Harbor Freight Tools Plumbing Product 47907 User Manual

SHALLOW WELL PUMP  
3/4 Horsepower, PVC Housing  
Model 47907  
ASSEMBLY and OPERATING INSTRUCTIONS  
®
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2002 by Harbor Freight Tools®. All rights reserved. No portion of this  
manual or any artwork contained herein may be reproduced in any shape or form  
without the express written consent of Harbor Freight Tools .  
For technical questions and replacement parts, please call 1-800-444-3353  
 
9. Disconnect power. Unplug Pump when not in use.  
10. Stay alert. Watch what you are doing, use common sense. Do not install Pump when  
you are tired.  
11. Check for damaged parts. Before using Pump, any part that appears damaged  
should be carefully checked to determine that it will operate properly and perform its  
intended function. Check for alignment and binding of moving parts; any broken parts  
or mounting fixtures; and any other condition that may affect proper operation. Any part  
that is damaged should be properly repaired or replaced by a qualified technician.  
12. Guard against electric shock. Prevent body contact with grounded surfaces such as  
pipes, radiators, ranges, and refrigerator enclosures.  
13. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use accessories  
intended for use with this tool. Approved accessories are available from Harbor Freight  
Tools.  
14. Do not install Pump if under the influence of alcohol or drugs. Read warning  
labels on prescriptions to determine if your judgment or reflexes are impaired while  
taking drugs. If there is any doubt, do not install the Pump.  
15. Use proper size and type extension cord. If an extension cord is required, it must be  
of the proper size and type to supply the correct current to the tool without heating up.  
Otherwise, the extension cord could melt and catch fire, or cause electrical damage to  
the tool. This tool requires use of an extension cord of 0 to 10 amps capability (up to  
50 feet), with wire size rated at 18 AWG. Longer extension cords require larger size  
wire. If you are using the tool outdoors, use an extension cord rated for outdoor use  
(signified by “WA” on the jacket).  
16. Maintenance. For your safety, maintenance should be performed regularly by a  
qualified technician.  
Warning: People with pacemakers should consult with their physician(s) before  
using this product; operation of equipment in close proximity to a heart pacemaker  
could cause interference or failure of the pacemaker.  
Warning! Never operate this pump if the power cord or electrical components are  
damaged or the seals are compromised. Never plug in the power cord when wet or  
standing on damp or wet ground. Exercise extreme caution when working with electrical  
equipment in the presence of water to maintain your personal insulation to avoid shock.  
Do not allow others in the work area when working with electrical equipment. Use GFCI  
outlets when using this pump.  
Note: Performance of this tool (if powered by line voltage) may vary depending on variations  
in local line voltage. Extension cord usage may also affect tool performance.  
Warning:The warnings, cautions, and instructions discussed in this instruction manual  
cannot cover all possible conditions and situations that may occur.It must be understood  
by the operator that common sense and caution are factors which cannot be built into  
this product, but must be supplied by the operator.  
SKU 47907  
For technical questions, please call 1-800-444-3353.  
Page 3  
 
Unpacking  
When unpacking, check to make sure the parts listed on pages 7 and 8 are included. If any  
parts are missing or broken, please call Harbor Freight Tools at the number on the cover of  
this manual as soon as possible.  
Installation  
Note: For intake and discharge hose locations, see FIGURE 1 on page 5.  
Note: If power cords must be extended, only use no less than UL approved, 18 Gauge wire.  
Do not extend the wires more than 50 feet.  
1. Install the pump on a rigid, level platform above the water level.This platform must provide  
a solid, level surface that is capable of supporting the weight of the pump, and attached  
piping filled with water. Never allow the pump to become immersed in water.  
2. The level of the intake port should not be more than 12-15 feet above the water. Pumping  
efficiency falls off as the height above the water level increases.  
3. Keep the vertical lift that the pump must move water before discharge at a minimum.Vertical  
delivery above a few feet will degrade pump efficiency.  
4. The intake port must have a screen  
(not included) attached to prevent  
Typical Installation  
introduction of debris into the pump. At  
the end of the discharge pipe, either  
purchase a pre-made screen to fit, or  
wrap loose screen and secure with  
wire.  
5. Lay out the intake and discharge pipes  
with as few turns as possible to pre-  
vent air pockets within the lines. Air  
pockets interfere with pressure switch  
performance.  
Discharge  
Intake  
Pump  
6. Intake and discharge pipes must have  
a minimum of 1” to 1-1/4” diameter. Systems with larger vertical components should have  
larger diameter piping. Keep in mind that the maximum vertical lift (total vertical distance  
from the inlet screen to the discharge outlet) is 140 feet.  
7. For your protection, the power outlet used should have a Ground Fault Circuit Interrupter  
(GFCI). Have it installed by a qualified electrician. Keep the power line safely away from  
water.  
8. The inlet and discharge lines should not be wedged or stressed in a way that puts strain  
on the pump. Do not support the pump with the inlet and discharge lines.  
9. This is a self starting pump that uses a pressure switch. Once the power cord is connected,  
the pump can start at any time. Do not handle or perform maintenance on the pump if  
the power cord is plugged in.  
SKU 47907  
For technical questions, please call 1-800-444-3353.  
Page 4  
 
