, operation or maintenance information which is
important but not hazard-related.

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SAFETY PRECAUTIONS
Safety is everybody’s business and is based on your use of good common sense. All situations or
circumstances cannot always be predicted and covered by established rules. Therefore, use your past
experience, watch out for safety hazards and be cautious. Some general safety precautions are given
below:
Failure to observe these notices could result in injury to or death of personnel.
Keep fingers and clothing away from blower inlet and discharge ports, revolving belts,
sheaves, drive coupling, etc.
Do not use the air discharge from this unit for breathing – not suitable for human
consumption.
Do not loosen or remove the oil filler plug, drain plugs, covers, or break any
connections, etc., in the blower air or oil system until the unit is shut down and the air
pressure has been relieved.
Electrical shock can and may be fatal.
Blower unit must be grounded in accordance with the National Electrical Code. A
ground jumper equal to the size of the equipment ground conductor must be used to
connect the blower motor base to the unit base.
Open main disconnect switch, tag and lockout before working on the control.
Disconnect the blower from its power source, tag and lockout before working on the
unit – this machine is automatically controlled and may start at any time.
Failure to observe these notices could result in damage to equipment.
Stop the unit if any repairs or adjustments on or around the blower are required.
Disconnect the blower from its power source, tag and lockout before working on the
unit – this machine is automatically controlled and may start at any time.
Do not exceed the rated maximum speed values shown on the nameplate.
Do not operate unit if safety devices are not operating properly. Check periodically.
Never bypass safety devices.
Ensure proper rotation of blower prior to start-up. Failure to do so may result in damage
to the blower.

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TABLE OF CONTENTS
MAINTAIN BLOWER RELIABILITY AND PERFORMANCE ........................................................................ 1
INSTRUCTIONS FOR DETERMINING BLOWER CONFIGURATION ........................................................ 1
INSTRUCTIONS FOR ORDERING REPAIR PARTS .................................................................................. 1
FOREWORD................................................................................................................................................. 2
SAFETY PRECAUTIONS ............................................................................................................................. 3
MATRIX/MENU ............................................................................................................................................. 7
INTRODUCTION YOUR KEY TO TROUBLE FREE SERVICE ................................................................... 8
SECTION 1, Equipment Check..................................................................................................................... 9
SECTION 2, Installation .............................................................................................................................. 11
SECTION 3, MAINTENANCE..................................................................................................................... 20
GARDNER DENVER LUBRICANT ORDER INFORMATION .................................................................... 21
SECTION 4, OPERATION .......................................................................................................................... 24
SECTION 5, SPECIAL TOOL REQUIRED ................................................................................................. 27
SECTION 6, DISASSEMBLY INSTRUCTIONS.......................................................................................... 28
SECTION 7, ASSEMBLY INSTRUCTIONS................................................................................................ 33
SECTION 8, PARTS LIST........................................................................................................................... 50
WARRANTY................................................................................................................................................ 56

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Index
AIR FILTERS AND FILTER SILENCERS........23
ASSEMBLY INSTRUCTIONS, SECTION 7
ASSEMBLY INSTRUCTIONS ......................33
BLOWER STARTUP CHECKLIST ..................25
DISASSEMBLY INSTRUCTIONS, SECTION 6
DISASSEMBLY INSTRUCTIONS ................28
EQUIPMENT CHECK, SECTION 1
EQUIPMENT CHECK.....................................9
FILLING PROCEDURE....................................20
FOUNDATIONS ...............................................11
INSTALLATION, SECTION 2
INSTALLAION ..............................................11
INTRODUCTION YOUR KEY TO TROUBLE
FREE SERVICE .............................................8
LIMITATIONS...................................................24
LOCATION.......................................................11
LUBRICATION SERVICE................................ 20
MAINTENANCE, SECTION 3.......................... 20
MATRIX/MENU.................................................. 7
OPERATION, SECTION 4
OPERATION ................................................ 24
PARTS LIST, SECTION 8
PARTS LIST................................................. 50
PIPING............................................................. 19
REMOVING PROTECTIVE MATERIALS........ 10
Safety Precautions............................................. 3
SAFETY PRECAUTIONS................................ 26
SPECIAL TOOL REQUIRED, SECTION 5
SPECIAL TOOL REQUIRED ....................... 27
STORAGE ......................................................... 9
TROUBLE SHOOTING.................................... 26
Warranty .......................................................... 56

