BLACKMER V Series Manual

BLACKMER GEAR PUMP
960702
INSTRUCTIONS NO. 1903-a00
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
MODELS: V-SERIES
Section
Effective
Replaces
1903
October 2022
September 2022
V Series
Internal Gear Pumps
1903-a00
Where InnovationFlows

Always read the most current version of this manual before performing any work on or around this pump.
The most current version of this manual is freely available on the web at www. blackmer.com
Blackmer pumps are specifically configured for your unique application conditions. Those application
conditions and the details of the pump configuration were documented during the ordering process. Keep
that information available in a safe place, as it may be needed when troubleshooting pump problems or
when ordering spare parts or repairs.
Blackmer Gear Pumps are covered by one or more of the following patents: U.S. Patent Nos. 7549205,
7137793, 7183683, 8,608,465B2 Australian Patent No. AU2005233534B2; Korean Patent No. 10-2006-
7023162; Mexican Patent No. PA/2006/011436, Russian Patent No. 2006138540(041952); China Patent
No. ZL 201280031563.6; and other patents pending.

1903-a00
Table of Contents
SECTION 1 CAUTIONS—READ FIRST! .........................................................................................................4
SECTION 2 PUMP DESIGNATION SYSTEM ................................................................................................5
SECTION 3 HOW IT WORKS—INTERNAL GEAR TECHNOLOGY ..................................................... 8
SECTION 4 SUGGESTED INSTALLATION & OPERATION ................................................................... 9
SECTION 5 MAINTENANCE .............................................................................................................................. 12
SECTION 6 DISASSEMBLY ............................................................................................................................... 14
SECTION 7 REASSEMBLY................................................................................................................................. 15
SECTION 8 TROUBLESHOOTING .................................................................................................................. 17
SECTION 9 WARRANTY......................................................................................................................................19

1903-a00 4
S E C T I O N 1
Cautions—Read First!
CAUTION: Only personnel who are familiar with the
operation and repair of mechanical products should perform
the necessary maintenance. You must familiarize yourself
with the entire contents of this manual prior to operating
and/or performing any maintenance.
CAUTION: When selecting a V Series pump for an
application, you must first ensure that the pump components
are compatible with the process media.
CAUTION: Prior to startup, review and understand end-
clearance adjustments. Following these guidelines will
ensure proper end-clearance adjustment avoiding
interference between the gears and head. Interference may
cause heat generation and premature wear.
CAUTION: Do not operate this pump in excess of its rated
capacity, pressure, speed and temperature.
CAUTION: Before any maintenance and repair is
attempted, disconnect the drive.
CAUTION: Before any maintenance or repair is attempted,
bleed all pressure from the pump through the suction or
discharge lines.
CAUTION: Do not remove any pressure-containing
components during pump operation.
CAUTION: All V Series pumps contain residual hydraulic oil
from the factory production test. Hypar-FG 15 food-grade oil
is the standard production test fluid, but any certified
performance testing may be done on a non-food grade oil,
such as Unilube 32 (ISO 32) or Unilube 100 (ISO 100).
Determine if this is compatible with the fluid you are
pumping. If the fluid is incompatible, then the pump must be
fully flushed prior to use.
CAUTION: When pumping fluids at elevated temperatures,
care should be taken to gradually increase temperature.
Rapid temperature increase can damage internal
components.
CAUTION: Ensure that the pump has cooled to a safe
temperature before any maintenance or repair is attemped.
CAUTION: When pumping fluids at elevated temperatures
the piping may expand, resulting in excessive stress on the
pump. This can cause pump failure. Care must be taken
when considering pipe design to avoid damage from thermal
expansion.
CAUTION: Do not run the pump dry. This can cause
damage to internal components and generate heat, creating
a hazardous condition for volatile fluids.
CAUTION: Prevention of static sparking –If static sparking
occurs, fire or explosion could result. Pump, valves and
containers must be grounded to a proper grounding point
when handling flammable fluids and whenever discharge of
static electricity is a hazard.
CAUTION: The packing in a packed pump is designed to
leak. Therefore, when pumping hazardous liquids, a
mechanical seal is recommended to minimize any potential
source of leakage that could result in a hazardous condition.
CAUTION: Do not adjust packing while pump is in operation.
CAUTION: All inlet and discharge plumbing should be clean
and free from foreign material prior to startup of pump.
CAUTION: Keep hands and fingers away from any pump
opening while the pump is connected to the drive.
CAUTION: When connecting to an electric motor, follow all
safety recommendations provided by the motor
manufacturer.
WARNING: In any positive-displacement pump system, a
reliable pressure-protection device must be used in the
discharge piping to avoid a dangerous pressure increase,
which could cause the pump or any component in the
discharge piping to burst and can lead to serious injury. A
pump-mounted integral relief valve is not intended to be
used in this manner.
CAUTION: Never remove safety guards from shafts,
couplings, V-belts or pulleys during operation. Doing so
could result in injury.
CAUTION: When pumping high-temperature fluids, avoid
contact with the pump. Serious injury could occur.
CAUTION: Do not wear loose or dangling clothing or jewelry
near the equipment. These items could become caught in
the equipment and cause injury.
CAUTION: Before any maintenance or repair is attemped,
ensure that the pump has been thoroughly flushed of any
hazardous fluids. Review the Material Safety Data Sheet
(MSDS) applicable to the fluid for proper handling.

