BLACKMER SGLD2, SGLD3, SGLD4B, SGLWD4, SGLWD3 Installation, Operation And Maintenance Instructions

BLACKMER LIQUEFIED GAS PUMPS

For Liquefied Gas Service Truck And Base Mounted

INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS

MODELS: SGLD2, SGLD3, SGLD4B, SGLWD3, SGLWD4

This

When you see this symbol on the product, or in the manual,
look for one of the following signal words and be alert to the

potential for personal injury, death or major property damage

Warns of hazards that WILL cause serious personal injury,

TABLE OF CONTENTS Page

SAFETY DATA ..................................................................... 1

PUMP DATA

Pump Identification ..................................................... 2

Technical Data ........................................................... 2

Initial Pump Start Up Information ............................... 2

GENERAL INSTALLATION AND OPERATION

Welded Connections .................................................. 3

Pre-Installation Cleaning ............................................ 3

Location and Piping .................................................... 3

Pump Relief Valve and Bypass Valve ........................ 4

Relief Valve Setting and Adjustment .......................... 4

Check Valves ............................................................. 4

Pump Rotation ........................................................... 4

MOTOR DRIVEN PUMPS

Pump Mounting .......................................................... 5

Coupling Alignment .................................................... 5

Seal Barrier System Installation……….. ..................... 5

V-Belt Drive ................................................................ 8

V-Belt Disassembly .................................................... 8

Pre-Start Up Check List ............................................. 9

Start Up Procedures ................................................... 9

TRUCK MOUNTED PUMPS

Truck Mounting ........................................................ 10

Pump Drive .............................................................. 10

Hydraulic Drive ......................................................... 10

Pre-Start Up Check List ........................................... 11

Start Up Procedures ................................................. 11

Pump Speed ............................................................ 11

MAINTENANCE

Strainers ................................................................... 13

Lubrication ................................................................ 13

Vane Replacement ................................................... 14

Pump Disassembly .................................................. 14

Pump Assembly ....................................................... 16

TROUBLE SHOOTING ...................................................... 23

NOTE: Numbers in parentheses following individual parts

indicate reference numbers on Blackmer Parts Lists 801-B01.
Blackmer pump manuals and parts lists may be obtained from

Blackmer's website (www.blackmer.com) or by contacting
Blackmer Customer Service.

Warns of hazards that CAN cause serious personal injury,

Warns of hazards that CAN cause personal injury

Indicates special instructions which are very

Blackmer liquefied gas pumps MUST only be installed
in systems which have been designed by qualified
engineering personnel. The system MUST conform to
all applicable local and national regulations and safety
standards.

This manual is intended to assist in the installation
and operation of the Blackmer
and MUST be kept with the pump.

Blackmer
performed by qualified technicians ONLY. Service
shall conform to all applicable local and national
regulations and safety standards.

Thoroughly review this manual, all Instructions and
hazard warnings, BEFORE performing any work on
the Blackmer

Maintain ALL system and Blackmer liquefied gas
pump operation and hazard warning decals.

964425

INSTRUCTIONS NO. 801-B00

Section

Effective

Replaces

801

Jan 2019
Sep 2018

SAFETY DATA

is a SAFETY ALERT SYMBOL.

death or major property damage.

death or major property damage.

or property damage.

NOTICE:

important and must be followed.

NOTICE:

liquefied gas pumps,

liquefied gas pump service shall be

liquefied gas pumps.

SAFETY DATA

Failure to set the vehicle emergency
brake and chock wheels before
performing service can cause severe

Hazardous

machinery can

cause serious

personal injury.

personal injury or property damage.

Hazardous voltage.
Can shock, burn or

cause death.

Failure to disconnect and lockout
electrical power or engine drive before
attempting maintenance can cause

Hazardous

machinery can

cause serious

personal injury.

severe personal injury or death.

Do not operate

without guard

in place

Disconnecting fluid or pressure
containment components during pump
operation can cause serious personal

Hazardous pressure

can cause serious

personal injury or
property damage

injury or property damage.

Hazardous pressure

can cause serious

personal injury or
property damage

Failure to disconnect and lockout
electrical power before attempting
maintenance can cause shock, burns or
death.

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

Failure to relieve system pressure prior
to performing pump service can cause
serious personal injury or property
damage.

Systems with meters will still

be pressurized even after the hose is
emptied.

If pumping hazardous or toxic fluids,

Hazardous or toxic

fluids can cause

serious injury.

system must be flushed and
decontaminated, inside and out, prior to
performing service or maintenance.

PUMP DATA

PUMP IDENTIFICATION

A pump Identification tag, containing the pump serial number, I.D. number, and model designation, is attached to each pump. It is
recommended that the data from this tag be recorded and filed for future reference. If replacement parts are needed, or if
information pertaining to the pump is required, this data must be furnished to a Blackmer representative.

TECHNICAL DATA

Maximum Operating Temperature 240°F (115°C)
Minimum Operating Temperature -30°F (-34°C)
Maximum Pump Speed 640 RPM
Maximum Differential Pressure

2” and 3” models
4” model

Maximum Working Pressure 525 PSI (36.2 Bar)
Maximum Working Pressure (Dual

Seal, Plan 52 and 53)

Technical Data is for standard materials of construction.
Consult Blackmer Material Specs for optional materials of
construction.

150 PSI (10.3 Bar)
125 PSI (8.6 Bar)

350 PSI (24.1 Bar)

801-B00 Page 2/24

INITIAL PUMP START UP INFORMATION

Model No.: ____________________________________

Serial No.: ____________________________________

ID No.: _______________________________________

Date of Installation: _____________________________

Inlet Gauge Reading: ____________________________

Discharge Gauge Reading: _______________________

Flow Rate: _____________________________________

GENERAL INSTALLATION AND OPERATION

NOTICE:

Blackmer pumps must only be installed in systems
designed by qualified engineering personnel. System
design must conform with all applicable regulations and
codes and provide warning of all system hazards.

WELDED CONNECTIONS

NOTICE:

Pumps with welded connections contain three non­metallic o-ring seals that will be damaged if welding is
done with these O-rings installed.

Prior to welding the piping, remove the O-rings from under the
inlet flange, outlet flange and relief valve cover as indicated in
Figure 1.

Reinstall the inlet and outlet flanges. Weld the piping to the
the inlet and outlet flanges. After the welding is complete,
reinstall the O-rings.

PRE-INSTALLATION CLEANING

New pumps contain residual test fluid and rust inhibitor.
If necessary, flush pump prior to use.

Foreign matter entering the pump WILL cause extensive
damage. The supply tank and intake piping MUST be
cleaned and flushed prior to pump installation and operation.

Figure 1

NOTICE:

LOCATION AND PIPING

Pump life and performance will be significantly reduced when
installed in an improperly designed system. Before starting
the layout and installation of the piping system, review the
following:

1. Locate the pump as near as possible to the source of
supply to avoid excessive inlet pipe friction.

2. The inlet piping and fittings should be at least as large as
the intake port on the pump. It should slope downward to
the pump, and should not contain any upward loops.
Minimize the number of intake line fittings and eliminate
restrictions such as sharp bends; globe valves,
unnecessary elbows, and undersized strainers.

3. A strainer must be installed in the inlet line to protect the
pump from foreign matter. The strainer should be located
at least 24" (0.6m) from the pump, and have a net open
area of at least four times the area of the intake piping.
Strainers must be cleaned regularly to avoid pump
starvation.

4. The intake and discharge piping system must be free of
all leaks.

5. Expansion joints, placed at least 36" (0.9m) from the
pump, will compensate for expansion and contraction of
the pipes. Contact the flexible connector/hose
manufacturer for required maintenance/care and design
assistance in their use.

6. ALL piping and fittings MUST be properly supported to

prevent any piping loads from being placed on the pump.

7. Check alignment of pipes to pump to avoid strains which
might later cause misalignment. See Figure 2. Unbolt
flanges or break union joints. Pipes should not spring
away or drop down. After pump has been in operation
for a week or two, completely recheck alignment.

Figure 2

8. Install pressure gauges in the NPT ports provided in the
pump casing to check pump performance at start up.

9. The use of a vapor return line will speed up delivery by
preventing pressure build up at the receiving tank and
pressure reduction in the supply tank.

10. Keeping the liquefied gas systems full of liquid, even
when idle, will keep the O-rings from changing shape,
shrinking or super cooling. Evaporation of liquefied gas
leaves an abrasive powder on the surface which can
cause wear to the pump, meter, and seals.

801-B00 Page 3/24

GENERAL INSTALLATION AND OPERATION

INTERNAL PUMP RELIEF VALVE AND EXTERNAL BYPASS VALVE

NOTICE:

The pump internal relief valve is designed to protect the
pump from excessive pressure and must not be used as
a system pressure control valve.