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LIST OF ILLUSTRATION
Figure 2- 1 – HF 825 VERTICAL BLOWER MOUNTING CONFIGURATIONS AND OUTLINE................ 12
Figure 2- 2 – HF 825 HORIZONTAL BLOWER MOUNTING CONFIGURATIONS AND OUTLINE ..........13
Figure 2- 3 – HF-817 VERTICAL BLOWER MOUNTING CONFIGURATIONSAND OUTLINE ................ 14
Figure 2- 4 – HF-817 HORIZONTAL BLOWER MOUNTING CONFIGURATIONSAND OUTLINE........... 15
Figure 2- 5 – BELT DRIVE OVERHUNG LOAD CALCULATIONS ............................................................................18
FIGURE 3-1 - LUBRICATION..................................................................................................................... 20
FIGURE 3-2 – APPROXIMATE OIL CAPACITIES (PINTS)....................................................................... 20
FIGURE 3-3 – SYNTHATIC LUBRICATION CHART .................................................................................22
FIGURE 4-1 – MAXIMUM OPERATING LIMITATIONS............................................................................. 24

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GARDNER DENVER HELIFLOW INDUSTRIAL
MATRIX/MENU
NOTICE TO CUSTOMER – To find the construction options for
Your blower unit, FILL IN THE BALANCE OF LETTERS OR H Y G A A
NUMBERS FROM YOUR UNIT NAMEPLATE ___ ___ ___ ___ ___ ___ ___
COLUMN NUMBER: 1 2 3 4 5 6 7
FOLLOW THE LINE DOWN AND OVER FROM EACH SPACE THUS FILLED
IN TO FIND THE APPROPRIATE CONSTRUCTION OPTION WITH WHICH
YOUR MACHINE IS EQUIPPED.
COLUMN 1 – BASIC DESIGNATOR
COLUMN 2 – PRODUCT FAMILY
COLUMN 3 – GEAR DIAMETER
A. F.
B. G. 8”
C. H.
E.
COLUMN 4 – CASE LENGTH
L- HF 825
M-HF 817
COLUMN 5 – CONFIGURATION
E. Std Blower – Vertical-Bottom Hand-Right Discharged Timed, CCW
F. Std Blower – Vertical-Bottom Hand-Left Discharge Timed, CW
G. Std Blower – Vertical-Top Hand-Right Discharge Timed, CW
H. Std Blower – Vertical-Top Hand-Left Discharge Timed, CCW
J. Std Blower – Horizontal-Right Hand-Bottom Discharge Timed CW
K. Std Blower – Horizontal-Right Hand-Top Discharge Timed CCW
L. Std Blower – Horizontal-Left Hand-Top Discharge Timed CW
M. Std Blower – Horizontal-Left Hand-Bottom Discharge Timed CCW
COLUMN 6 – DESIGN VERSION
COLUMN 7 – ADDITIONAL DESCRIPTION
A. Lip
Seal

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INTRODUCTION
YOUR KEY TO TROUBLE FREE SERVICE
Thank you for investing in Gardner Denver quality. The Gardner Denver reputation for rugged
dependability has been earned by over 50 years of service in demanding, industrial operations where
downtime cannot be tolerated and efficient blower performance is expected.
Your Gardner Denver blower is a precision engineered blower that has been carefully manufactured and
thoroughly tested at the state-of the-art Gardner Denver Blower Factory in Sedalia, Missouri.
As with other precision machinery, there are several relatively simple installation, operation and
maintenance procedures that you must observe to assure optimum blower performance. There is no
guesswork in the manufacture of your highly advanced Gardner Denver blower and there must be none in
preparing the blower to get the job done in the field.
The purpose of this manual is to help you properly install, operate and maintain your Gardner Denver
blower. It is essential that you review all sections of this manual in preparation for installing your blower.
Follow the instructions carefully and you will be rewarded with trouble-free Gardner Denver service… year
in and year out.
IMPORTANT GARDNER DENVER TELEPHONE NUMBERS
YOUR AUTHORIZED GARDNER DENVER DISTRIBUTION
NAME: ____________________________
TELEPHONE: ____________________________
FAX: ____________________________
CONTACT: ____________________________
THANKS…FOR THE PRIVILEGE OF SERVING YOU WITH DEPENDABLE GARDNER DENVER
QUALITY.

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SECTION 1
EQUIPMENT CHECK
Before uncrating, check the packing slip carefully to be sure all the parts have been received. All
accessories are listed as separate items on the packing slip, and small important accessories such as
relief valves can be overlooked or lost. After every item on the packing slip has been checked off,
uncrate carefully. Register a claim with the carrier for lost or damaged equipment.
Customers are cautioned to provide adequate protection, warning and safety equipment
necessary to protect personnel against hazards involved in installation and operation of this
equipment in the system or facility.
STORAGE
Your Gardner Denver Blower was packaged at the factory with adequate protection to permit normal
storage for up to six (6) months.
If the unit is to be stored under adverse conditions or for extended periods of time, the following additional
measures should be taken to prevent damage.
1. Store the blower in a clean, dry, heated (if possible) area.
2. Make certain inlet and discharge air ports are tightly covered to prevent foreign material from
entering the air box.
3. All exposed, non-painted surfaces should be protected against rust and corrosion.
4. Provide adequate protection to avoid accidental mechanical damage.
5. In high humidity or corrosive environments, additional measures may be required to prevent
rusting of the blower internal surfaces.
6. To prevent rusting of gears, bearings, etc., the oil reservoirs may be filled with normal
operating oil.
Before running the blower, drain the oil and replace to the proper operating level with clean,
fresh lubricant.
7. Rotate the blower shaft (10 to 25 turns) monthly during storage. Inspect the blower shaft
(near the shaft seal area) monthly and spray with rust inhibitor if needed.
8. For long term storage (over six (6) months), contact Gardner Denver Customer Service for
recommendations.