1903-a00 5
S E C T I O N 2
Pump Designation System
EXAMPLE:
V2-254WDA/4ART/BPGNA/N/CHN/000
V2-
MODEL
EXTERNAL
MATERIAL
INTERNAL
MATERIAL
CLEARANCE
PORTS
ORIENTATION
BUSHINGS
SEAL TYPE /
MATERIAL
SEAL
FACES
RELIEF VALVE
JACKET
OPTIONS
SPECIALTY
CODE
55
W
D
A
2.5A
RT
B
PG
NA
N = NO RELIEF
VALVE
CHV
000
133
B
3A
LT
T
PW
NS
05
CHN
254
C
4A
TR
I
3T
SCA
06
CNV
423
5A
TL
X
SCC
08
CNN
09
12
16
MATERIAL CODES
MODELS
V2-55 = 55 in³/rev
V2-133 = 133 in³/rev
V2-254 = 254 in³/rev
V2-423 = 423 in³/rev
MATERIAL (EXTERNAL)
W = CAST IRON
MATERIAL (INTERNALS)
D = DUCTILE IRON
CLEARANCES (NT1-55/133/254/423)
A = [< 1,600 cSt, <232°C (<450°F)]
B = [1,600-16,000 cSt, <232°C (<450°F)]
C = [16,000-54,000 cSt, <232°C (<450°F)]
PORTS
2.5A = 2.5" ANSI
3A = 3" ANSI
4A = 4" ANSI
5A = 5" ANSI
ORIENTATION (when looking from the shaft)
RT = Right Suction, Top Discharge
LT = Left Suction, Top Discharge
TR = Top Suction, Right Discharge
TL = Top Suction, Left Discharge
BUSHINGS
B = Bronze bushings
T = Tungsten carbide bushings
I = Hardened cast iron bushings
X = No bushing (Customer Supplied)
SEAL TYPE / MATERIAL
PG = Packing (PTFE-GRAPHITE)
PW = Packing (Wedgee)
3T = Triple Lip Seal (PTFE)
SEAL FACES
NA = NOT APPLICABLE (PACKING)
NS = NO SEAL (Customer Supplied)
SCA = Silicone Carbide/TFE/P Elastomers
SCC = Silicone Carbide/FFKM Elastomers
RELIEF VALVE (V2-55)
N = NO RELIEF VALVE
06 = 20 to 60 psi
09 = 61 to 90 psi
16 = 91 to 100 psi
RELIEF VALVE (V2-133)
N = NO RELIEF VALVE
05 = 20 to 50 psi
08 = 51 to 75 psi
RELIEF VALVE (V2-254)
N = NO RELIEF VALVE
06 = 30 to 60 psi
10 = 61 to 75 psi
RELIEF VALVE (V2-423)
N = NO RELIEF VALVE
07 = 40 to 70 psi
12 = 71 to 75 psi
JACKET OPTIONS
CHV = Case jacketed (C), head jacketed (H),
valve jacketed (V)
CHN = Case jacketed (C), head jacketed (H),
valve non-jacketed (N)
CNV = Case jacketed (C), head non-jacketed (N),
valve jacketed (V)
CNN = Case jacketed (C), head non-jacketed (N),
valve non-jacketed (N)

