Harbor Freight Tools Electric Heater 47906 User Manual

SHALLOW WELL PUMP  
1 HP - Stainless Steel  
Model 47906  
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 47906  
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 UL approved power cords that are 18 Gauge  
wire. Do not extend the power cords 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.  
Typical Installation  
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  
Discharge  
increases.  
Intake  
Pump  
3. Keep the vertical lift that the pump  
must move water before discharge, to  
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 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.  
Note: A foot valve (not included), installed on the suction inlet, is recommended to insure that  
the pump will keep it prime.  
5. Lay out the intake and discharge pipes with as few turns as possible to prevent air pockets  
within the lines. Air pockets interfere with pressure switch performance.  
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.  
REV 12/05  
SKU 47906  
For technical questions, please call 1-800-444-3353.  
Page 4  
 
Discharge  
PrimingValve Inlet  
Intake  
FIGURE 1  
Pressure  
Meter  
Air Valve  
(not visible)  
Note: CompressionTank (#1A) has a rubber bladder inside. This bladder must be pumped up with between 21 and  
29 PSI of air at all times. On the end of the CompressionTank opposite the side with the Pressure Meter, is an air  
valve located under a cover. Remove the cover over the air valve and periodically monitor this air valve with an air  
pressure gauge to insure that the rubber bladder maintains the required 21 to 29 PSI.  
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 4 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.  
NOTE: It is necessary that you install a foot valve (not included), if you are drawing  
water from a source that is lower than the pump. The foot valve should be installed on  
the bottom of the inlet pipe. A foot valve is a one way valve that will only allow the water  
to flow in one direction. This should prevent the need to prime the pump every time  
you use it by keeping the water in the inlet pipe from draining out after the pump is  
turned off. Check the pump for prime each time you use it. Running the pump dry will  
damage it.  
4.  
To begin pumping, plug in the power cord.  
REV 11/05, 09/06  
Page 5  
SKU 47906  
For technical questions, please call 1-800-444-3353.  
 
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  
Lifting height exceeded  
Tank’s rubber bladder under-  
inflated.  
Increase pipe diameter  
Clean screen frequently  
Reduce lifting height  
Inflate to 21- 29 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 air pressure gauge to test air pressure in Tank’s rubber bladder. Air pressure should  
range between 21and 29 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 09/06  
SKU 47906  
For technical questions, please call 1-800-444-3353.  
Page 6  
 
Parts List  
Part  
1
Description  
Screw M8x12  
Qty.  
4
1
1
1
1
4
1
1
1
1
1
2
1
1
1
4
1
1
1
1
1
1
1
Part  
Description  
Qty.  
1
24 Waterproof Switch  
25 Screw 3.5 x 20  
26 Hex Nut M8x20  
27 Front Cover  
28 Rubber Ring  
29 0-ring  
2
Motor Housing  
Fan Blade  
Rear Cover  
Spring Washer  
Motor Bolt M5x125  
Stator  
3
3
4
4
1
5
1
6
1
7
30 Flange  
1
8
Bearing  
31 Immobile Ring  
32 Motor Ring  
33 Impeller  
1
9
Rotor  
1
10 Bearing  
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  
34 Flow Guide Plate  
35 0-ring  
1
1
36 Flow Guide Assy.  
37 0-ring  
1
1
38 Pump Shell  
39 Lg. Valve Cover  
40 Large Bushing  
41 Sealed Latex  
42 Screw M8x20  
43 0-ring  
1
2
1
1
4
20 Capacitor Cover  
21 Capacitor  
1
44 Small Bushing  
45 Small Valve Cover  
1
22 Side Cover  
1
23 Switch Seal Plate  
Assembly Drawing  
SKU 47906  
For technical questions, please call 1-800-444-3353.  
Page 7  
 
Assembly Drawing A  
Note: When ordering a part from this drawing, you must include the suffix “A”  
with the number.  
REV 08/05  
SKU 47906  
For technical questions, please call 1-800-444-3353.  
Page 8  
 

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