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REMOVING PROTECTIVE MATERIALS
The shaft extension is protected with rust inhibitor which can be removed with any standard solvent.
Follow the safety directions of the solvent manufacturer.
Blower inlet and outlet are temporarily capped to keep out dirt and other contaminants during shipment.
These covers must be removed before start-up.
The internal surfaces of all HeliFlow blowers are mist sprayed with a rust preventative to protect the
machine during shipment. Remove this film upon initial startup, using any commercial safety solvent.
Position the blower so that the inlet and discharge connections are in the vertical position (vertical
airflow). On vertically mounted units, it will be necessary to lay the unit on its side supporting the ends of
the unit so as not to restrict the portion on the bottom side. Place a shallow pan on the under side of the
unit. With the blower disconnected from power, spray the solvent in the top port, rotating the impellers by
spinning the shaft manually. Continue this procedure until the unit is visibly clean.
Rotating components will cause severe injury in case of personal contact. Keep hands away
from blower inlet and discharge ports.

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SECTION 2
INSTALLATION
LIFTING
The basic blower is supplied with lifting lugs at each top corner of the unit. Attach lifting equipment only to
the lifting lugs.
LOCATION
Install the blower in well lit, clean and dry place with plenty of room for inspection and maintenance.
FOUNDATION
For permanent installations we recommend concrete foundations be provided, and the equipment should
be grouted to the concrete. It is necessary that a suitable base be used, such as a steel combination
base under blower and motor, or a separate sole plate under each. Before grouting, equipment must be
leveled, free of all strains, and anchored so no movement will occur during setting of grout. After grout
has completely hardened, a recheck is necessary to compensate for shrinkage, etc. If required, add
shims under blower feet after final tightening of foundation anchor bolts to remove strain from the blower
housing. Where jack screws or wedges are used during grouting, they must be backed off or removed
before final tightening of anchor bolts.
Where a concrete foundation is not feasible, care must be taken to insure that equipment is firmly
anchored to adequate structural members.
MOUNTING COFIGURATIONS
The blower flex-mounting design enables horizontal and vertical mounting configurations with top or
bottom hand, right or left hand shaft positioning. The units are discharge timed allowing rotation in only
one direction (refer to Figure 2-1, page 12 and Figure 2-2, page 13). If converting a blower from vertical
bottom hand drive to vertical top hand drive or vice versa, the oil slinger on each end must be moved to
the lower rotor.

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Figure 2- 1 – HF 825 VERTICAL BLOWER MOUNTING CONFIGURATIONS AND OUTLINE
302HYG800‐B
(Ref.Drawing)

HF-7-602 Page 13
Figure 2- 2 – HF 825 HORIZONTAL BLOWER MOUNTING CONFIGURATIONS AND OUTLINE
303HYG800‐B
(Ref.Drawing)

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Figure 2- 3 –HF 817 VERTICAL BLOWER MOUNTING CONFIGURATIONS AND OUTLINE
304HYG800‐B
(Ref.Drawing)

HF-7-602 Page 15
Figure 2- 4 –HF 817 HORIZONTAL BLOWER MOUNTING CONFIGURATIONS AND OUTLINE
305HYG800‐B
(Ref.Drawing)

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NOTICE
When changing mounting configuration, it will be necessary to reposition oil level gauge (H),
and drain plug (A).
For Vertical Models, the oil slinger must be on the lower rotor or blower failure is immediate.
The rotation direction must correspond to the direction of the arrows located on the machine
body. Permitted speed ranges of the blower 1000-2500 RPM.
NOTICE
In any case, the rotation speed must be monitored after assembly of the Blower.
Axial thrust from the drive must not be transferred to the rotor shaft.
DRIVE INSTALLATION
When selecting a V-belt drive, check to be sure the shaft overhung load limitation is not exceeded.
Belt drives must be carefully aligned. Motor and blower pulleys must be parallel to each other and in the
same plane within 1/32 inch. Belt tension should be carefully adjusted to the belt manufacturer’s
recommendation using a belt tension gauge. Check tension frequently during the first day of operation.
Overtightening belts leads to heavy bearing loads and premature failure.

