RUTHMAN Gusher 7550 Series

Questions and Answers

A
Andrea BranchAug 4, 2025
How to troubleshoot no water delivered from RUTHMAN Gusher 7550 Water Pump?
- B
  brownchristopherAug 5, 2025
  If your RUTHMAN Water Pump isn't delivering water, start by checking that the water level is above the pump housing to ensure it's primed. Also, verify the motor RPM and inspect the line and strainer, cleaning them if necessary. Make sure the impeller isn't clogged and that it's rotating in the correct direction; clear any debris and consult the factory for re-wiring instructions if needed. Finally, ensure the impeller is properly adjusted and that there are no obstructions in the suction or discharge piping, including verifying that shipping port plugs have been removed.
K
Kimberly ToddAug 11, 2025
Why is my RUTHMAN Gusher 7550 vibrating?
- H
  hhowardAug 11, 2025
  If your RUTHMAN Water Pump is experiencing vibration, several factors could be at play. Start by inspecting the shaft for any bending or run out. Next, check for pipe strain by unbolting the discharge flange and observing any movement or separation. Additionally, examine the impeller for clogs and clear any debris. Finally, ensure that the coupling is properly aligned.
J
John MacdonaldAug 16, 2025
What to do if RUTHMAN Water Pump has low flow or pressure?
- A
  Amanda ZavalaAug 16, 2025
  If your RUTHMAN Water Pump is not delivering enough flow or pressure, begin by checking the motor RPM. If the discharge head is higher than expected, consult the factory for resizing options. Ensure the impeller is free from clogs. If you notice wear on the wear ring or damage to the impeller, replace these components. For hot water applications, ensure sufficient suction head. If the fluid's viscosity differs from the engineered specifications or the pump is running backward, consult the factory and verify the pump's direction. Also, check for cavitation and air entrainment, and try to reduce the percentage of air in the liquid.
D
Debra WilliamsAug 22, 2025
Why does RUTHMAN Gusher 7550 Water Pump lose flow or pressure after running?
- E
  Emily NelsonAug 22, 2025
  If your RUTHMAN Water Pump works for a while and then loses flow or pressure, check the suction line and flanges for leaks, repairing or replacing them as needed. Also, inspect the impeller for clogs and clear any debris. Check for air entrainment and confirm the liquid temperature.
H
Henry HendersonAug 28, 2025
Why RUTHMAN Gusher 7550 Water Pump takes too much power?
- N
  Nicole MccoyAug 28, 2025
  If your RUTHMAN Water Pump is taking too much power, start by checking the motor RPM and adjusting the discharge to meet the pump's design point. If the specific gravity or viscosity of the fluid is too high, or if the shaft is bent, consult the factory and check the shaft run out. Inspect the power frame for binding and look for buildup on bushings or inside the housing, and consult the factory if needed. Also, adjust the discharge to meet the pump design point if the pump is delivering too many gallons.

Summary

WARRANTY

RECEIVING AND INSPECTION

RECEIVING

Steps for checking pump upon receipt, including shaft rotation, part integrity, and name tag details.

INSTALLATION

Pipe Connections and Support

Instructions for proper piping support, flange alignment, and check valve placement.

Impeller Adjustment Procedure

Detailed steps for setting the correct impeller clearance for optimal pump performance.

Slinger Adjustment Check

Note on inspecting the slinger's position before installing the pump unit.

Coupling Alignment Procedures

Comprehensive methods for checking and correcting parallel and angular coupling misalignment.

Electrical Connections

Guidelines for safe and compliant electrical connections, including conduit recommendations.

MAINTENANCE

Lubrication

Information on initial factory lubrication and recommended intervals for additional lubrication.

Grease Type Recommendations

Guidance on proper grease types and importance of avoiding mixing different greases.

Lubrication Procedure

Step-by-step instructions for safely lubricating the pump.

Coupling Alignment Schedule

Recommended schedule for checking coupling alignment after initial operation and periodically.

DISASSEMBLY

Chair and Drive Motor Disassembly

Steps for disconnecting electrical leads, removing coupling guard, and detaching the motor.

Power Frame Disassembly

Procedures for disassembling 52VHD, 53VHD, and 54VHD power frame models.

Barrel and Drive Motor Disassembly

Steps for removing the barrel and motor assembly from the pump's power frame.

PUMP

52 VHD Pump Disassembly

Detailed steps for disassembling the 52VHD barrel or chair mount pump.

53 VHD & 54 VHD Pump Disassembly

Detailed steps for disassembling the 53VHD & 54VHD chair mount pump.

53 VHD & 54 VHD Barrel Mount Disassembly

Detailed steps for disassembling the 53VHD & 54VHD barrel mount pump.

REASSEMBLY

General Reassembly Steps

Key instructions for reassembling the pump, reversing disassembly procedures.

Throttle Bushing and Wear Ring Checks

Guidance on inspecting throttle bushings and impeller wear rings for condition.

BEARING INSTALLATION

Work Area Preparation and Technique

Emphasizes cleaning the work area and proper bearing pressing techniques to prevent damage.

Bearing Installation Methods

Covers using arbor presses, hammer blows, and housing installation for bearings.

TROUBLESHOOTING

No Water Delivered

Common causes and remedies for a pump failing to deliver water.

Insufficient Flow or Pressure

Addresses issues leading to reduced flow or pressure and their corresponding solutions.

Vibration Issues

Identifies potential causes of pump vibration and troubleshooting steps.

Intermittent Flow Loss

Explains problems where flow is lost after operation begins and potential fixes.

High Power Consumption

Discusses reasons for excessive power draw and troubleshooting methods.

EXPLODED VIEWS

52, 53 & 54 Heavy Duty Power Frame Centerline Models

Exploded view diagram and parts list for centerline models of the power frame.

52, 53 & 54 Heavy Duty Power Frame Non-Centerline Models

Exploded view diagram and parts list for non-centerline models of the power frame.

MAINTENANCE HISTORY

ENGINEERING DATA

Power Frame Specifications

Lists bearing types, shaft diameters, and other specifications for various power frames.

Lubrication and Alignment Logs

Sections for recording grease lubrication and coupling alignment checks.

FREQUENTLY USED FORMULAS AND EQUIVALENTS

Head and Pressure Formulas

Formulas for calculating head in feet and psi, accounting for specific gravity.

Net Positive Suction Head (NPSH)

Formulas for calculating NPSH for flooded suction and suction lift conditions.

Unit Conversion Tables

Tables for converting pressure, flow, volume, weight, and vacuum units.

GENERAL ENGINEERING DATA

Viscous Liquids and Viscosity

Explains viscosity and provides a conversion table for different liquids.

Pumping Viscous Liquids Data

Data on flow and head reduction percentages for increasing liquid viscosity.

General Conversion Chart

Chart for converting common engineering units like bars, Celsius, feet, gallons, and horsepower.

PIPE FRICTION CALCULATIONS

How to Calculate Head

Steps to determine total head by calculating static lift, friction loss, and velocity head.

Pipe Friction Loss Tables

Tables showing friction loss in feet per 100 ft of pipe for various sizes and flow rates.

Elbow Friction Loss and Horsepower Calculation

Friction loss for elbows and formula for brake horsepower calculation.

Effect of Speed Changes

Explains how changes in pump speed affect capacity, head, and horsepower.

NOZZLE DISCHARGE DATA

Theoretical Nozzle Discharge

Table showing theoretical discharge for various nozzle sizes and heads.