EBARA CGUII, CGFU User Manual

Submersible Grinder Pump

Model DGU II

Model DGFU

Model DGFMU

Operating Instructions, Installation & Maintenance Manual

EBARA Fluid Handling

EBARA International Corporation

EBARA Submersible Grinder Pumps DGUII/DGFU

Operating, Installation, and Maintenance

EBARA Fluid Handling

www.pumpsebara.com

(t) 803 327-5005 • (f) 803 327-5097

rev. 11/05

Before handling this pump, always disconnect the power first. Do not use sparkable electrical devices or open flames in a septic (gaseous) or possible septic sump.

Do not work under heavy suspended object unless there is a positive support under it to stop its fall in event of sling or hoist failure. Disregard of this warning could result in personal injury.

This pump should only be serviced by qualified or factory trained personnel.

Contents

Section Page

1. Safety Information and Introduction . . . . . . . . . . . . . . . . . . . . . 3

2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3. Pump Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6. Maintenance and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7. Thermal Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8. Leakage Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

9. Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Safety Information

Design of this EBARA pump is based on superior engineering and long experience. To prevent trouble and provide satisfactory operation and long life, it is important to understand the EBARA pump thoroughly by careful study of this manual. If any questions arise regarding this manual, please direct them to EBARA Fluid Handling.

This instruction manual includes necessary items for installation, operation and maintenance. Read this manual carefully to ensure correct installation, operation and maintenance.

Be sure to keep this instruction manual on hand for future reference.

Warning

CAUTION

EBARA Submersible Grinder Pumps DGUII/DGFU

Operating, Installation, and Maintenance

EBARA Fluid Handling

www.pumpsebara.com

(t) 803 327-5005 • (f) 803 327-5097

rev. 11/05

Pump Checks

1. Check the following points upon receipt of your pump:

(1) Check the name plate to confirm that it is the pump ordered. (2) Ensure that the pump voltage is the same as the power at your location. (3) Check oil level at oil plug. (4) Check that all plugs and fastening bolts are properly tightened. (5) Check that the pump has not been damaged and the cable glands and cables are in a satisfactory condition. (6) Check accessories and spare parts against the packing list. (7) Check that the impeller turns smoothly by hand.

2. Precautions when operation is suspended:

(1) If operation is to be suspended for 30 days with the pump immersed in water, measure the insulation

resistance of the motor. If resistance is over 1 mega ohm, operate pump to prevent rust from developing on moving parts. Follow the instructions under OPERATION when pump operation is to be resumed.

(2) For dry storage, clean out pump and store in a dry place. Follow the instructions under INSTALLATION

and OPERATION when pump operation is to be resumed.

Check the nameplate for your pump’s motor voltage and current. Other specifications are noted in the chart below.

Be careful not to exceed the given specifications in the use of your products.

Specifications

Item

Liquid handled Type

Temperature

Materials Casing

Impeller Grinder impeller Grinder disk

Shaft Motor type Shaft seal lubrication oil Maximum water depth Installation

Specifications

Sewage, waste water, miscellaneous drain water 32 - 104° F Cast iron Cast iron High-chrome cast iron High-chrome cast iron 403 stainless steel Air filled submersible motor Turbine No. 32 ISO VG - 32 65 ft with Quick Discharge Connector or Floor mounted

CAUTION

EBARA Submersible Grinder Pumps DGUII/DGFU

Operating, Installation, and Maintenance

EBARA Fluid Handling

www.pumpsebara.com

(t) 803 327-5005 • (f) 803 327-5097

rev. 11/05

Insulation resistance measurement:

(1) For three phase motor:

With the motor and cable (excluding the power supply connections) immersed in water, use a megger to measure the insulation resistance between the ground wire and each phase of the motor.

(2) For single phase motor:

Use a megger to measure the insulation resistance between each wire and grounding wire.

Measure the insulation resistance. The value should be more than 1 mega ohm. While making the measurement, keep the power supply cable off the ground.

When measuring the insulation resistance with meggar for motor windings do not test overload protection.

MINIATURE THERMAL PROTECTION (MTP) AND LEAKAGE DETECTOR (LD) ARE USED FOR MOTOR PROTECTION. MTP AND LD CABLES MUST BE INSTALLED IN CONTROL CIRCUIT. MTP AND LD DO NOT APPLY TO DGUII MODELS. DGUII MODELS USE AN AUTO-CUT DEVICE TO PROTECT AGAINST OVER TEMP.

Before insulation resistance measurement, always disconnect the power first.

All electrical work should be performed by a qualified electrician and all national and local electrical codes must be observed.

Installation

1. Check the following before beginning installation:

Warning

CAUTION

EBARA Submersible Grinder Pumps DGUII/DGFU

Operating, Installation, and Maintenance

EBARA Fluid Handling

www.pumpsebara.com

(t) 803 327-5005 • (f) 803 327-5097

rev. 11/05

When lifting the pump, use appropriate crane (or hoist) and lift system, check position and tightness of lift system so that weight of the pump is not UNBALANCED.

Failure to observe this precaution can result in serious accidents.

Handle the cables very carefully. If they are bent or pulled excessively, the cable and the moulded seal may be damaged, resulting in insulation failure. Also, care is needed to protect cable ends against water intrusion.

Installation

2. Pump installation:

1. Clean the installation area.

2. Under no circumstances should the cable be pulled while the pump is being transported or installed. Attach a chain or rope to the grip and install the pump.

3. This pump must not be installed on its side. Ensure that it is installed upright on a secure base.

4. Install the pump at a location in the tank where there is the least turbulence.

5. If there is a flow of liquid inside the tank, support the cable where appropriate. (See Fig. 1)

6. Install piping so that air will not be entrapped. If piping must be installed in such a way that air pockets are unavoidable, install an air release valve wherever such air pockets are most likely to develop.

7. Do not permit end of discharge piping to be sub merged, as backflow will result when the pump is shut down.

8. These pumps do not have an automatic operating system based on built-in floats. Do not operate the pump for a long time with the water level near the minimum operating level as the automatic cut-off switch incorporated inside the motor will be activated. To avoid dry operation, install an automatic operating system, as shown in Fig. 2 and maintain a safe operating water level.

Before installation check rotation. Correct rotation is clockwise when viewed from top of motor. Read ELECTRICAL WIRING.

Keep hands completely away from grinder impeller when making this check.

H1: Operating water level

This must be above the top of the motor.

: Lowest water level (motor flange)

Warning

CAUTION

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