1903-a00 6
EXAMPLE:
V2-254WDA/4ART/BPGNA/N/CHN/000_CXXXX_BSDCSXXX_GYYYYRZZ_MXXXZHPYYYY_ZZZV XXHz_AAA/B/WEG
CERT
BASEPLATE
_C
CERTIFIED
HYDRO
TEST
MATERIAL
CERT
PMI
CERT
PERFORMANCE
TESTS
BASEPLATE
SELECTED
BASEPLATE
LENGTH
REF
GEAR
REDUCER
AND
RATIO
GEARBOX
FRAME
REF
MOTOR
FRAME
SIZE
MOTOR
HP
MOTOR
SPEED
(RPM)
MOTOR
VOLTAGE
MOTOR
FREQ.
(Hz)
MOTOR
ENCLOSURE
RATING
INVERTER
DUTY
MOTOR
MFG
CODE
X
X
X
X
BSDCS
XXX
GYYYY
RZZ
MXXX
ZHP
YYYY
ZZZ
XX
Blank
Y
XXX
N
A
N
P
EXP
N
W
B
N
TEFC
Blank
C
W
D
CERT CODES
BASEPLATE CODES
C = DENOTES CERTIFICATION(S) SELECTED
CERTIFIED HYDRO TEST (WITNESS / NON-WITNESS)
X =Not Required
N =Certified Hydrostat Non-Witness
W=Certified Hydrostat Witness
MATERIAL CERTIFICATION (NOT REQUIRED / 3.1 MAT’L CERTS
FOR WETTED COMPONENTS)
X = Not Required
A =3.1 Material Certs for Wetted Components
B =3.1 Material Certs (Pressure Containing) w/Photo –MCM
C =2.2 Material Report (Pressure Containing) - MR
D =2.2 Material Report (Pressure Containing) w/Photo - MPT
PMI CERTIFICATION (NOT REQUIRED / WETTED COMPONENTS
NON-WITNESS / WETTED COMPONENTS WITNESS)
X = Not Required
N = Non-Witness
PERFORMANCE TESTS
X =Not Required
P =Production Test Report (PTR)
N=Certified Performance Test (Non-Witness)
W = CERTIFIED PERFORMANCE TEST (WITNESS)
BSDCS = DESIGNATES BASEPLATE SELECTED
XXX = BASEPLATE LENGTH REFERENCE
GYYYY = GEAR REDUCER SELECTED AND RATIO
RZZ = GEARBOX FRAME REFERENCE
MXXX = MOTOR FRAME SIZE
ZHP = MOTOR HORSEPOWER
YYYY_ZZZVXXHZ
YYYY = Motor Speed in RPM
ZZZ = Motor Voltage
XX = Motor frequency in Hz
MOTOR ENCLOSURE RATING
Blank = no rating
EXP = Explosion Proof
TEFC = Totally Enclosed Fan Cooled
B –INVERTER DUTY
Y = Yes
N = No
Blank = Not specified
XXX –MOTOR MANUFACTURER CODE
SPECIFICATIONS: PUMP JACKETING
Model
Number
Maximum Temperature/Pressure of Fluid in Jackets
Steam (Saturated)
Heat Transfer Oil
Temperature
Pressure
Temperature
Pressure
°F
°C
PSIG
Bar
°F
°C
PSIG
Bar
V2-55
365
185
150
10.4
450
232
150
10.4
V2-133
365
185
150
10.4
450
232
150
10.4
V2-254
365
185
150
10.4
450
232
150
10.4
V2-423
365
185
150
10.4
450
232
150
10.4
(1) Ports are suitable for use with 125# ANSI cast or ductile iron or 150# ANSI steel companion flanged fittings. All other tapped for standard pipe (NPT).
(2) For use at higher temperatures. Consult factory for recommended materials of construction.

1903-a00 7
SIZES AVAILABLE
Pump Model
Port Sizes1
Pump Only
V2-55
2-1/2" ANSI
82 kg (180 lb)
V2-133
3" ANSI
160 kg (350 lb)
V2-254
4" ANSI
240 kg (530 lb)
V2-423
5" ANSI
340 kg (750 lb)
1Flanged connections meet Class 125# ANSI
PUMP SELECTION PERFORMANCE CRITERIA
Model
Nominal Pump Rating
1Max. Discharge Pressure
Max. Temperature
RPM
M3/H (GPM)
BAR (PSIG)
Celcius (Fahrenheit)
V2-55
420
20 (90)
6.9 (100) >20 cSt
232° (450°)
V2-133
350
45 (200)
5.2 (75) >20 cSt
232° (450°)
V2-254
280
64 (280)
5.2 (75) >20 cSt
232° (450°)
V2-423
280
102 (450)
5.2 (75) >20 cSt
232° (450°)
1Maximum pressure listed reflects maximum differential pressure and maximum allowable working pressure.
2Values listed in table are nominal and for reference only. To ensure proper pump selection, always refer to Blackmer CHOICE

1903-a00 8
S E C T I O N 3
How It Works—Internal Gear Technology
The V SERIES GEAR PUMP is a rotating, positive displacement pump. These drawings show the flow pattern through the pump
upon its initial rotation. It is assumed that the pump has no fluid in it prior to its initial rotation.
As the rotor continues to turn, the liquid is
forced past the crescent-shaped area and
moves toward the discharge port.
As the rotor completes one complete
rotation, the rotor and idler teeth interlock,
forcing the liquid through the discharge of the
pump. The pump may take several rotations
to completely prime depending on the
conditions of the application.
3
4
The shaded area indicates the liquid as it is
drawn into the liquid inlet port of the pump. As
the rotor turns, atmospheric pressure forces
the liquid between the rotor teeth and idler
teeth. The two arrows indicate the rotational
direction of the pump.
1
2
As the rotor continues to turn, the liquid is
forced through the crescent-shaped area of
the wetted path. The crescent-shaped area
divides the liquid and acts as a barrier
between the inlet and discharge ports.

