Gespasa BDP - User Manual

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BDP · HIGH FLOW PUMPS
INSTRUCTION MANUAL
1. INTRODUCTION
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The vane pumps use a rotor with sliding blades that push the liquid behind each blade from the inlet opening and move it to
the pumping chamber. When the rotor turns, the liquid is transferred among the vanes to the outlet opening being
discharged, while the pumping chamber is compressed. Each blade applies a positive mechanical thrust to the liquid it has.
The blade contact with the chamber walls is kept by three forces:
 The centrifugal force of the rotor rotation.
 Thrust rods that act between the opposed pairs of vanes.
 The liquid pressure that gets in the slots of the vanes and acts in their top.
Each revolution of a pump displace a constant volume of fluid. The pressure variation has a minimum effect. The losses
and turbulences are reduced at minimum while the high volumetric output is guaranteed.
They are heavy duty pumps, made of cast iron and stainless steel, with single-race grease-lubricated ball bearings and
isolated from the pumping product by mechanical seals with nitrile or Viton joints, according their needs.
All the pumps has built in a safety valve. They are perfectly adapted to the truck service and transport, in general,
tank load and unload, storage of fuel or any other non-corrosive liquid free of particles in suspension.
TECHNICAL DATA
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BDP
MODELS
PUMP SIZE
Maximum pump speed ( rpm)
1” 1.5” 2.5” 3” 4”
1,400 740 640 640 520
Maximum viscosity¹
20,000 (4250)
Maximum temperature²
356 ºF (180 ºC)
Ma
x
imum differential
p
ressure
125 psi (862 kPa)
Maximum working pressure
175 psi (1207 kPa)
(1) The viscosity shown is in SSU (cP). cP= cSt for a fluid with a density of 1 kg/dm³.
(2) The maximum surface temperature of the pump in potentially explosive atmospheres is 135 ºC.

Summary

1. INTRODUCTION

SAFETY INFORMATION

2. WARNINGS

2.1. SUCTION HOSE

Discusses restrictions and cavitation issues related to suction pipe length and diameter.

2.2. DELIVERY PIPE

Covers pipe selection for minimum flow reduction and system resistance.

3. INSTALLATION

3.1. CLEANING BEFORE THE INSTALLATION

Emphasizes cleaning the tank and suction pipe to prevent pump damage.

3.2. LOCATION AND PIPES

Provides guidelines for optimal pipe installation to minimize losses and ensure pump longevity.

3.3. PUMP ASSEMBLY

Recommends mounting the pump on a solid foundation for reduced noise and vibration.

3.4. COUPLING ALIGNMENT

Details the process and acceptable tolerances for parallel and angular coupling alignment.

3.5. PUMP ROTATION

Explains how to determine and set the correct clockwise or anticlockwise pump rotation direction.

4. OPERATION

4.1. CHECKINGS BEFORE THE START-UP

Outlines essential checks of the pipe system, valves, and pump rotation before starting operation.

4.2. START-UP PROCEDURE

Provides a step-by-step guide for initiating pump operation, including priming and parameter checks.

4.3. REVERSE TURN

Describes operating the pump in reverse, noting safety valve limitations and output reduction.

4.4. PUMP SAFETY VALVE

Explains the function of the internal safety valve and when to use external control valves.

4.4.1. Safety valve setting

Details instructions for adjusting the safety valve's pressure setting to increase or decrease it.

4.5. HEATING CHAMBER

Covers the use and safety requirements for pumps equipped with a heating or cooling chamber.

4.6. SURFACE TEMPERATURE OF THE PUMP

Discusses factors affecting surface temperature and limits for explosive environments.

4.7. ATEX MARK OF THE EQUIPMENT

Describes the ATEX marking for equipment used in potentially explosive atmospheres.

4.8. NOISE EMISSION OF THE PUMPS

Declares the noise emission values for the pumps according to international standards.

5. PUMP MAINTENANCE

5.1. PLANNED MAINTENANCE

Outlines scheduled maintenance tasks including filter cleaning and bearing lubrication procedures.

5.2. VANE REPLACING

Explains the simple procedure for replacing pump vanes without special tools.

5.2.1. Vane position

Details the correct orientation and placement of vanes within the pump body for proper operation.

6. PUMP TROUBLESHOOTING

7. PUMP ASSEMBLY INSTRUCTIONS

BYPASS ASSEMBLY

Lists the components of the bypass and begins the assembly description.

DISASSEMBLY

Provides instructions for disassembling the pump, starting with removing the bearing cap.

8. WARRANTY

9. EU CONFORMITY MACHINE DECLARATION

Gespasa BDP Specifications

General

Brand	Gespasa
Model	BDP
Category	Water Pump
Language	English