For ALL liquefied gas applications, install an external bypass
valve, and any necessary piping, back to the tank. DO NOT
pipe the bypass valve back to the intake line. The setting on
the external bypass valve must be at least 25 psi (1.7 bar)
lower than the pump internal relief valve setting. Typically,
pump relief valves are factory set at the spring range mid­point.

The valve and piping must be of adequate size to
accommodate the full flow from the pump when the discharge
line is closed.

The 'Alternate Discharge to Storage Tank' line and manual
valve may be used to unload transports without pumps into
the storage tank. The manual valve in this line must remain
closed during all other operations.

Refer to Blackmer Bypass Valve Installation and Maintenance
Instructions for bypass valve settings and adjustments.

Figure 3 – Bypass Valve Mounting

RELIEF VALVE SETTING AND ADJUSTMENT

The relief valve pressure setting is marked on a metal tag
attached to the valve cover. Generally, the relief valve should
be set at least 15 - 20 psi (1.0 - 1.4 Bar) higher than the
operating pressure, or the external bypass valve setting.

DO NOT remove the R /V Cap OR adjust the relief valve
pressure setting while the pump is in operation.

1. To INCREASE the pressure setting, remove the relief
valve cap, loosen the locknut, and turn the adjusting
screw inward, or clockwise. Replace the valve cap and O­ring.

2. To DECREASE the pressure setting, remove the relief
valve cap, loosen the locknut, and turn the adjusting
screw outward, or counterclockwise. Replace the valve
cap and O-ring.

Refer to the individual Blackmer pump parts lists for various
spring pressure ranges.

Incorrect settings of the pressure relief
valve can cause pump component
failure, personal injury, and property

Hazardous pressure
can cause personal

injury or property

damage

damage.

Relief valve cap is exposed to pumpage
and will contain some fluid

Hazardous or toxic

fluids can cause

serious injury.

CHECK VALVES

The use of check valves or foot valves in the supply tank is
not recommended with self-priming, positive displacement
pumps.

If the possibility of liquid backflow exists when the pump is off,
a check valve in the pump discharge piping is recommended
because the pump can motor in the reverse rotation and
create undue stress on all attached components. Never start
a pump when it is rotating in the reverse rotation as the added
starting torque can damage the pump and related equipment.

PUMP ROTATION

NOTICE:

Confirm correct pump rotation by checking the pump
rotation arrows respective to pump driver rotation.

Blackmer SGL pumps have a double ended rotor and shaft,
enabling them to be driven from either shaft end. To change
rotation, rotate the pump 180 degrees so that the opposite
shaft becomes the driven shaft. The shaft protector (186)
MUST be mounted over the non-driven shaft.

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

Do not operate

without guard

in place

801-B00 Page 4/24

MOTOR DRIVEN PUMPS - INSTALLATION AND OPERATION

Install, ground and wire to local and

National Electrical Code requirements.

Install an all-leg disconnect switch near

the unit motor.

Disconnect and lockout electrical power

Hazardous voltage.
Can shock, burn or

cause death.

Motors equipped with thermal protection automatically

disconnect motor electrical circuit when overload exists.
Motor can start unexpectedly and without warning.

Consult the "General Installation and Operation" section
of this manual for system information.

PUMP MOUNTING

Permanently mount the unit by securing the base plate with
adequately sized anchor bolts to a level concrete floor
following recommended industry standards (See Figure 4). A
solid foundation will reduce system noise and vibration, and
will improve pump performance. Refer to ANSI/HI standards
or a suitable pump handbook for information on typical pump
mounting and foundations. Check coupling alignment after
pump and base assembly is secured to the foundation.

COUPLING ALIGNMENT

The pump must be directly coupled to a gear reducer and/or
driver with a flexible coupling. Verify coupling alignment after
installation of new or rebuilt pumps. Both angular and parallel
coupling alignment MUST be maintained between the pump,
gear, motor, etc. in accordance with manufacturer’s
instructions. See Figure 5.

1. Parallel alignment: The use of a laser alignment tool or
dial indicator is preferred. If a laser alignment tool or dial
indicator is not available, use a straightedge. Turn both
shafts by hand, checking the reading through one
complete revolution. Maximum offset should be less
than .0005" (0.127 mm).

before installation or service

Electrical supply MUST match motor

nameplate specifications.

NOTICE:

BOLT

BASE

STANDARD

PIPE

WASHER

Figure 4

2. Angular alignment: Insert a feeler gauge between the
coupling halves. Check the spacing at 90° increments
around the coupling (four checkpoints). Maximum
variation should not exceed 0.005" (0.127 mm). Some
laser alignment tools will also check angular alignment.

3. Replace the coupling guards after setting alignment.

Figure 5 – Coupling Alignment

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

Do not operate

without guard

in place

SEAL SUPPORT SYSTEM INSTALLATION
(Plan 52 and 53 Dual Seal Option Only)

Incorrect installation and operation of
the seal support system may cause
release of pressurized fluid.

Hazardous pressure
can cause personal

injury or property

damage

The Plan 52 and Plan 53 seal designs
require proper installation and
operation of a seal support system.
Failure to do so can result in primary

Hazardous or toxic

fluids can cause

serious injury.

seal failure and fluid release to
atmosphere.

INSTALLATION AND CONNECTION:

The 3” and 4” pumps may be fit with optional Dual Seals.
The following describes the general installation procedure for
a pump configured with Dual Seals.

The Seal Pot Assembly (to be referenced as SPA) is
procured and assembled by the customer. The SPA should
be rigidly mounted to the floor or base within approximately 4’
of the pump that it services.

Once firmly affixed to the floor/mounting surface, the SPA
may be plumbed to the pump. For pump seal integrity, it is
important that the pump seal is completely full of oil at all
times.

801-B00 Page 5/24

MOTOR DRIVEN PUMPS - INSTALLATION AND OPERATION

INSTALLATION AND CONNECTION: ….Continued

Reference the included drawings when reading the

following instructions.

Figure 6 Recommended Seal Pot Assembly (SPA) piping

arrangement for API plan 52 & 53

1) Find barrier fluid ports on seal cartridge (figure 6).
Each side of the pump has three (3) tapped ports
that lead to the chamber between the mechanical
seals (total of six (6) tapped ports). These ports are
¼” NPT and are located at 120 degree intervals.
The LOWER port is to be used for the barrier fluid oil
supply to the seal. Either of the TOP ports is used
for the return connection to the SPA.

2) Plumb connection from the port labeled “Seal
Supply” on SPA into the ports on bottom of seal
cartridge labeled “From SPA” (see figure 6)

3) Plumb connection between ports on seal cartridge
labeled “To SPA” and port on SPA labeled “Seal

4) Once plumbing is completed, fill SPA reservoir with

5) Close valve on seal return port on SPA. Slowly

Hazardous or toxic

fluids can cause

serious injury.

6) For the Plan 53 seal only: Connect the SPA to a

801-B00 Page 6/24

Return”. Unused remaining port labeled “To SPA”
on both seal cartridges must remain plugged.

barrier oil. Use recommended barrier oil “Conoco
Syncon Barrier Oil ISO grade 5” or equivalent.

pressurize SPA to approximately 10 PSI, slightly
open bleed valve on seal return line to allow trapped
air to escape system. Once oil is observed venting
from bleed valve, close bleed valve. The system is
now purged of air.

a. Note: this step may cause slight spillage of

the oil, so a drip-pan and/or absorbent
materials should be placed appropriately.
Once purged, tighten all fittings to prevent
leaks.

The Plan 53 seal design requires the
barrier fluid to be pressurized above
pump discharge pressure, at all times.
Failure to do so may result in primary
seal failure and product leakage.

tank of dry Nitrogen gas. SLOWLY allow the flow of
gas from the Nitrogen bottle to the SPA until the
SPA has an internal pressure 30 – 50 psi higher
than the maximum anticipated discharge pressure of
the system. See product specification for operating
limits. IMPORTANT NOTE: This step is very
important to provide proper seal performance. To
prevent leakage, barrier fluid pressure must remain
slightly higher than process fluid pressure at all
times. Failure to do so could cause the seal to open
and process fluid contamination into seal barrier
chamber. The seal may not properly reset once
pressure is restored. Let SPA pressure equalize
(approximately 2-5 minutes). SPA pressure should
remain constant.

a. If SPA pressure drops consistently, this

indicates that there is a leak in the system.
Check connections on gas side of SPA. If
no leaks are evident in SPA or piping
connections, the leak is most likely internal
to the seal and the pump should be
removed and replaced.

b. If the barrier oil pressure drops below

process pressure, the oil must be replaced.
Take care to contain any emissions from oil
when draining SPA. Wear proper
protection against exposure to pumped
product.