1903-a00 9
Anchor bolts are usually sized smaller than the anchor bolt hole
size in the base. Calculate bolt length as indicated in the Figure A
on the left.
The ID of the sleeve should be two bolt sizes larger than the
anchor bolt.
Allow approx. ¾" - 1½" space between the bottom edge of the
baseplate and the foundation for grouting.
A “Sleeve” type anchor bolt is shown here. Alternatively, a “hook”
or “J” type anchor bolt may be used.
Pack the space between the anchor bolt and sleeve to prevent
concrete and/or grout from entering this area.
S E C T I O N 4
Suggested Installation and Operation
V Series gear pumps are designed to meet the performance requirements of even the most demanding pumping applications. They
have been designed and manufactured to the highest standards and are available in a number of different sizes to meet your pumping
needs. Refer to the performance section of this manual for an in-depth analysis of the performance characteristics of your pump.
INSTALLATION
Months of careful planning, study and selection efforts can result in unsatisfactory pump performance if installation details are left to
chance.
Premature failure and long-term dissatisfaction can be avoided if reasonable care is exercised throughout the installation process.
LOCATION
Noise, safety and other logistical factors usually dictate where equipment will be situated on the production floor. Multiple installations
with conflicting requirements can result in congestion of utility areas, leaving few choices for additional pumps.
Within the framework of these and other existing conditions, every pump should be located in such a way that key factors are
balanced against each other to maximum advantage.
ACCESS
The location of the pumping unit should be accessible. If it’s easy to reach the pump for maintenance, personnel will have an easier
time carrying out routine inspections and adjustments. Should major repairs become necessary, ease of access can play a key role
in speeding the repair process and reducing total downtime.
FOUNDATION
BASEPLATES AND ANCHORS
The preferred mounting for a baseplate is on a concrete pad with grouting. No matter how robust the design, there is always some
flexibility in the baseplate itself. If there is insufficient support under the baseplate, it can distort, causing alignment difficulties and
normal vibrations can be amplified to unacceptable levels through resonance in the pump support and/or piping. A properly grouted
baseplate will resist distortion and will provide sufficient mass to dampen any vibration.
NOTE: When pumps and motors are assembledon a baseplate at the factory, a preliminary alignment is doneto ensure that the pump and
motor can be aligned at its installation. This alignment is not to be considered as a final alignment. The factory alignment can, and does,
change during shipment and when the pumping unit is installed. Actually, several alignments are necessary as will be described later.
Anchor (foundation) bolts are used to hold the baseplate to its support structure, whatever that may be. In the preferred case of
mounting the pump unit on a concrete pad, the anchor bolts are set into the pad as indicated in the following illustration. When
pouring the pad, it’s helpful to have a wooden template attached to the foundation form to position the anchor bolts at their locations
as indicated on the pump unit assembly drawing.
FIGURE A –TYPICAL ANCHOR BOLT (SLEEVE TYPE)

1903-a00 10
BASE INSTALLATION AND GROUTING
NOTE: Before the baseplate is installed, it is advisable to thoroughly clean the underside to enable the grouting to adhere to it. Do
not use oil-based cleaners since grout will not bond to it.
Once the concrete pad has cured, the baseplate can be carefully lowered over the anchor bolts.
Place shims or tapered wedges under the baseplate at each of the anchor bolt positions to provide about 0.75" –1.50" clearance
between the base and the foundation. Adjust shims/wedges to level the baseplate. Since there may be some flexibility in the
baseplate, we must perform an initial alignment prior to grouting to ensure that a final alignment can be achieved. See
section covering Alignment of Pump/Driver Shafts. Potential problems here include bowing and/or twisting of the baseplate. If
gross misalignment is observed, shims/wedges may have to be added under the mid-point of the base or the shims/wedges at the
corners may have to be adjusted to eliminate any twist. If the driver feet are bolt-bound for horizontal alignment, it may be necessary
to loosen the pump hold-downbolts and shift the pump and driver to attain horizontal alignment. Whenalignment has been achieved,
lightly tighten the anchor bolts. The anchor bolts should not be fully tightened until the grout has set.
Grouting furnishes support for the pump unit baseplate providing rigidity, helping to dampen any vibration and serves to distribute
the weight of the pump unit over the foundation. To be effective, grouting must completely fill all voids under the baseplate. For proper
adhesion or bonding, all areas of the baseplate that will be in contact with the grout should be thoroughly cleaned. See note above.
The grout must be non-shrinking. Follow the directions of the grout manufacturer for mixing. Proceed with grouting as follows:
NOTE: If the size of the equipment or the layout of the installation requires it, grouting can be done in two steps as long as the first
step is allowed to cure completely before the second step is applied
1. Build a sturdy form on the foundation around the baseplate to contain the grout.
2. Soak the top of the concrete foundation pad thoroughly. Remove surface water before pouring.
3. Pour the grout through the hole(s) in the top and/or through the open ends of the channel steel baseplate, eliminating air
bubbles by tapping, using a vibrator or pumping the grout into place. If necessary, drill vent holes into the top of the base
to evacuate air.
4. Allow grout to set completely, usually a minimum of 48 hours.
5. Tighten foundation anchor bolts.
6. Recheck alignment to ensure that there have been no changes.
7. After the grout has dried thoroughly, apply an oil base paint to shield the grout from air and moisture.
PIPING
Final determination of the pump site should not be made until the piping challenges of each possible location have been evaluated.
The impact of current and future installations should be considered ahead of time to make sure that inadvertent restrictions are not
created for any remaining sites.
The best choice possible will be a site involving the shortest and straightest hookup of suction and discharge piping. Unnecessary
elbows, bends and fittings should be avoided. Pipe sizes should be selected to keep friction losses within practical limits.
All piping should be supported independently of the pump. In addition, the piping should be aligned to avoid placing stress on the
pump fittings. To eliminate possible closing of the line when performing pump maintenance, a gate valve should be installed at the
suction line.
V Series gear pumps are positive displacement pumps; as such, care must be used in protecting piping and components used in
your system. Pumps equipped with an internal relief valve are designed to protect the pump only. A system relief valve should be
installed along with the pump's internal relief valve.
When placing the pump, choose a location as close to the product source as possible. Care should be taken in your supply line to
avoid cavitation due to viscosity and suction lift. NOTE: Some liquids may become thicker with temperature changes. Please refer
to your supplier of product being pumped for information on viscosity changes due to temperature. Avoid air pockets on suction side
of pump when designing piping layout. This will also reduce the possibility of cavitation. The weight of the piping should not be
supported or absorbed by the pump. Suction and discharge piping should be supported by pipe hangers or another suitable means.
VSeriespumpsarenotsuitedforpumping dirty, solid-ladenliquidsunlessspecialprovisionsaremade. Contactthefactoryforguidance.
A strainer should be used on the suction side of the pump. The strainer should consist of an adequate size mesh screen as to not
cause excessive friction loss. It is suggested that a maintenance program is created to assure that the inlet strainer remains free of
obstructions and blockage.
PORT ORIENTATION AND SHAFT ROTATION: V Series pumps can be operated in eithera clockwise or counterclockwise rotation.
The shaft rotation determines which port is suction or discharge.

