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Winterizing 

 

Consult your dealer for advice on winterizing your 

equipment if freezing temperatures occur in your locality. 
His knowledge of your equipment makes him the best 
qualified source of information. Follow his 
recommendations, and if these include draining the filter 
system, proceed as follows: 
1.  If your system does not contain a filter, proceed to 

step2. 
A.  For sand filters: BACKWASH for 3 to 5 

minutes and set dial valve to WINTERIZE. 

B.  For cartridge filters: Clean the filter element and 

store in a dry place. 

2.  Drain system by loosening drain plugs (drain plugs 

will drain without completely removing the plug 
from unit) and/or removing pipe caps. 

 

Water Chemistry

 

A proper and consistent use of chemicals is 

necessary to maintain clean, sanitary water, prevent a 
spread of germ infection and control the growth of algae 
which can spoil the appearance and enjoyment of your 
pool or spa. 

Chlorine is the most commonly used chemical to 

provide clean, sanitary water. Either dry or liquid chlorine 
(calcium or sodium hypochlorite) can be used which 
should be added daily as it is dissipated by dirt and germs 
as well as be the sun and wind. 

It is also important that the correct level of acidity or 

alkalinity of the pool water be maintained. This is the pH 
of your pool with pH 7.0 being neutral. Readings above 
7.0 are alkaline and below are acid. A desirable range is 
7.2 – 7.4. 

 

Pump Maintenance

 

1.  Motors are self-lubricating – no lubrication required. 
2.  Clean hair & lint strainer if you have a strainer body 

pump. 

3.  Visually inspect motor for blockage of air vents on 

motor shell. Remove any debris after breaker off. 

4.  Shaft seals may become worn and must be replaced if 

leakage is observed. 

 

Cleaning

 

Switch power off. Close valves in suction and return 

line. Unscrew strainer Ring-Lok counterclockwise and 
remove the strainer cover from hair and lint strainer and lift 
out strainer basket. Clean and replace the basket. Take care 
to seat basket properly. Clean O-Ring and re-lubricate with 
petroleum jelly if necessary. Clean O-Ring seats on cover 
and strainer. Refit cover and strainer – hand tighten only – 
and open valves. Put pump back into operation. 

Caution:

 Do not retighten strainer during operation. 

 

Service & Repair Parts

 

Refer all service to your local dealer as his knowledge 

of your equipment makes him the best qualified source of 
information. Order all repair parts through your dealer. Give
the following information when ordering repair parts: 
1.  Unit nameplate data. 
2.  Description of part. 

 

Trouble Shooting

 

MOTOR DOES NOT START 
1.  Disconnect switch or circuit breaker in OFF position. 
2.  Fuses blown or thermal overload open. 

Locked motor shaft. 

3.  Motor windings burned out. 
4.  Defective starting switch inside single-phase motor 
5.  Disconnected or defective wiring 
6. Low 

voltage 

 

MOTOR DOES NOT REACH FULL SPEED 

1. Low 

voltage 

2.  2 speed model set on low speed 
3.  Motor windings connected for wrong voltage on 

dual voltage model. 

 
MOTOR OVERHEATS (Protect trips) 

1. Low 

voltage 

2.  Motor windings connected for wrong voltage on 

dual voltage model. 

3. Inadequate 

ventilation 

 
PUMP DELIVERS NO WATER 

1.  Pump is not primed 
2.  Closed valve in suction or discharge line 
3.  Leakage or air into suction system 
4. Impeller 

clogged 

 
LOW PUMP CAPACITY 

1.  Valve in suction or discharge line partly closed 
2.  Suction or discharge line partly plugged 
3.  Suction or discharge line too small 
4.  Pump running at reduced speed (see above) 
5.  Plugged basket in skimmer or hair and lint strainer 
6. Dirty 

filter 

7. Impeller 

clogged 

8.  Wrong rotation (3 phase only) 

 
LOW PUMP PRESSURE 

1.  Pump running at reduced speed (see above) 
2.  Wrong rotation (3 phase only) 
3.  Discharge valve or inlet fittings closed too much 

 
HIGH PUMP PRESSURE 

1.  Discharge valve or inlet fittings closed too much 
2.  Return lines too small 
3. Dirty 

filters 

 
NOISY PUMP AND MOTOR 

1.  Plugged basket in skimmer or hair in lint strainer 
2.  Worn motor bearings 
3.  Valve in suction line partly closed 
4.  Suction line partly plugged 
5.  Vacuum hose plugged or too small 
6.  Pump not supported properly 

 
LEAKAGE OF WATER AT SHAFT 

1.  Shaft seal requires replacement 

 
AIR BUBBLES AT INLEY FITTINGS 

1.  Leakage air into suction line at connections or valve 

stem 

2.  Cover gasket of hair and lint strainer needs cleaning 
3.  Restriction in suction line 
4.  Low water level in pool 

 

NOTE: If the recommendations in the Trouble 
Shooting portion of this manual do not solve your 
particular problem(s), please contact your local dealer 
 for service.

 

Summary of Contents for Magnum

Page 1: ...uce the risk of electrical shock do not use an extension cord to connect unit to electrical supply provide a properly located outlet 7 CAUTION For pumps with a 25 ft 7 62m cord This pump is for use wi...

Page 2: ...ling maintenance if the system is installed below deck level Suction valves are essential for priming all pumps without strainer bodies installed above water level Pumps with strainer bodies are self...

Page 3: ...ner 2 with plugs Magnum Force body Plug O Ring 2req d plug with 47011200 O Ring Base motor support assembly 2 88 Motor support Motor base Dowel pin x 1 SS 4 89 Square ring Hex wash hd A8 16 x 1 SS 2 r...

Page 4: ...Kit 5 Square ring Diffuser bolt 8 16 x 1 SS 2 Req d Diffuser 1 HP full rate 1 HP uprate Diffuser 1 2 HP full rate 2 HP uprate Diffuser 3 HP full rate Diffuser New 2HP full rate Eye seal 1 HP full rat...

Page 5: ...g Basket LR LVL Strainer Basket Strainer case assy With plugs LR Case assy With 1 plug and O Ring LVL Strainer case assy 9 00 disch Square ring 6 x 1 8 x 1 8 Seal ring Impeller for 5LVL 5LR HP 3 45D 9...

Page 6: ...3939 05 R 05 3940 02 R 10 0002 06 47 0361 48 R 11 1520 00 R 90 1069 15 R 90 1069 23 R 90 1069 31 R 90 1069 49 R 12 1135 02 R Strainer RingLok Strainer cover Strainer O Ring 4 7 8 ID x 3 16 THK Strain...

Page 7: ...Put pump back into operation Caution Do not retighten strainer during operation Service Repair Parts Refer all service to your local dealer as his knowledge of your equipment makes him the best qualif...

Page 8: ...ossible JBD at its discretion may replace or repair any product that fails under this warranty after inspection by an authorized company representative or after JBD has received the product at our fac...

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