MOTOR DRIVEN PUMPS - INSTALLATION AND OPERATION

7) Connect and set the pressure switch to a set-point
approx. 10-30 psi above the system process
pressure. Ensure the switch is set at a pressure
between the Nitrogen set point and the max
anticipated discharge pressure. This pressure

switch should be wired to a panel or warning light or
alarm to prevent a decrease in barrier fluid pressure
below the pressure of the process fluid. This would
prevent process fluid from ever escaping into the
intra-seal cavity and potentially to atmosphere.

Figure 7 Plan 52 Pressure Switch Installation

Dual Seal designs require sensing
devices to monitor seal performance
and detect leakage. Failure to properly
install sensing devices may result in

Hazardous or toxic

fluids can cause

serious injury.

8) A sensing device is required to ensure that
process fluid does not escape pump in case of
seal failure. If the seal fails, the barrier fluid
pressure and the barrier fluid level in the SPA
will drop. A pressure switch or a liquid level
switch may be used to sense these conditions
and the system should then be shut down to
prevent product leakage to atmosphere.

9) For the Plan 52 Seal only: Ensure the SPA tank is
vented to atmosphere through an orifice. The vapor
space of the Seal Pot should be open atmospheric
pressure during operation. The tank should be kept
below discharge pressure of the pump, at all times.
This includes during periods of non-operation. If the
SPA tank pressure exceeds discharge pressure, the
outer seal can open and may cause contamination of
barrier oil into system. The seal may not reseat
once pressure is dropped.

10) Close the SPA tank vent and slowly allow the pump
to fill with the pumping fluid while monitoring the SPA
tank pressure and barrier oil level (if possible). If the
barrier oil pressure or level increases, there is a seal
leak and the pump should be removed from service
and replaced.

11) Connect and set a pressure switch to a set-point of
approx. 10 psig. This pressure switch should be
wired to a panel or warning light or alarm to prevent
the barrier pressure from exceeding the process
pressure. This would prevent barrier fluid leaking into
the system or process fluid from contaminating the
barrier oil due to the outer seal opening.

Note: A suitable orifice should be installed inline.
This will allow a leak to be detected by
increasing the SPA tank pressure. Under normal
operation vapor emissions should be properly
contained and disposed (e.g. flared off).

product leakage.

Hazardous or toxic

fluids can cause

serious injury.

12) A sensing device is required to ensure that

INSTALLATION AND CONNECTION:

13) The following is a checklist for completion prior to

Having completed these steps and the checklist above, the
pump should be ready for operation.

801-B00 Page 7/24

Dual Seal designs require sensing
devices to monitor seal performance
and detect leakage. Failure to properly
install sensing devices may result in
product leakage.

process fluid does not escape pump in case of
seal failure. If the seal fails, the barrier fluid
pressure and the barrier fluid level in the SPA
will increase. A pressure switch or a liquid level
switch must be used to sense these conditions
and the system should then be shut down to
prevent product leakage to atmosphere.

operation of the pump:
 All plumbing connected, 1 barrier fluid supply line
to each side of pump and one return line to each

side of pump.

 All air has been bled out of system.
 Bleed valve shut. Seal supply and Seal return

valves open.
 Pressure of barrier fluid system is 30 – 50 psi
above process pressure for the Plan 53 Seal or at 0
psig for the Plan 52 Seal.
 Once pressurized, the nitrogen pressure supply to
the SPA is shut off for the Plan 53.

 SPA pressure is constant.
 There are no barrier fluid leaks in the

tubing/piping/hoses.
 Open pump inlet valve and ensure no process
fluid leakage.

 Open pump discharge valve
 During operation, pressure in the barrier fluid

system (SPA) stays constant.

MOTOR DRIVEN PUMPS - INSTALLATION AND OPERATION

Pumps operating against a closed valve
can cause system failure, personal
injury and property damage

Hazardous pressure

can cause personal

injury or property

damage

V-BELT DRIVE

1. For installation of Blackmer V-belt units, first mount
the pump and the motor base to the unit base. Do not
fully tighten the motor mounting bolts until properly
installing and adjusting the belts as follows:

2. Wipe the cone surface of the pump QD hub (152A)
and the inside of the pump sheave hub with a clean
cloth moistened with a light grade of machine oil. This
will allow for a more uniform draw and prevent the
cone surfaces from “freezing” before being tightened.

3. With the pump shaft key (35) in place, align the key
seat and slide the QD hub (152A) on the shaft, flange
end first. Slide the large end of the sheave (152) bore
over the taper on the QD hub. Insert the three sheave
capscrews (152G) through the clearance holes in the
sheave, and start them into the tapped holes of the
QD hub (152A). Repeat this procedure to assemble
the motor QD hub (152E) and sheave (152D).

4. To install the belts (181), shorten the center distance
of the drive by moving the motor towards the pump,
until the belts can be put on the sheaves (152 &
152D) without forcing.

5. Align the sheaves so that the faces are parallel, then
snug up the sheave capscrews (152C & G).

6. Measure the span length as shown in Figure 8.

Figure 8 - V-Belt Adjustment

7. Adjust the motor base (183) and apply a specified
force (see Table 1) against the belt, at the center of
the span, so that the belt is deflected 1/64 inch (0.04
mm) for every inch (25.4 mm) of span. For example,
the deflection of a 20 inch (508 mm) span would be
20/64 or 5/16 inch (7.9 mm). The force required
should be within the range given in Table 1 for a
properly tensioned drive. A new set of belts should be
initially tensioned to the upper limit.

SMALL SHEAVE
OUTSIDE DIAMETER

2.5” to 4.5”

(63 mm to 114 mm)

4.75” to 7.0”

(121 mm to 178 mm)

Table 1 - Deflection Force Per Belt

8. Check again to ensure the sheaves (152 & 152D) are
parallel, then tighten the sheave capscrews (152C &
152G), the motor mounting nuts (183B) and the
adjusting screw locknut (183B).

9. Assemble the belt guard (182) and the belt guard
brace (182A) to the unit base (32).

BELT DEFLECTION
FORCE

Minimum Maximum

3.0 lbs
(1.4 kgs)

4.0 lbs
(1.8 kgs)

4.75 lbs
(2.2 kgs)

6.0 lbs
(7.7 kgs)

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

Do not operate

without guard

in place

10. Check the belt tension after 24-48 hours of operating.
Recheck the tension periodically and tighten the belts
as required. DO NOT overtighten belts. Inspect belts
periodically for signs of excessive wear, and replace
as required.

V-BELT DISASSEMBLY

1. Remove the belt guard (182) and the guard base (182A).
Loosen the adjusting screw locknut (183B) on the motor
base (183) and the motor mounting nuts.

2. Ease the tension on the belts (181) by moving the motor
towards the pump to shorten the center distance of the
drive. Remove the belts by sliding them over the sheaves
(152 & 152D). DO NOT force the belts over the grooves.

3. To remove the sheave from the hub, first remove the three
sheave capscrews (152C or 152G). Then screw two of the
capscrews into the threaded holes in the sheave hub
(152A or E). If the cone grip is hard to break loose, tap the
end of the shaft or the QD hub with soft-faced mallet while
maintaining pressure on the screw.

4. The QD hub should slide smoothly off the shaft. If it is tight
on the shaft, gently pry it loose with a screwdriver or a
small wedge placed in the split part of the flange.

5. Refer to Blackmer V-Belt Parts List and Instructions
for V-belt drive and guard part numbers.

801-B00 Page 8/24

MOTOR DRIVEN PUMPS - INSTALLATION AND OPERATION

PRE-START UP CHECK LIST

1. Inspect complete piping system and supports to ensure
that no piping loads are being placed on the pump.

2. Verify proper coupling or V-belt alignment.

3. Install pressure gauges in the 1/4" NPT intake and
discharge ports located on the pump casing to check
pump performance after start-up.

4. Ensure all valves and fittings in piping system are in the
start-up or operating positions.

5. Jog the pump motor to verify proper pump rotation.

START UP PROCEDURES

NOTICE:

Consult the "Troubleshooting" sections of this manual if
difficulties during start up are experienced.

1. If dual seals are installed, check that all instructions for
seal barrier installation have been completed and that
barrier system is pressurized to 30-50 psi above
maximum expected working pressure (Plan 53) or no
greater than 10 psig (Plan 52).

2. SLOWLY build pressure in the pump.

3. Start the motor.

4. Check pressure gauges to ensure the system is
operating within expected parameters. Record the gauge
readings in the "Initial Start Up Information" section of
this manual for future reference.