1903-a00 11
PRESSURE RELIEF VALVES
•V Series pumps are positive displacement pumps, which means the system must have provisions for pressure relief
protection, such as a relief valve mounted directly on the pump or inline with the system. Alternatively, the system can be
installed with a torque-limiting device or a rupture disk.
•If the system requires the pump to operate in both directions, pressure relief protection is required on both sides of pump.
•When using an integral relief valve, the adjusting screw cap must always point towards the suction side of pump. If shaft
rotation has to be reversed, simply remove the pressure relief valve and reinstall it in the proper configuration to avoid
over-pressurization of the system.
•Pressure relief valves are not intended to control pump flow or regulate discharge pressure.
•The pump-mounted integral relief valve should never be relied upon for system protection.
START UP
•Check to ensure that the pressure/vacuum gauges are installed on inlet and discharge side of the pump.
•Check to ensure that installation and piping are correctly fastened and supported.
•Check to ensure that the pump and driver are properly aligned.
•Verify that the motor is wired correctly. Check to ensure that the thermal overload relays are properly sized and set for
operation.
•With motor/driver locked out, check that the pump rotates by hand.
•Jog motor to validate correct rotation.
•Check to ensure that the coupling guard and all other safety-related devices and instrumentation are in place and in
working order.
•Check to ensure that the pressure relief valve is installed correctly.
•Lubricate any grease fittings and/or bearings.
•Open suction, discharge and any auxiliary valves, such as in-line PRV loops, to ensure proper flow into and out of pump.
•Prime pumping chamber and seal chamber, if possible.
•Gradually warm the pump to the required operating temperature to achieve the proper fluid viscosity.
WARNING: If the pump is not uniformly heated, and the fluid has not reached the viscosity that the pump was designed to handle,
pump failure can occur.
•Start pump. If flow is not achieved in 30 seconds shut-off immediately. “Dry” running a pump for extended periods of time
will damage the pump. If fluid does not start to flow in 30 seconds, revisit the previous steps.
•If every step has been followed, manually fill the pump with the process fluid or a lubricating fluid compatible with the
process and restart the pump. If no fluid is flowing within 30 seconds shut the pump down and proceed to troubleshooting
section of this document.
•Once pump is operational, listen for any untoward noise, check for any significant vibration or indications of binding. If any
of these are observed, the pump should be stopped immediately and a thorough check of the installation should be made
to determine the cause. Correct any fault(s) prior to re-starting the pump.
•Check the shaft seal. If pump has a triple-lip seal or mechanical seal, there should be no visible leakage. If pump has
packing, there should be a steady leakage stream. Packing leakage should be reduced gradually by tightening the gland
nuts ¼-turn at a time until a leakage rate of 40-60 drops per minute is achieved. This may take several hours and several
adjustments, but it is required to ensure adequate packing and shaft life.

