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BLACKMER LGRL1.25 - User Manual

BLACKMER LGRL1.25
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BLACKMER POWER PUMPS
960409
INSTRUCTIONS NO. 501-B00
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
MODELS: LGRL1.25, LGRLF1.25A, LGL1.25,
Section
Effective
Replaces
501
Aug 2014
Jan 2014
LGLF1.25A, LGL1.5, LGLF1.5A
Discontinued Models: LGRLF1.25, LGLF1.25
Patent Protected by U.S. Patent 6030191 and Related Foreign Patents.
TABLE OF CONTENTS Page
PUMP DATA
Technical Data ...................................................... 2
Initial Pump Start Up Information ........................... 2
INSTALLATION
Pre-Installation Cleaning ....................................... 3
Location and Piping ............................................... 3
Pump Relief Valve and Bypass valve .................... 3
Check Valves ........................................................ 4
Mounting ............................................................... 4
Motor Adaptors ...................................................... 4
Coupling Alignment ............................................... 4
Pump Rotation....................................................... 4
To Change Pump Rotation .................................... 4
OPERATION
Pre-Start Up Check List ......................................... 5
Start Up Procedures .............................................. 5
Relief Valve Setting and Adjustment ..................... 5
MAINTENANCE
Strainers ................................................................... 6
Lubrication ................................................................ 6
Vane Replacement ................................................... 7
Pump Disassembly .................................................. 7
Parts Replacement ................................................... 7
Pump Assembly ....................................................... 8
TROUBLE SHOOTING ................................................. 10
Numbers in parentheses following individual parts indicate
reference numbers on Blackmer Parts List No. 501-B01.
Blackmer pump manuals and parts lists may be obtained from
Blackmer's website (www.blackmer.com) or by contacting
Blackmer Customer Service.
SAFETY DATA
This is a SAFETY ALERT SYMBOL.
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,
death or major property damage.
Warns of hazards that CAN cause serious personal injury,
death or major property damage.
Warns of hazards that CAN cause personal injury
or property damage.
NOTICE:
Indicates special instructions which are very
important and must be followed.
NOTICE:
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 liquefied gas pumps,
and MUST be kept with the pump.
Blackmer liquefied gas pump service shall be
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 liquefied gas pumps.
Maintain ALL system and Blackmer liquefied gas
pump operation and hazard warning decals.