5. Inspect piping, fittings, and associated system equipment
for leaks, noise, vibration and overheating.

6. If dual seals are installed, check barrier system pressure
and shut off pump if barrier pressure drops continuously,
which would indicate a seal leak.

7. Check the flow rate to ensure the pump is operating
within the expected parameters. Record flow rate in the
“Initial Start Up” section of this manual.

8. Close the discharge valve and check the differential
pressure across the pump. Pressure must not exceed the
pressure setting of the external bypass valve.

9. If dual seals are installed, recheck barrier pressure and
shut pump off if barrier pressure drops continuously,
which would indicate a seal leak.

10. With the discharge valve still closed, momentarily close
the manual shut-off valve in the bypass return line to
check the pump internal relief valve. The differential
pressure will be approximately 150 and 170 PSI (10.3
and 11.7 bar).

11. The external bypass valve must always be set at least
25 PSI (1.7 bar) lower than the internal pump relief valve.
NOTE: The normal operating pressure must be at least
5 - 15 PSI (0.3 -1.0 bar) less than the external bypass
valve setting. Pump speeds which result in higher
pressures (nearing the valve setting) forces the liquid to
recirculate, creating excessive wear on the pump and
equipment.

Hazardous pressure

can cause personal

injury or property

damage

Hazardous pressure

can cause personal

injury or property

damage

Hazardous pressure

can cause personal

injury or property

damage

Pumps operating against a closed
valve can cause system failure,
personal injury and property damage

Pumps outfitted with a plan 53 seal
must have pressurized barrier oil
above pump discharge pressure at all
times. Failure to do so can result in
fluid leakage and barrier system
contamination.

Failure to set the vehicle emergency
brake and chock wheels before
performing service can cause severe
personal injury or property damage.

801-B00 Page 9/24

TRUCK MOUNTED PUMPS - INSTALLATION AND OPERATION

NOTICE:

Consult the "General Installation and Operation" section
of this manual for system information.

TRUCK MOUNTING

SGL pumps can be bolted to the truck frame or on a saddle
hung below the frame, and MUST be adequately supported.

PUMP DRIVE

The pump may be driven by a power take-off through
universal joints. When using universal joints, a splined slip
joint, properly lubricated, must be used on the connecting jack
shaft to prevent end thrust on the pump shaft. It is very
important to install a proper drive line to avoid excessive
wear, vibration and noise (see Fig. 9 and Table 2).

General guidelines to follow for proper pump drive:

1. Do not use square slip joints.

2. Use the least number of jack shafts as is practical.

3. Use an even number of universal joints.

4. The pump shaft and power take-off shaft must be parallel
in all respects. Use an angular level measuring device to
ensure the PTO and pump shaft are parallel to each
other. If necessary, the pump can be shimmed to correct
any misalignment. The PTO shaft coming off at the trans­mission does not need to be perfectly horizontal as long
as the pump is shimmed to have its shaft parallel in all
respects to the PTO shaft.

5. The yokes of the universals at both ends of the jack shaft
must be parallel and in phase.

6. The maximum recommended angle between the jack
shaft and the pump shaft is 15 degrees. See Table 2.

Failure to follow any of these guidelines may result in a gallop
or uneven turning of the pump rotor, which will in turn cause a
surging vibration to the liquid stream and piping system.
Contact the supplier of the drive line components for specific
design assistance.

Angle of Drive Shaft

1° through 5° 6° through 10° 11° through 15°

Very good Good Fair

Table 2

HYDRAULIC DRIVE

Truck mounted pumps may also be driven hydraulically.
Hydraulic motors should be well supported with their shafts
parallel to the pump shaft in all respects. Blackmer provides
an optional close-coupled hydraulic motor adapter. The
adapter provides for straight alignment of a hydraulic motor
drive through a solid coupling connected to a straight key
pump shaft. This coupling connection requires grease
lubrication every three months at minimum. See the
"Lubrication" section of this manual.

Operation without shaft protector can
cause serious personal injury, major
property damage, or death.

Do not operate

without guard

in place

A drive shaft guard between the PTO
and pump must be provided to prevent
personal injury, property damage, or

Do not operate

without guard

in place

Note: A Drive Shaft Guard between the pump and the

death.

PTO MUST be provided. (Not Shown)

Figure 9 – Pump Drive

801-B00 Page 10/24

TRUCK MOUNTED PUMPS - INSTALLATION AND OPERATION

PRE-START UP CHECK LIST

1. Install pressure gauges in the 1/4" NPT ports located on
the pump casing. These can be used to check the actual
inlet and discharge conditions after pump start-up.

2. Check the alignment of the pipes to the pump. Pipes
must be supported so that they do not spring away or drop
down when the pump flanges or union joints are
disconnected.

3. Secure appropriate hose connections.

START UP PROCEDURES

NOTICE:

Consult the "General Pump Troubleshooting" section of
this manual if difficulties during start up are experienced.

Pumps operating against a closed valve
can cause system failure, personal
injury and property damage

Hazardous pressure

can cause personal

injury or property

damage

9. With the discharge valve still closed, momentarily close the
manual shut-off valve in the bypass return line to check the
internal pump relief valve. The differential pressure should
be about 100 PSI (6.9 bar).

10. The external bypass valve must always be set at least
25 PSI (1.7 bar) lower than the pump internal relief valve.
NOTE: The normal operating pressure must be at least
5 - 15 PSI (0.3 - 1.0 bar) less than the external bypass
valve setting. Pump speeds which result in higher
pressures (nearing the valve setting) forces the liquid to be
recirculated, creating excessive wear on the pump and
equipment.

PUMP SPEED

PTO and hydraulically driven units MUST contain speed
control devices to prevent pump speeds above the maximum
RPM specifications, regardless of the truck engine unloading
speeds. Should fluid delivery be appreciably less than
expected, see the "Troubleshooting" section.

1. Open the shut-off valve in the bypass return line.

2. If the tank outlet valve is:
a. Lever Operated - Pull the control knob all the way

out. Manually check the lever under the truck to see
that it is in the completely OPEN position.

b. Discharge Pressure Operated - Keep the discharge

line valve closed. When pump is started, it will build up
enough pressure to open the tank outlet valve. NOTE:
This type of valve usually requires approximately 20
PSI (1.4 bar) differential pressure to open and
approximately 15 PSI (1.0 bar) differential pressure to
keep it open. If the piping is quite large, it may be
necessary to restrict the discharge line shut-off valve
in order to maintain sufficient pressure to keep the
tank outlet valve open.

3. Start the pump. Confirm proper pump rotation by checking

the pump rotation arrows.

4. Check the pump speed. Pump speed must never exceed

the recommended maximum. See “Technical Data” section
of this manual.

5. Check the pressure gauges to ensure the system is

operating within expected parameters. Record the gauge
readings in the "Initial Start Up Information" section of this
manual for future reference.

6. Inspect piping, fittings, and associated system equipment

for leaks, noise, vibration and overheating.

7. Check the flow rate to ensure the pump is operating within

the expected parameters. Record the flow rate in the “Initial
Start Up Information” section of this manual for future
reference.

8. Close the discharge valve and check the differential

pressure across the pump. It must not exceed the pressure
setting of the external bypass valve.

801-B00 Page 11/24

MAINTENANCE

Failure to set the vehicle emergency
brake and chock wheels before
performing service can cause severe

Hazardous
machinery can
cause serious

personal injury.

personal injury or property damage.

Hazardous voltage.
Can shock, burn or

cause death.

Failure to disconnect and lockout
electrical power or engine drive before
attempting maintenance can cause

Hazardous
machinery can
cause serious

personal injury.

severe personal injury or death.

Hazardous or toxic

fluids can cause

serious injury.

Disconnecting fluid or pressure
containment components during pump
operation can cause serious personal

Hazardous pressure
can cause personal

injury or property

damage

injury or property damage.

Hazardous pressure

can cause serious
personal injury or

property damage

Failure to disconnect and lockout
electrical power before attempting
maintenance can cause shock, burns or
death.

If pumping hazardous or toxic fluids,
system must be flushed and
decontaminated, inside and out, prior to
performing service or maintenance.

Failure to relieve system pressure prior
to performing pump service can cause
serious personal injury or property
damage.

Systems with meters will still

be pressurized even after the hose is
emptied.

Notice:

Maintenance shall be performed by qualified technicians only,

following the appropriate procedures and warnings as presented in this manual.

STRAINERS

Strainers must be cleaned regularly to avoid pump starvation.
Schedule will depend upon the application and conditions.

LUBRICATION

NOTICE:

To avoid possible entanglement in moving parts do not
lubricate pump bearings, hydraulic adapter coupling,
gear reducer or any other parts while pump is running.

NOTICE:

If pumps are repainted in the field, ensure that the g rease
relief fittings (76A) are functioning properly after
painting. Do NOT paint them closed. Remove any
excess paint from the fittings.