1903-a00 12
S E C T I O N 5
Maintenance
GENERAL MAINTENANCE
CLEANING: V Series pumps must be maintained and kept as clean as possible. This will allow for quick inspection, adjustment and
repair work.
LUBRICATION: Use multi-purpose NLGI #2 grease on all lubrication fittings every 500 hours of operation. Do not over-grease.
Applications involving extreme temperatures (high or low) may require other types of lubrication. Consult factory for specific
lubrication recommendations.
END PLAY ADJUSTMENT: Frictional wear on internal components of the pump may result in loss of pressure/flow in service due
to slip. Pump performance can be improved by adjusting the end play (see Section 7 for “WET END ASSEMBLY”).
STORAGE: If a pump is to be stored for more than six (6) months, the pump must be drained prior to storing. A light coat of light oil
should be applied to all internal pump parts in order to prevent corrosion. Operators should also lubricate the fittings and apply grease
to the pump shaft, while periodically rotating the pump shaft by hand one (1) complete revolution every 30 days to circulate the oil.
Be sure to inspect the fastener torque before putting the pump in service after being stored.
STANDARD PACKING MAINTENANCE
PACKING ADJUSTMENT: Newly packed pumps require initial packing adjustments to control leakage. Small initial adjustments are
needed to prevent over-tightening of the packing gland. After initial startup, additional adjustments may be required. Finally, the
packing should also be checked periodically and adjusted as needed. Refer to Section 4 for “START UP”section for more detail.
REMOVAL
1. Remove packing gland fasteners.
2. Slide the packing gland along the shaft out of the stuffing box.
3. Remove the packing.
4. Remove packing retaining washer.
INSTALLATION
1. Ensure packing is chemically compatible with the liquid being pumped; consult with factory recommendations.
2. Install packing retaining washer in the stuffing box.
3. Lubricate packing rings with oil, grease or graphite to aid with assembly.
4. Stagger the packing joints from one side of the shaft to the other. The joints of adjacent strands should never be in line
with each other.
5. Install the packing gland and nuts.
6. Ensure that the gland is installed squarely and the nuts are tightened evenly.
7. Tighten the nuts until packing gland contacts packing. Final adjustment should be made per Section 4 "START UP"
procedure.
WEDGEE PACKING MAINTENANCE
Wedgee packing sets eliminate the clearance gap at the bottom of pump stuffing box bore and provides a positive interference fit
against the shaft to prevent solids from penetrating into the packing.
Proper installation of the wedgee on the pump is important to achieve the maximum efficiency of operation. Periodic packing
adjustment and inspection procedures are similar to the standard packing procedures.

1903-a00 13
REMOVAL
1. Remove packing gland fasteners.
2. Slide the packing gland along the shaft out of the stuffing box.
3. Remove the packing rings.
4. Remove the two-piece wedge seal
5. Remove packing retaining washer.
INSTALLATION
1. Ensure wedgee packing material is chemically compatible with the liquid being pumped; consult with factory for
recommendations.
2. Install packing retaining washer into the stuffing box sliding over the shaft.
3. Install the male component of the two-piece wedge seal by spreading apart at the split and slipping over the shaft. The flat
side of the male component faces the packing retaining washer.
4. Next, install the female component of the two-piece wedge seal so that both parts fit together like a single unit.
5. Lubricate packing rings with compatible oil, grease or graphite to aid with assembly.
6. Stagger the packing joints from one side of the shaft to the other. The joints of adjacent strands should never be in line
with each other.
7. Install the packing gland and nuts.
8. Ensure that the gland is installed squarely and the nuts are tightened evenly.
9. Tighten the nuts until packing gland contacts packing. Final adjustment should be made per Section 4 “START UP”
procedure.
CARTRIDGE TRIPLE-LIP SEAL MAINTENANCE
Blackmer offers a cartridge triple-lip seal as an alternative for packing. The seal comes pre-lubricated with Magnalube high-
temperature grease. Do not remove the plugs from the gland or attempt to install flush lines because this could cause the grease to
be lost.
REMOVAL
1. If installed, disconnect all flush lines or barrier fluid tubes (see Section 6 for "DISASSEMBLY").
2. Loosen the set screws on the seal collar to free the cartridge seal from the shaft.
3. Remove the two (2) fasteners from the seal gland.
4. Slide the cartridge seal out of the stuffing box.
INSTALLATION
•Clean the rotor shaft and the seal housing bore (stuffing box) prior to installation. Make sure the sealing surfaces are free
of dirt, burrs and scratches. Using emery paper, gently smooth leading edge of the shaft diameter.
•Lubricate the rotor shaft and inside diameter of the seal generously with light oil.
•Slide the cartridge seal over the shaft until it contacts the seal chamber face.
•Install the gland and nuts.
•Turn the shaft several times while the gland is loose to center the seal.
•Tighten nuts securely and evenly.
•Lock the cartridge seal drive collar to the shaft by tightening the set screws evenly. Do not over-torque as this may cause
distortion on the collar.
•Turn the shaft by hand or bump motor in order to test the rotation and to check the drive collar for run-out.