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On the direct connected units, alignment and lubrication of couplings to specifications of the coupling
manufacturer is very important. When mounted drives are supplied from the factory, proper alignment
has been established before shipment. However, during shipping, handling and installation, it is likely
that the alignment has been disturbed and final adjustment must be made before startup.
Exceeding overhung load limitations leads to unwarrantable premature bearing failure and shaft
breakage.
The location of the sheave on the blower shaft greatly affects the stress in the shaft. The optimum blower
sheave positioning is as close as possible to the blower drive cover, not to exceed dimension “C” in Drive
Shaft Illustration, (Figure 2- 5).
The calculated shaft moment must not exceed the maximum allowable moment listed in Maximum
Allowable Moment Chart, (Figure 2- 5). If the calculated shaft moment exceeds the maximum allowable
moment:
•Increase Sheave Diameters to Reduce Belt Pull
•Use Jackshaft Drive
•Use Direct Coupled or Gearbox Drive
To calculate shaft moment for a given V-Belt Drive Arrangement:
1. Use the formula for Calculation of Belt Pull, (Figure 2- 5) to calculate belt pull.
2. Insert the calculated belt pull into the formula for Calculation of Shaft Moment,
(Figure 2- 5), to arrive at the calculated shaft moment.

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Gear
Diameter
(Inches)
Dimensions
(Inches)
Maximum
Allowable
Moment
(LB-IN)
A B C
(Max)
8 8.44 3.86 0.50 19500
MAXIMUM ALLOWABLE MOMENT
DRIVE SHAFT ILLUSTRATION
Z Ac Z Ac Z Ac Z Ac Z Ac Z Ac
0.000 1.000 0.250 0.966 0.500 0.926 0.750 0.879 1.000 0.823 1.250 0.751
0.025 0.997 0.275 0.962 0.525 0.922 0.775 0.874 1.025 0.816 1.275 0.742
0.050 0.994 0.300 0.958 0.550 0.917 0.800 0.869 1.050 0.810 1.300 0.734
0.075 0.990 0.325 0.954 0.575 0.913 0.825 0.864 1.075 0.803 1.325 0.725
0.100 0.987 0.350 0.951 0.600 0.908 0.850 0.858 1.100 0.796 1.350 0.716
0.125 0.983 0.375 0.947 0.625 0.904 0.875 0.852 1.125 0.789 1.375 0.706
0.150 0.980 0.400 0.943 0.650 0.899 0.900 0.847 1.150 0.782 1.400 0.697
0.175 0.977 0.425 0.939 0.675 0.894 0.925 0.841 1.175 0.774 1.425 0.687
0.200 0.973 0.450 0.935 0.700 0.889 0.950 0.835 1.200 0.767
0.225 0.969 0.475 0.930 0.725 0.884 0.975 0.829 1.225 0.759
ARC OF CONTACT FACTORS
Belt Pull = 2.5 – Ac 125954 x Hp x S.F.
Ac D x RPM
Key: Ac = Arc of Contact Factor (Refer to Arc of Contact Factor Chart above)
Hp = Blower Horsepower for Operating Conditions
S.F. = Actual Drive Service Factor
D = Blower Sheave Pitch Diameter in Inches
RPM = Blower Sheave Speed
Z = Large Sheave Pitch Diameter (in) – Small Sheave Pitch Diameter (in)
Sheave Center Distance (in)
CALCULATION OF BELT PULL
Shaft Moment (LB-IN) = Belt Pull x B + C + Sheave Width
2
CALCULATION OF SHAFT MOMENT
Figure 2- 5 – BELT DRIVE OVERHUNG LOAD CALCULATIONS

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PIPING
Inlet and discharge connections on all blowers are large enough to handle maximum volume with
minimum friction loss. Reducing the pipe diameter on either inlet or discharge will only create additional
line loss and increase the overall pressure differential.
Excessive weight of piping and fittings will cause internal misalignment and premature wear. Never allow
the blower to carry the weight of the pipe. If possible, a spool or sleeve-type expansion joint should be
installed between the unit and the piping. Where a flexible connection is not practical, the weight of the
rigid connection must be separately supported. All system piping must be cleaned internally before
connecting to the blower.
The suction pipe must be of a sufficient size, otherwise machine will be overloaded.
The suction pipe must incline downwards from the machine to prevent condensate from entering and
drain plug must be fitted at the lowest point. For adherence to the acceptable operating vacuum, the
vacuum gauge should be installed in the suction pipe directly in front of the suction port.
Vacuum relief valve is absolutely essential. Relief valve should be installed as close as possible to the
inlet port of the blower.