Pump bearings and hydraulic motor couplings (if equipped)
must be lubricated every three months at a minimum. More
frequent lubrication may be required, depending on the
application and the operating conditions.

Pumps outfitted with dual seals should have their oil changed
after either 500 hours of operation or after any pressure event
that may have caused contamination. More frequent oil
changes may be required depending on application.

Recommended Grease:

Mobil® - Mobilgrease XHP222,
Exxon® - Ronnex MP Grease
or equivalent Lithium grease.

Recommended Barrier Oil

Conoco® Syncon Barrier Oil ISO grade 5

Greasing Procedure:

1. Remove the grease relief fittings (76A) from the bearing
covers (27) or hydraulic motor adapter (135).

2. SLOWLY apply grease with a hand gun until grease
begins to escape from the grease relief fitting port.
Discard excess grease in accordance with the proper
codes and regulations.

3. Replace the grease relief fittings (76A).

DO NOT over grease pump bearings. While it is normal for
some grease to escape from the grease tell-tale hole after
lubrication, excessive grease can cause mechanical seal
failure. The tell-tale hole is located in the head (20) between
the bearing (24) and the mechanical seal (153).

Barrier Oil Change Procedure

1. Evacuate pump of any fluid/vapor until a pressure of
0 psig is read in the pump.

2. Vent the barrier fluid tank until a pressure of 0 psig is
achieved.

Notice: A small amount of pumping fluid/gas
may have leaked into the barrier oil. Take the
proper precautions when venting.

3. Remove seal drain plugs from bottom of seal
cartridges (153)

4. Allow oil to drain from each seal and barrier pot.

5. Replace plugs and fill barrier pot, with new barrier
oil, to the seal pot manufacturer recommended
volume.

801-B00 Page 12/24

MAINTENANCE

VANE REPLACEMENT

NOTICE:

Maintenance shall be performed by qualified technicians
only, following the appropriate procedures and warnings
as presented in this manual.

1. Drain and relieve pressure from the pump and system as
required.

2. Remove the head assembly from the outboard (non­driven) side of the pump according to steps 4 - 7 in the
"Pump Disassembly" section of this manual.

3. Turn the shaft by hand until a vane (14) comes to the top
(12 o'clock) position of the rotor. Remove the vane.

4. Install a new vane (14), ensuring that the rounded edge is
UP, and the relief grooves are facing towards the direction
of rotation. See Figure 10.

5. Repeat steps 3 and 4 until all vanes have been replaced.

6. Reassemble the pump according to the "Pump
Assembly." section of this manual.

Figure 10 – Vane Installation

PUMP DISASSEMBLY

NOTICE:

Follow all hazard warnings and instructions provided in
the "Maintenance" section of this manual.

1. Drain and relieve pressure from the pump and system as
required.

2. Starting on the inboard (driven) end of the pump, clean
the pump shaft thoroughly, making sure the shaft is free of
nicks and burrs. This will prevent damage to the
mechanical seal when the inboard head assembly is
removed.

3. Remove the inboard bearing cover capscrews (28) and
slide the inboard bearing cover (27) and gasket (26) off
the shaft. Discard the bearing cover gasket. On 2-inch
models, the dirt shield will slide off with the bearing cover.

4. Remove the outboard bearing cover capscrews (28) and
slide the outboard bearing cover (27) and gasket (26) off
the shaft. Discard the bearing cover gasket.

801-B00 Page 13/24

5. To remove locknuts and lockwashers (24A and 24B):
a. Bend up the engaged lockwasher tang and rotate

the locknut (24A) counterclockwise to remove it from
the shaft

b. Slide the lockwasher (24B) off the shaft. Inspect the

lockwasher for damage and replace as required.

c. Repeat steps a and b on the opposite shaft end.

For Single Seal Pump Follow Steps 6 – 11,
For Double Seal Pump Skip to Step 12

Single Seal Disassembly

6. Remove the head capscrews (21) and carefully pry the

head (20) away from the casing (12).

7. Slide the head (20) off the shaft. The head O-ring (72),

bearing (24), mechanical seal stationary seat and
stationary O-ring (153A & 153D) will come off with the
head assembly. On 4-inch models, the disc and rotating
seal assembly will also come off with the head assembly.
Remove and discard the head O-ring.

a. 4-inch models: Remove the four disc machine

screws and lockwashers (71A & 71B) to release the
disc (71) from the head (20). The mechanical seal
rotating assembly (153B, 153C & 153E) will be
released when the disc is removed.

b. Pull the bearing (24) from the housing in the head

(20).

c. To remove the mechanical seal stationary seat

(153A), use the blunt end of a screw driver to gently
push the backside of the stationary seat from the
head. Place a cloth under the seal to avoid damage.
Be careful not to contact the polished face of the
seal during removal. Remove and discard
mechanical seal stationary O-ring.

8. 2 and 3-inch models: Carefully pull the rotating seal

assembly, including the seal jacket, rotating seal face and
O-ring (153C, 153B, 153E) from the shaft. Remove and
discard the rotating O-ring. Remove the disc (71).

NOTICE:

The rotor and shaft weighs 34 - 69 pounds (15 ­31 kg). Be careful not to pinch the hand under
the rotor and shaft when removing from casing.

9. Carefully pull the rotor and shaft (13) from the casing (12).

While one hand is pulling the shaft, cup the other hand
underneath the rotor to prevent the vanes (14) and push
rods (77) from falling out. Carefully set the rotor and shaft
aside for future vane replacement and reassembly.

10. Lay the pump flat with the remaining head (20) facing

upward to remove the head assembly mechanical seal
(153) and disc (71) from the outboard side of the pump,
per steps 6 - 8 above.

11. If necessary, remove the liner (41) by tapping around the

outside diameter of the liner with a hard wood drift and a
hammer until it is driven from the casing (12).

MAINTENANCE

Dual Seal Disassembly – Plan 53

12. Remove seal cartridge capscrews (21A) and insert two of
these capscrews into threaded holes on seal cartridge.
Use the protruding capscrews as handles and pull seal
cartridge assembly (153) away from pump housing (12).
Bearing (24) will remove with seal cartridge assembly
(153). If bearing is not free from the shaft, the three
threaded holes on seal cartridge can be used as
jackscrews to remove bearing from shaft.

13. Remove the head ring capscrews (21) and carefully pry
the head ring (20A) away from the casing (12). Take care
not to damage head ring or casing

14. Slide the head ring (20A) off the shaft. The head O-ring
(72), will come off with the head assembly. Remove and
discard the head O-ring.

a. With one swift motion, pull the bearing (24) from the

housing in the seal cartridge assembly (153).

b. Remove and discard seal cartridge O-ring (153F).

15. Carefully pull the rotor and shaft (13) from the casing (12).
While one hand is pulling the shaft, cup the other hand
underneath the rotor to prevent the vanes (14) and push
rods (77) from falling out. Carefully set the rotor and shaft
aside for future vane replacement and reassembly.

NOTICE:

The rotor and shaft weighs 34 - 69 pounds (15 ­31 kg). Be careful not to pinch the hand under
the rotor and shaft when removing from
casing.

16. Lay the pump flat with the remaining head (20) facing
upward to remove the head assembly mechanical seal
(153) and disc (71) from the outboard side of the pump,
per steps 6 - 8 above.

17. If necessary, remove the liner (41) by tapping
around the outside diameter of the liner with a hard
wood drift and a hammer until it is driven from the
casing (12).

Dual Seal Disassembly – Plan 52

18. Remove seal cartridge capscrews (21A) and insert two of
these capscrews into threaded holes on seal cartridge.
Use the protruding capscrews as handles and pull seal
cartridge assembly (153) away from pump housing (12).
Bearing (24) will remove with seal cartridge assembly
(153). If bearing is not free from the shaft, the three
threaded holes on seal cartridge can be used as
jackscrews to remove bearing from shaft.

19. Remove the head capscrews (21) and head (20).

20. Remove 6 socket head capscrews from the rotating face.
See Figure 11 for details. Discard screws, they should not
be reused.

21. With 2 small pry bars, carefully remove rotating face from
rotor/shaft (13)

22. Skip to Assembly – Dual Seal Plan 52

23. Turn pump over and complete disassembly (steps 18-22)
for the other side

Figure 11 – Rotating Face Disassembly

801-B00 Page 14/24

MAINTENANCE

PUMP ASSEMBLY – Single Seal

Before reassembling the pump, inspect all component parts
for wear or damage; replace as required. Wash out the
bearing/seal recess of the head and remove any burrs or
nicks from the rotor and shaft, and liner.