1903-a00 14
S E C T I O N 6
Disassembly
WET END DISASSEMBLY
1. Remove the screws that hold the head to the casing.
2. Remove the head from the pump using either jacking screws or prying bar. WARNING: Protect the idler gear from falling
as it may become loose during removal of the head.
3. Remove the idler gear and bushing assembly.
4. Remove the seal or packing set (see Packing and Seal Maintenance section).
5. Loosen the six (6) mounting fasteners that hold the RBS to the casing or adapter plate. Use provided jacking screws if
needed.
6. Carefully remove the rotor/shaft assembly. Threaded screw holes are provided on the end of the rotor for lifting purposes
to ease removal.
7. For 55, 133 and 254 size pumps, remove the screws that hold the adapter plate to the casing and remove the adapter
plate.
8. For 133, 254 and 423 size pumps, remove the thrust washers from the rotor/shaft assembly and rotor bearing sleeve
assembly.
9. Clean all parts thoroughly and examine the parts for wear or damage. Replace RBS bushings, thrust washers and idler
pin, as necessary.
PRESSURE RELIEF VALVE DISASSEMBLY
1. Place a mark on the valve and head prior to disassembly in order to ensure proper reassembly.
2. Remove the pressure relief valve cap.
3. Measure and record the extension length of the adjusting screw to reset full bypass pressure during reassembly.
4. Loosen the pressure relief valve lock nut and then back out pressure relief valve bonnet and adjusting screw until the
spring pressure is released.
5. Remove, clean and inspect all parts (i.e., bonnet, spring guide, spring and poppet) for wear or damage and replace as
needed.

1903-a00 15
S E C T I O N 7
Reassembly
WET END ASSEMBLY
1. Clean all parts thoroughly before assembly.
2. Install the RBS bushing. If the bushing has a lubrication groove, install the bushing with lubrication groove facing towards
the bottom of the RBS. If applicable, align the radial lubrication hole on the bushing with a grease hole on the RBS.
3. For 55, 133 and 254 size pumps, attach the rear plate and gasket to the case.
4. Install the RBS gasket on the rear plate, aligning the holes with bolt pattern of the studs.
5. For 133, 254 and 423 size pumps, install the stationary thrust washer onto the RBS with the groove facing the rotor. Use a
light coating of grease on the backside of the thrust washer to help retain it to the RBS during installation.
6. Attach the RBS assembly to the rear adapter plate/case.
7. Coat the rotor and shaft assembly with light oil.
8. Install rotating thrust washer on the rotor/shaft assembly and align with the driving pins. Use a light coating of grease on
the backside of the thrust washer to help retain it to the rotor during installation.
9. Insert the end of the shaft through the case into the RBS bushing. Slowly push the rotor assembly until it touches the
stationary thrust washer mounted on the RBS. (CAUTION: - Make sure the rotating thrust washer doesn’t fall from the
back of rotor during assembly.)
10. Press the idler pin into the head. Note the following during head assembly:
•Idler pin cooling port should face the crescent while aligning the cross port with the appropriate porting in the head
casting.
•The idler pin must be recessed 0.010” – 0.030” below the face of the crescent (Refer to Figure B).
•Install the NPT plug on the suction side of dovetail located on head casting. If applicable, install grease fitting or pipe
plug on the idler pin.
FIGURE B –IDLER PIN POSITION
11. Install the idler bushing.
12. Coat the idler pin with light oil.
13. Place the idler and bushing assembly on the idler pin.
14. Install the head gaskets onto the head, aligning the holes with the bolt pattern. Use the gasket set indicated in the
“Starting Gasket Set” column from Table A.

1903-a00 16
TABLE A –HEAD GASKET SETS
Pump Models
Starting Gasket Set
Gasket Set Provided
V2-55
1 - .006”, 1 - .015”
2 - .006”, 1 - .015”
V2-133, 254 & 423
1 - .006”, 1 - .015”
1 - .006”, 2 - .015”
TABLE B –ROTOR END CLEARANCE/END PLAY
Pump Models
Clearance
Viscosity (CST)
Temperature C (F)
Target Minimum
End Play
All
A
< 1,600
<232°C (<450°F)
.005”
B
1,600 –16,000
.010”
C
16,000 –54,000
.015”
15. Install the head/idler assembly, using the dowel pin to determine proper alignment.
16. Measure the end play of the rotor/shaft assembly by placing a dial indicator at the end of the shaft. The dial indicator can
also be placed through the PRV ports on the head allowing the indicator to contact the end of the rotor tooth. If end play is
less than the “Target Minimum End Play” from Table B above, remove the head and use a different combination of
gaskets. The supplied gasket set can be found in the “Gasket Set Provided” column from Table A.
17. If applicable, install pressure relief valve (see Section 4 for "PRESSURE RELIEF VALVE ASSEMBLY").
18. Install the mechanical seal or packing (see Section 5 for "MAINTENANCE").