FIGURE 1  
Discharge  
PrimingValve Inlet  
Intake  
Shaft  
Air Valve  
(not visible)  
Note: Compression Tank (#1A) has a  
Rubber Bladder (51) inside.This Bladder  
must be pumped up with between 18 and  
19 PSI of air at all times. On the end of  
the Compression Tank opposite the side  
with the Pressure Meter, is an air valve  
located under a cover. Remove the cover  
over the air valve and periodically moni-  
tor this air valve with an air pressure gauge  
to ensure that the Rubber Bladder (51)  
maintains the required 18 to 19 PSI.  
Pressure Meter  
Operation  
Warning! Never pump liquids containing abrasive materials such as sand. Never pump  
flammable, corrosive, or volatile liquids.  
Warning! Never plug in the power cord when wet or standing on damp or wet ground. Do not  
plug in the power cord until step number 3 below.  
1. Make sure the intake pipe is fully submerged before operating the pump.  
2. Gently insert a screwdriver into the motor shaft and make sure the shaft turns freely.  
(See Figure 1)  
3. Important Note: Before starting the pump for the first time, prime it by pouring clean  
water into the Priming Valve Inlet (see Figure 1). If water leaks from the drain valve  
underneath the pump, securely close it and refill the unit.  
4. To begin pumping, plug in the power cord.  
REV 06i, REV 07g  
SKU 47907  
For technical questions, please call 1-800-444-3353.  
Page 5  
 
Troubleshooting  
Problem  
Cause  
Solution  
The pump won’t start  
No power  
Check connections  
Free the motor shaft  
Check gauge  
Blocked Impeller  
Pressure switch disconnected  
Thermal Protection cut out  
Allow pump to cool  
The pump operates but it  
won’t discharge water  
Inlet tube not submerged  
Air in suction pipe  
Inlet screen clogged  
Lifting height exceeded  
Submerge the inlet  
Check pipe and seals  
Clean screen  
Reduce lifting height  
Pump has low capacity  
Inlet pipe is too small  
Liquid is too dirty  
Lift height exceeded  
Tank’s rubber bladder under-  
inflated.  
Increase pipe diameter  
Clean screen frequently  
Reduce lift height  
Inflate to 18-19 PSI  
Never disassemble the pump or motor as this will damage the water seals. All repairs  
should be performed by a qualified technician.  
Maintenance  
Always disconnect pump from power source before attempting any maintenance.  
1. Clean the inlet screen regularly to remove accumulated debris.  
2. Use pressure gauge to test pressure in Tank’s Rubber Bladder (51). Pressure should  
range between 18 and 19 PSI.  
3. Wipe the pump clean with a soft, damp cloth with soapy water. Do not use solvents. Do  
not get the electrical components wet.  
4. If storing the pump for a long time, store it in a dry location, and apply a light layer of oil to  
the metal parts prior to storage, to inhibit rust.  
5. To drain the pump, disconnect the water lines and turn it upside down.  
PLEASE READ THE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS  
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES  
ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED  
TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY  
PARTS OFTHE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES  
THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND  
LICENSED TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY  
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS  
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTSTHERETO.  
REV 06i, REV 07g  
SKU 47907  
For technical questions, please call 1-800-444-3353.  
Page 6  
 
Parts List  
Part  
1
Description  
Screw M8x12  
Qty.  
Part  
Description  
Qty.  
1
4
21 Capacitor  
22 Side Cover  
2
Motor Housing  
Fan Blade  
Rear Cover  
Spring Washer  
Motor Bolt M5x125  
Stator  
1
1
3
1
23 Switch Seal Plate  
24 Waterproof Switch  
25 Screw 3.5 x 20  
26 Hex Nut M8x20  
27 Front Cover  
28 Rubber Ring  
29 0-ring  
1
4
1
1
5
1
3
6
4
4
7
1
1
8
Bearing  
1
1
9
Rotor  
1
1
10 Bearing  
1
30 Flange  
1
11 Rubber Sheath  
12 Screw 4.2x15  
13 Cable Block  
14 Cable Sleeve  
15 Connection Cable  
16 Screw 2.9x15  
17 Waterproof Cover  
18 Rubber Cover  
19 0-ring  
1
31 Immobile Ring  
32 Motor Ring  
33 Impeller  
1
2
1
1
1
1
34 Flow Guide Plate  
35 0-ring  
1
1
1
4
36 Flow Guide Assy.  
37 0-ring  
1
1
1
1
38 Pump Shell  
39 Lg. Valve Cover  
40 0-ring  
1
1
2
20 Capacitor Cover  
1
2
Assembly Drawing  
SKU 47907  
For technical questions, please call 1-800-444-3353.  
Page 7  
 
ASSEMBLY DRAWING  
Note: When ordering a part from this drawing, you must include the suffix “A” with  
the number.  
REV 08/05  
SKU 47907  
For technical questions, please call 1-800-444-3353.  
Page 8  
 

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