Reassemble the OUTBOARD side of the pump first:

1. Apply a small amount of grease to the liner key (74) to
hold the key in place during liner installation. Install the
liner key (74) in the groove on top of the liner (41).

2. Align the liner key (74) with the pump casing keyway and
start the liner (41) into the casing (12). The word
‘INTAKE’ cast on the liner must face the intake port of the
pump casing. Uniformly tap the outer edge of the liner
with a rubber mallet to fully insert into the casing. NOTE:
If the liner is installed backwards, it will restrict the port
openings and cause cavitation, noise and loss of
capacity.

3. 2 and 3-inch models: Place the disc (71) against the liner
with the seal cavity outward.

4-inch models: Attach the disc (71) to the outboard head
without the mechanical seal components. Install the disc
machine screws (71A) and lockwashers (71B).

4. Without installing head O-ring or mechanical seal
components, temporarily attach the outboard head and
bearing to the casing. Install and hand-tighten two head
capscrews, 180 degrees apart. This head will be used to
hold and align the rotor and shaft while the inboard side
of the pump is assembled.

5. Remove the vanes (14) and push rods (77) from the rotor
and shaft assembly. Inspect for wear and damage, and
replace as follows:

a. Insert the vanes into the bottom three rotor slots with

the relief grooves facing in the direction of pump
rotation, and with the rounded edges outward. See
Figure 10.

b. Hold the three bottom vanes I place while inserting

the three push rods (77). See Figure 12.

c. Carefully insert the non-driven end of the rotor and

shaft (13) into the pump casing (12).

d. Install the remaining vanes (14) into the top positions

of the rotor.

Figure 12 – Pushrod Installation

6. DISC – 2 and 3-inch pumps

Install the disc (71) on the inboard side of the pump with
the seal cavity facing outward and the disc relief hole
located as shown in Figure 13.

Figure 13 - Disc Relief Hole Location (2 and 3” pumps)

7. MECHANICAL SEAL – 2 and 3-inch pumps

Rotating Assembly –

a. Apply a small amount of motor oil on the shaft

between the shaft threads and the rotor.

b. Slide the seal jacket assembly (153C) over the shaft

and into the disc cavity with the drive tangs of the
jacket towards the rotor. Rotate the jacket assembly
to engage the drive tangs in the rotor slots.

c. Install a new rotating O-ring (153E) in the rotating

seal face (153B). Align and insert the rotating
assembly into the seal jacket with the polished face
outward. Clean the polished face with a clean tissue
and alcohol.

Stationary Seat -

a. Apply a small amount of motor oil in the seal recess

of the head (20).

b. Install a new stationary O-ring (153D) in the

stationary seat (153A). Align the pin in the stationary
seat with the slot in the head recess and push the
seat fully into the seal recess with the polished face
outward. Clean the polished face with a clean tissue
and alcohol.

8. MECHANICAL SEAL – 4-inch pumps

Stationary Seat -

a. Apply a small amount of motor oil in the seal recess

of the head (20).

b. Install a new stationary O-ring (153D) in the

stationary seat (153A). Align the pin in the stationary
seat with the slot in the head recess and push the
seat fully into the seal recess with the polished face
outward. Clean the polished face with a clean tissue
and alcohol.

Rotating Assembly –

a. Install a new rotating O-ring (153E) in the rotating

seal face (153B). Clean the polished face with a
clean tissue and alcohol. Place the polished face of
the rotating seal against the face of the stationary
seat in the head recess.

b. Align the seal jacket assembly (153C) with notches

of the rotating face and install jacket with the drive
tangs of the jacket outward.

801-B00 Page 15/24

MAINTENANCE

9. DISC – 4-inch pumps

Place the disc (71) against the head (20) with the seal
cavity inward and the disc relief hole located so that when
the head is mounted on the pump with the “Blackmer”
name in an upright position, the disc relief hole will be at
the pump intake, (see Figure 13). Install and tighten the
disc machine screws and lockwashers (71A and 71B).
The drive tangs of the seal jacket should protrude through
the center hole of the disc.

Figure 14 - Disc Relief Hole Location (4” pumps)

10. Install a new head O-ring (72) in the groove on the inside
face of the head (20). Lay the O-ring flat and start in on
one side of the groove, stretching ahead with the fingers,
as shown in Figure 15.

Figure 15 – Head O-ring Installation

11. Carefully install the head assembly (20) on the pump
casing (12). Rotate the head so that the drain hole,
located at the back of the bearing cavity, faces downward
when the pump is mounted for operation. Install and
uniformly tighten four head capscrews (21) 90°
torque to 30 lbs ft (40.7 Nm).

4-inch pumps: Make sure the head is mounted with the
‘Blackmer’ name upright and the disc relief hole towards
the intake side of the pump. The seal jacket drive tangs
must be engaged in the rotor slots

12. Hand pack the ball bearing (24) with grease. See the
"Lubrication" section for recommended greases.

13. Install the bearing (24) into the head recess. The bearing
balls should face outward, with the grease shield inward.
Ensure the bearing is fully and squarely seated in the
head (20).

14. Turn the pump casing around and remove the outboard
head and disc previously installed.

15. Install the outboard head, O-ring (72), mechanical seal
(153), disc (71) and bearing (24) per steps 7 through 14.

apart;

16. Rotate the shaft by hand to engage the mechanical seal
drive tangs, and to test for binding or tight spots. If the
rotor does not turn freely, lightly tap the rims of the heads
with a soft faced mallet until the correct position is found.
Install the remaining head capscrews (21) for each head
(20) and uniformly torque to 30 lbs ft (40.7 Nm).

17. LOCKNUT ADJUSTMENT
It is important that the bearing locknuts (24A) and
lockwashers (24B) be installed and adjusted properly.
Overtightened locknuts can cause bearing failure or a
broken lockwasher tang. Loose locknuts will allow the
rotor to shift against the discs (71), causing wear. See
Figure 16.

a. On both ends of the pump shaft, Install a lockwasher

(24B) with the tangs facing outward, followed by a
locknut (24A) with the tapered end inward. Ensure the
inner tang "A" of the lockwasher is located in the slot in
the shaft threads, bending it slightly, if necessary.

b. Tighten both locknuts (24A) to ensure that the bearings

(24) are bottomed in the head recess. DO NOT
overtighten and bend or shear the lockwasher inner

tang.
c. Loosen both locknuts one complete turn.
d. Tighten one locknut until a slight rotor drag is felt when

turning the shaft by hand.
e. Back off the nut the width of one lockwasher tang "B".

Secure the nut by bending the closest aligned

lockwasher tang into the slot in the locknut. The pump

should turn freely when rotated by hand.
f. Tighten the opposite locknut (24A) by hand until it is

snug against the bearing (24). Then, using a spanner

wrench, tighten the nut the width of one lockwasher

tang. Tighten just past the desired tang, then back off

the nut to align the tang with the locknut slot. Secure

the nut by bending the aligned lockwasher tang into

the slot in the locknut. The pump should continue to

turn freely when rotated by hand.
g. To check adjustment, grasp the nut and washer with

fingers and rotate back and forth. If this cannot be

done, one or both locknuts are too tight and should be

alternately loosened one stop at a time (.001" – 25

microns). Begin by loosening the locknut adjusted last.

18. Inspect the grease seal (104) for wear or damage and
replace as required. Grease the outside diameter of the
grease seal and push it into the inboard bearing cover
(27) with the lip of the seal inward.

Figure 16 - Locknut Adjustment

801-B00 Page 16/24

MAINTENANCE

19. Attach a new bearing cover gasket (26) and the bearing
cover (27) to the inboard head (20). Make sure the
grease fittings (76) are accessible. Install and torque the
bearing cover capscrews (28) to 30 lbs ft (40.7 Nm).

20. Install the grease seal (104) and bearing cover (27) on
the opposite side of the pump per steps 19 - 20.

21. 2-inch pumps: Slide the dirt shield (123A) over the shaft
and push it firmly against the inboard bearing cover.

22. Attach the shaft protector (186) to the non-driven shaft
end of double ended pumps.

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

Do not operate

without guard

in place

23. RELIEF VALVE ASSEMBLY

a. Insert the valve (9) into the relief valve bore of the

casing with the fluted end (2 and 3-inch pumps) or
stepped bore end (4” pumps) inward.

b. Install the relief valve spring (8) and spring guide (7)

against the valve.

c. Attach a new relief valve O-ring (10) and the valve

cover (4) on the cylinder.

d. Screw the relief valve adjusting screw (2) with locknut

(3) into the valve cover (4) until it makes contact with
the spring guide (7).

e. After the relief valve has been adjusted, tighten the

locknut (3) and install the relief valve cap (1) and O­ring (88)

NOTICE:
The relief valve setting MUST be tested and
adjusted more precisely before putting the pump
into service. Refer to "Relief Valve Setting and
Adjustment"

24. See "Pre-Start Up Check List" and "Start Up
Procedures" sections of this manual prior to restarting
pump operation.

801-B00 Page 17/24

MAINTENANCE

PUMP ASSEMBLY – Dual Seal (Plan 53)

Before reassembling the pump, inspect all component parts
for wear or damage; replace as required. Wash out the
bearing/seal recess of the head and remove any burrs or
nicks from the rotor and shaft, and liner.