1903-a00 17
S E C T I O N 8
Troubleshooting
PUMP RUNS, BUT LITTLE PRODUCT FLOWS
•Pump speed is too slow.
•Suction piping strainer is too small or obstructed.
•Suction pipe or port is not immersed deep enough within the liquid.
•Piping is improperly installed, permitting air pockets to form in the pump.
•Increased clearances or wear in the pump can cause the pump to deliver an insufficient supply of liquid.
•Air leaks in the suction line.
•Suction losses are too great. The suction lift is too great or the suction line is too small or too long. This can be detected
by installing a vacuum gauge directly at the pump suction. The maximum vacuum at the pump suction should never
exceed 381 mm-Hg (15 in-Hg). Vaporization caused by higher vacuums will generally result in a reduction of capacity.
•Improper orientation of the head.
PUMP RUNS BUT NO PRODUCT FLOWS
•Leaks in suction line or port passage. These can be detected by submerging the pressure line from the discharge side of
the pump.
•Direction of shaft rotation is incorrect.
•Relief valve setting is too low. Liquid is discharging through the by-pass port.
•The net-positive suction head available (NPSHa) is lower than required for the vapor pressure of the liquid pumped.
Recalculate the NPSHa and redesign piping, if necessary.
•Improper orientation of the head.
PUMP OPERATION IS ERRATIC OR INCONSISTENT
•Inconsistent suction conditions.
•Leaking suction lines.
•Pump cavitation due to air or vapor in liquid.
PUMP IS EXCESSIVELY NOISY
•The shaft is worn or bent, causing pump vibration.
•There is an air leak on suction line.
•Cavitation in the pump is occurring.
•The coupling is too close to the pump.
•The coupling is misaligned.
PUMP IS LEAKING
•Retighten all fasteners.
NOTE: Packed gear pumps are designed to leak slightly to prevent excessive heat build-up. An expected leak rate for packed gear
pumps is a few drops per minute; more than this may indicate a problem.
CAUTION: When pumping hazardous liquids, a mechanically sealed gear pump is suggested to minimize any potential source of
leakage that could result in a hazardous condition.
PUMP IS DRAWING TOO MUCH POWER
•The pressure is too high.
•Drive shaft and pump are misaligned.
•Pump shaft is bent.
•Pumped liquid has a higher viscosity than originally accounted for.
•Suction or discharge lines are obstructed or restricted.
•Insufficient horsepower.
•
Insufficient end clearance, therefore pump is binding.

1903-a00 18
Notes

1903-a00 19
S E C T I O N 9
Warranty
Each and every product manufactured by Blackmer is built to meet the highest standards of quality. Every Blackmer Internal Gear
Pump is functionally tested to ensure integrity of operation.
Blackmer warrants that internal gear pumps, accessories and parts manufactured or supplied by it to be free from defects in material
and workmanship for a period of five (5) years from date of installation or six (6) years from date of manufacture, whichever comes
first. Failure due to normal wear, misapplication, or abuse is, of course, excluded from this warranty.
Since the use of Blackmer Internal Gear Pump equipment is beyond our control, we cannot guarantee the suitability of any internal
gear pump or part for a particular application and Blackmer shall not be liable for any consequential damage or expense arising from
the use or misuse of its products on any application. Responsibility is limited solely to replacement or repair of defective Blackmer
Internal Gear Pump products.
All decisions as to the cause of failure are the sole determination of Blackmer.
Prior approval must be obtained from Blackmer for return of any items for warranty consideration and must be accompanied by the
appropriate MSDS for the product(s) involved. A Return Goods Tag, obtained from an authorized Blackmer Internal Gear Pump
distributor, must be included with the items which must be shipped freight prepaid.
The foregoing warranty is exclusive and in lieu of all other warranties expressed or implied (whether written or oral) including all
implied warranties of merchantability and fitness for any particular purpose. No distributor or other person is authorized to assume
any liability or obligation for Blackmer other than expressly provided herein.
PLEASE PRINT OR TYPE AND SEND TO BLACKMER
PUMP INFORMATION
______________________________________________________________ __________________________________________________________________
Item # Serial #
___________________________________________________________________________________________________________________________________
Company Where Purchased
YOUR INFORMATION
___________________________________________________________________________________________________________________________________
Company Name
___________________________________________________________________________________________________________________________________
Industry
_______________________________________________________________________ _____________________________________________________
Name Title
___________________________________________________________________________________________________________________________________
Street Address
____________________________________________________________ _______ ___________ ____________________________________
City State Postal Code Country
__________________ ______________ _________________________________ _________________________________
Telephone Fax Email Web Address
Number of pumps in facility? _______________________________ Number of Blackmer pumps? _________________________________________
Types of pumps in facility (check all that apply): Diaphragm Centrifugal Gear Submersible Lobe
Other ___________________________________________________________________
Media being pumped? _______________________________________________________________________________________________________
How did you hear of Blackmer? Trade Journal Trade Show Internet/Email Distributor
Other ___________________________________________________________________________
ONCE COMPLETE, SEND TO [e-mail]

1903-a00
PSG Grand Rapids
1809 Century Avenue SW
Grand Rapids, MI 49503 USA
P: [phone] • F: [phone]
[e-mail]
blackmer.com
Where Innovation Flows
PSG®reserves the right to modify the information and illustrations contained in this document without prior notice. This is a non-contractual document. 05- 2018