Table of Contents

Questions and Answers

  • S
    Susan Jenkins DVMAug 17, 2025
    How to prime BLACKMER Water Pump?
    • M
      mcdonaldstephanieAug 17, 2025
      If your BLACKMER Water Pump isn't priming, several actions can be taken. First, ensure the pump is wetted. If that's not the issue, consider replacing worn vanes. Other solutions include opening the suction valve, cleaning any clogged strainers, clearing the suction line or valves, and eliminating any vapor lock within the pump. You might also try increasing the pump speed during priming or inspecting the relief valve to ensure it's properly seated.
  • A
    Andrew WoodAug 19, 2025
    Why BLACKMER Water Pump has reduced capacity?
    • R
      racheldouglasAug 20, 2025
      If your BLACKMER Water Pump has reduced capacity, try the following: Increase the pump speed and ensure that the suction valves are fully open. Also, reduce any excessive restriction in the suction line and restrictions in discharge line. Damaged or worn parts should be replaced. Inspect the relief valve for proper setting and adjust the external bypass valve. Consider installing a vapor return line. Ensure vanes and the liner are correctly installed.
  • P
    Paul GreeneAug 22, 2025
    How to reduce noise in BLACKMER Water Pump?
    • U
      ublackAug 23, 2025
      If your BLACKMER Water Pump is making unusual noises, there are several potential solutions: Reduce the pressure drop in the suction line, and ensure you are not running the pump with a closed discharge line. Securely mount the pump and align the pump, reducer, or motor. Replace any worn or damaged bearings, and properly anchor the piping to reduce vibration. Correct any bent shafts or misaligned drive couplings, and replace excessively worn rotors. Also, fix any malfunctioning valves in the system, adjust the relief valve setting, correctly install the liner, and replace damaged vanes.
  • S
    sarapruittAug 25, 2025
    What to do if BLACKMER Water Pump has mechanical seal leakage?
    • M
      moorejohnAug 26, 2025
      If you're experiencing mechanical seal leakage in your BLACKMER Water Pump, consider these solutions: Use compatible O-rings and replace any that are nicked, cut, or twisted. Repair the shaft at the seal area and avoid overgreasing the ball bearings. Prevent excessive cavitation and inspect the mechanical seal faces.
  • C
    Christina HickmanAug 28, 2025
    What causes damaged vanes in BLACKMER Water Pump?
    • F
      Felicia BuchananAug 28, 2025
      If the vanes in your BLACKMER Water Pump are damaged, several factors could be at play. Start by removing any foreign objects from the pump. Avoid running the pump dry and take steps to prevent cavitation. Control excessive heat and replace any worn or bent push rods. It's also important to prevent hydraulic hammer, install the vanes correctly, and ensure compatibility with the liquids being pumped.
  • T
    Tanya CookAug 30, 2025
    Why BLACKMER LGRL1.25 has reduced capacity?
    • S
      scottsethAug 31, 2025
      Reduced capacity in your BLACKMER Power Pump can be caused by several factors. The pump speed may be too low, or the internal control valve might not be fully open. There could be excessive restriction in the inlet line due to undersized piping, too many elbows and fittings, or a clogged strainer. Damaged or worn parts like vanes, discs, liner, or rotor can also lead to reduced capacity. Other potential causes include excessive restriction in the discharge line, a worn or improperly set relief valve, an external bypass valve set too low, operating without a vapor return line, incorrectly installed vanes, or a liner installed backward.
  • S
    sarah00Sep 2, 2025
    What to do if BLACKMER LGRL1.25 is not priming?
    • T
      Tony JenkinsSep 2, 2025
      If your BLACKMER Power Pump is not priming, consider these possible solutions: Ensure the pump is wetted. Check for worn vanes. Verify that the internal control valve is open. Inspect for a clogged strainer or any obstructions in the inlet line or valves. For truck-mounted pumps, check for a broken drive train. Address potential vapor lock. Ensure the pump speed is adequate for priming. Finally, examine the relief valve for partial opening, wear, or improper seating.
  • J
    Janice CarlsonSep 5, 2025
    Why BLACKMER LGRL1.25 Power Pump is noisy?
    • M
      Mr. Kevin CollinsSep 5, 2025
      Noise in your BLACKMER Power Pump can stem from several issues. It could be due to excessive pressure drop caused by undersized or restricted fittings in the inlet line, or the pump speed may be too high. Other potential causes include the pump being too far from the fluid source, running the pump with a closed discharge line for extended periods, or the pump not being securely mounted. Misalignment of the pump, reducer, or motor, worn or damaged bearings, vibration from improperly anchored piping, a bent shaft, an excessively worn rotor, a malfunctioning valve, a relief valve setting that is too low, a backwards installed liner or damaged vanes can also contribute to noise.
  • E
    ericmaynardSep 7, 2025
    What causes damaged vanes in BLACKMER LGRL1.25 Power Pump?
    • K
      Kathleen BarrettSep 8, 2025
      Damaged vanes in a BLACKMER Power Pump can result from foreign objects entering the pump, running the pump dry for extended periods, cavitation, excessive heat, worn or bent push rods (or worn push rod holes in 4-vane rotors), hydraulic hammer (pressure spikes), incorrectly installed vanes, or incompatibility with the liquids being pumped.
  • D
    Doris PonceSep 12, 2025
    Why BLACKMER LGRL1.25 Power Pump motor is overloaded?
    • D
      Dylan BarnesSep 12, 2025
      An overloaded motor in your BLACKMER Power Pump can be attributed to several factors. The motor horsepower might be insufficient for the application, or there could be improper wiring or low voltage to the motor. Misalignment, excessive pressure or speed, improperly adjusted bearing locknuts, faulty or worn bearings, the rotor rubbing against the head or cylinder, or dirty mechanical seal faces can also cause motor overload.

BLACKMER LGRL1.25 Specifications

General IconGeneral
BrandBLACKMER
ModelLGRL1.25
CategoryPower Pump
LanguageEnglish

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