Reassemble the OUTBOARD side of the pump first:

1. Apply a small amount of grease to the liner key (74) to
hold the key in place during liner installation. Install the
liner key (74) in the groove on top of the liner (41).

2. Align the liner key (74) with the pump casing keyway
and start the liner (41) into the casing (12). The word
‘INTAKE’ cast on the liner must face the intake port of
the pump casing. Uniformly tap the outer edge of the
liner with a rubber mallet to fully insert into the casing.
NOTE: If the liner is installed backwards, it will restrict
the port openings and cause cavitation, noise and loss
of capacity.

3. Install a new head O-ring (72) in the groove on the
inside face of the head ring (20A). Lay the O-ring flat
and start in on one side of the groove, stretching ahead
with the fingers, as shown in Figure 15.

4. Place the head ring (20A) against the liner with the seal
pressure groove in the 3:00 position toward the
discharge (see Figure 17).

Figure 17 Groove placement

5. Attach the outboard head to the casing. Install and
hand-tighten four head capscrews (21), 90 degrees
apart.

6. Remove the vanes (14) and push rods (77) from the
rotor and shaft assembly. Inspect for wear and damage,
and replace as follows:

a. Insert the vanes into the bottom three rotor slots with

the relief grooves facing in the direction of pump
rotation, and with the rounded edges outward. See
Figure 10.

b. Hold the three bottom vanes I place while inserting

the three push rods (77). See Figure 12.

c. Carefully insert the non-driven end of the rotor and

shaft (13) into the pump casing (12).

d. Install the remaining vanes (14) into the top positions

of the rotor.

7. Install a new head O-ring (72) in the groove on the
inside face of the inboard head ring (20A). Lay the O­ring flat and start in on one side of the groove,
stretching ahead with the fingers, as shown in Figure

15.

8. Attach the inboard head ring (20A) to the casing per
step 4. Groove should be toward the discharge port.
Install and hand-tighten four head capscrews (21), 90
degrees apart.

801-B00 Page 18/24

9. MECHANICAL SEAL – Dual Seal (Plan 53)

Rotating Assembly

a. Apply a small amount of motor oil on the shaft

between the shaft threads and the rotor.

b. Install a new rotating O-ring (72B) on the seal

cartridge and place in corner up against mounting
face. (see figure 18)

Figure 18 - Seal Cartridge O-ring Position

c. Slide the seal cartridge assembly (153) over the shaft

and into the head ring cavity with the drive tangs of
the jacket towards the rotor. Rotate the jacket
assembly to engage the two drive tangs in the two
drive slots in the rotor near the shaft. When the drive
tangs are properly engaged, you can feel the positive
stops when the seal is rotated in relation to the shaft.
The seal will only freely move for a very small angle
before the rotor is likewise engaged. Before installing
capscrews, turn the seal cartridge (153) so there is
one seal feed hole in the 6:00 position toward the
pump feet.

d. Hand pack the ball bearing (24) with grease. See the

"Lubrication" section for recommended greases.

e. Install the bearing (24) into the seal cartridge recess

over shaft. The bearing balls should face outward,
with the grease shield inward. Ensure the bearing is
fully and squarely seated in the seal cartridge (153).

f. Install Seal cartridge capscrews (22) and tighten to 30

ft-lbs (40.7 Nm)

10. Install the outboard seal cartridge assembly (153) and
bearing (24) per steps 7a through 9. Rotate the shaft by
hand to engage the mechanical seal drive tangs, and to
test for binding or tight spots. If the rotor does not turn
freely, lightly tap the rims of the heads with a soft faced
mallet until the correct position is found. Install the
remaining head capscrews (21) for each head ring
(20A) and uniformly torque to 30 lbs ft (40.7 Nm).

MAINTENANCE

11. LOCKNUT ADJUSTMENT
It is important that the bearing locknuts (24A) and
lockwashers (24B) be installed and adjusted properly.
Overtightened locknuts can cause bearing failure or a
broken lockwasher tang. Loose locknuts will allow the
rotor to shift against the heads (20), causing wear.

a. On both ends of the pump shaft, Install a lockwasher

(24B) with the tangs facing outward, followed by a
locknut (24A) with the tapered end inward. Ensure the
inner tang "A" of the lockwasher is located in the slot
in the shaft threads, bending it slightly, if necessary.

b. Tighten both locknuts (24A) to ensure that the

bearings (24) are bottomed in the head recess. DO
NOT overtighten and bend or shear the lockwasher

inner tang.
c. Loosen both locknuts one complete turn.
d. Tighten one locknut until a slight rotor drag is felt

when turning the shaft by hand.
e. Back off the nut the width of one lockwasher tang "B".

Secure the nut by bending the closest aligned

lockwasher tang into the slot in the locknut. The pump

should turn freely when rotated by hand.
f. Tighten the opposite locknut (24A) by hand until it is

snug against the bearing (24). Then, using a spanner

wrench, tighten the nut the width of one lockwasher

tang. Tighten just past the desired tang, then back off

the nut to align the tang with the locknut slot. Secure

the nut by bending the aligned lockwasher tang into

the slot in the locknut. The pump should continue to

turn freely when rotated by hand.
g. To check adjustment, grasp the nut and washer with

fingers and rotate back and forth. If this cannot be

done, one or both locknuts are too tight and should

be alternately loosened one stop at a time (.001" – 25

microns). Begin by loosening the locknut adjusted

last.

14. Inspect the grease seal (104) for wear or damage and
replace as required. Grease the outside diameter of the
grease seal and push it into the inboard bearing cover
(27) with the lip of the seal inward.

15. Attach a new bearing cover gasket (26) and the bearing
cover (27) to the seal cartridge (153). Make sure the
grease fittings (76) are accessible. Install and torque the
bearing cover capscrews (28) to 30 lbs ft (40.7 Nm).

16. Install the grease seal (104) and bearing cover (27) on
the opposite side of the pump per steps 15-16.

17. 2-inch pumps: Slide the dirt shield (123A) over the shaft
and push it firmly against the inboard bearing cover.

18. Attach the shaft protector (186) to the non-driven shaft
end of double ended pumps.

19. RELIEF VALVE ASSEMBLY
a. Insert the valve (9) into the relief valve bore of the

casing with the fluted end (2 and 3-inch pumps) or
stepped bore end (4” pumps) inward.

b. Install the relief valve spring (8) and spring guide (7)

against the valve.

c. Attach a new relief valve O-ring (10) and the valve

cover (4) on the casing (21).

d. Screw the relief valve adjusting screw (2) with locknut

(3) into the valve cover (4) until it makes contact with
the spring guide (7).

e. After the relief valve has been adjusted, tighten the

locknut (3) and install the relief valve cap (1) and O-ring
(88)

NOTICE:
The relief valve setting MUST be tested and
adjusted more precisely before putting the pump
into service. Refer to "Relief Valve Setting and
Adjustment"

20. See "Pre-Start Up Check List" and "Start Up
Procedures" sections of this manual prior to restarting
pump operation

Do not operate

without guard

in place

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

801-B00 Page 19/24

MAINTENANCE

PUMP ASSEMBLY – Dual Seal (Plan 52)

Before reassembling the pump, inspect all component parts
for wear or damage; replace as required. Wash out the
bearing/seal recess of the cartridge and remove any burrs or
nicks from the rotor and shaft, and liner.

Reassemble the OUTBOARD side of the pump first.

1. Install ID O-ring into Rotating Seal Face. Lubricate with
compatible grease. See Figure 19.

Figure 19 – Plan 52 Rotating Seal Face Installation

2. Slide Rotating Seal Face onto Rotor/Shaft (13), while
making sure to align Rotor Seal Alignment Pin with
Rotating Seal Face hole. See Figure 17. Ensure that
ID O-ring is not damage as it slides over shaft threads.

3. Install Sealing Cap Screw into 6 holes. Start threading
screws by hand. Refer to Figure 11.

4. Tighten Sealing Cap Screws to 20 in-lbf. Tighten
screws in an alternating pattern, start and one side then
torque screw on the opposite side. Continue until all
screws are torqued.

5. Install Head Ring (20) onto casing, while ensuring not to
touch or damage Rotating Seal Face. Pressure feed
groove in Head Ring should be located near discharge
area of pump. See Figure 15.

6. Install Head Ring Capscrews (21) and torque to 30 ft­lbf.

7. Install Stationary Seal Assembly (153) into Head Ring
(20), making sure to carefully lower assembly in a
controlled manner; dropping the seal assembly may
damage carbons. See Figure 18.

8. Install Capscrew (22) into Stationary Seal Assembly
(153). Finger tighten screws.

9. Hand pack the ball bearing (24) with grease. See the
"Lubrication" section for recommended greases.

10. Install the bearing (24) into the seal cartridge recess
over shaft. The bearing balls should face outward, with
the grease shield inward. Ensure the bearing is fully and
squarely seated in the seal cartridge (153).

11. Install Lockwasher (24B) and Locknut (24A) onto
Rotor/Shaft.

12. Install the Inboard seal by following steps 1-11.

Figure 18 – Plan 52 Stationary Seal Assembly Installation

13. LOCKNUT ADJUSTMENT
It is important that the bearing locknuts (24A) and
lockwashers (24B) be installed and adjusted properly.
Overtightened locknuts can cause bearing failure or a
broken lockwasher tang. Loose locknuts will allow the
rotor to shift against the heads (20), causing wear.

a. On both ends of the pump shaft, make sure a

lockwasher is installed (24B) with the tangs facing
outward, followed by a locknut (24A) with the tapered
end inward. Ensure the inner tang "A" of the
lockwasher is located in the slot in the shaft threads,
bending it slightly, if necessary.

b. Tighten both locknuts (24A) to ensure that the

bearings (24) are bottomed in the head recess. DO
NOT overtighten and bend or shear the lockwasher

inner tang.
c. Loosen both locknuts one complete turn.
d. Tighten one locknut until a slight rotor drag is felt

when turning the shaft by hand.
e. Back off the nut the width of one lockwasher tang "B".

Secure the nut by bending the closest aligned

lockwasher tang into the slot in the locknut. The pump

should turn freely when rotated by hand.
f. Tighten the opposite locknut (24A) by hand until it is

snug against the bearing (24). Then, using a spanner

wrench, tighten the nut the width of one lockwasher

tang. Tighten just past the desired tang, then back off

the nut to align the tang with the locknut slot. Secure

the nut by bending the aligned lockwasher tang into

the slot in the locknut. The pump should continue to

turn freely when rotated by hand.
g. To check adjustment, grasp the nut and washer with

fingers and rotate back and forth. If this cannot be

done, one or both locknuts are too tight and should

be alternately loosened one stop at a time (.001" – 25

microns). Begin by loosening the locknut adjusted

last.

14. Inspect the grease seal (104) for wear or damage and
replace as required. Grease the outside diameter of the

801-B00 Page 20/24

grease seal and push it into the inboard bearing cover
(27) with the lip of the seal inward.

15. Attach a new bearing cover gasket (26) and the bearing
cover (27) to the seal cartridge (153). Make sure the
grease fittings (76) are accessible. Install and torque the
bearing cover Capscrews (28) to 30 lbs ft (40.7 Nm).

16. Install the grease seal (104) and bearing cover (27) on
the opposite side of the pump per steps 15-16.

17. 2-inch pumps: Slide the dirt shield (123A) over the shaft
and push it firmly against the inboard bearing cover.

18. Attach the shaft protector (186) to the non-driven shaft
end of double ended pumps.

Operation without guards in place can
cause serious personal injury, major
property damage, or death.

Do not operate

without guard

in place

19. RELIEF VALVE ASSEMBLY

f. Insert the valve (9) into the relief valve bore of the

casing with the fluted end (2 and 3-inch pumps) or
stepped bore end (4” pumps) inward.

g. Install the relief valve spring (8) and spring guide (7)

against the valve.

h. Attach a new relief valve O-ring (10) and the valve

cover (4) on the casing (21).

i. Screw the relief valve adjusting screw (2) with locknut

(3) into the valve cover (4) until it makes contact with
the spring guide (7).

j. After the relief valve has been adjusted, tighten the

locknut (3) and install the relief valve cap (1) and O-ring
(88)

NOTICE:
The relief valve setting MUST be tested and
adjusted more precisely before putting the pump
into service. Refer to "Relief Valve Setting and
Adjustment"

20. See "Pre-Start Up Check List" and "Start Up
Procedures" sections of this manual prior to restarting
pump operation

801-B00 Page 21/24

TROUBLESHOOTING

NOTICE:

Maintenance shall be performed by qualified technicians only, following the appropriate

procedures and warnings as presented in this manu al.

SYMPTOM PROBABLE CAUSE
Pump Not Priming

1. Pump not wetted.

2. Worn vanes.

3. Internal control valve closed.

4. Strainer clogged.

5. Inlet line or valves clogged or too restrictive.

6. Broken Drive Train (truck mounted pumps)

7. Pump vapor-locked.

8. Pump speed too low for priming.

9. Relief valve partially open, worn or not seating properly.

10. Vanes installed incorrectly (see "Vane Replacement").

Reduced Capacity

Noise

1. Pump speed too low.

2. Internal control valve not fully open.

3. Excessive restriction in the inlet line (i.e.: undersized piping, too many elbows &
fittings, clogged strainer, etc.).

4. Damaged or worn parts (vanes, cylinder, or rotor).

5. Excessive restriction in discharge line causing partial flow through the relief valve.

6. Relief Valve worn, set too low, or not seating properly.

7. External Bypass Valve set too low.

8. Operating without a vapor return line.

9. Vanes installed incorrectly (see "Vane Replacement").

10. Liner installed backwards.

1. Excessive pressure drop on the pump due to:
a. Undersized or restricted fittings in the inlet line.
b. Pump speed too fast.
c. Pump too far from fluid source.

2. Running the pump for extended periods with a closed discharge line.

3. Pump not securely mounted.

4. Improper drive line – truck mounted pumps (See “Pump Drive”).

5. Misalignment of pump, reducer, or motor - base mounted pumps.

6. Bearings worn or damaged.

7. Vibration from improperly anchored piping.

8. Bent shaft, or drive coupling misaligned.

9. Excessively worn rotor.

10. Malfunctioning valve in the system.

11. Relief valve setting too low.

12. Liner installed backwards.

13. Damaged vanes (see following category).

Damaged Vanes

1. Foreign objects entering the pump.

2. Running the pump dry for extended periods of time.

3. Cavitation.

4. Excessive heat.

5. Worn or bent push rods, or worn push rod holes.

6. Hydraulic hammer - pressure spikes.

7. Vanes installed incorrectly (see "Vane Replacement").

8. Incompatibility with the liquids pumped.

801-B00 Page 22/24

TROUBLESHOOTING … continued

SYMPTOM PROBABLE CAUSE
Broken Shaft

1. Foreign objects entering the pump.

2. Relief valve not opening.

3. Hydraulic hammer - pressure spikes.

4. Pump/driver, driveline/drive shaft misalignment.

5. Excessively worn vanes or vane slots.

Mechanical Seal Leakage

Overload on Motor

1. O-rings not compatible with the liquids pumped.

2. O-rings nicked, cut or twisted.

3. Shaft at seal area damaged, worn or dirty.

4. Bearings over greased.

5. Excessive cavitation.

6. Mechanical seal faces cracked, scratched, pitted or dirty.

1. Motor Horsepower not sufficient for application.

2. Improper wiring and/or low voltage to motor.

3. Misalignment

4. Excessive pressure or speed.

5. Bearing locknuts adjusted improperly.

6. Faulty or worn bearings.

7. Rotor rubbing against discs or liner.

8. Dirty mechanical seal faces.

801-B00 Page 23/24

Sliding Vane Pumps: 5 to 2200 GPM

Refined Fuels, Liquefied Gases, Solvents,Process

®

System One

Centrifugal Pumps

10 to 7500 GPM; Process, Marine

L 6, 8 & 10”

HX
Sliding Vane Pumps

130 to 2,220 GPM
Refineries

Terminals
Barges
Ships

Stainless Steel Sliding Vane Pumps

1 to 265 GPM: Acids, Brines, Sugars, Syrups,

Beer, Beet Juice, Cider, Flavor Extracts, etc.

Magnetic Drive Pumps

Stainless Steel: 14 to 215 GPM

Reciprocating Gas Compressors

Liquefied Gas Transfer, Boosting, Vapor Recovery

Hand Opera

Dispensing, Transfer, In-line

ted Pumps

Accessories

Gear Reducers, Bypass Valves, Strainers

Visit www.blackmer.com for complete information on all Blackmer products

1809 Century Avenue, Grand Rapids, Michigan 49503-1530 U.S.A.

Telephone: [phone] • Fax: [phone]

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