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Edson 120A Скачать руководство пользователя страница 9

146 DUCHAINE BLVD., NEW BEDFORD, MA.  02745-1292    TEL.  508-995-9711    FAX  508-995-5021     E-MAIL  [email protected]

Valve Assemblies & The Valve Seats: The sealing of the flapper valves are what makes the diaphragm

pump work. If the valves are not sealing properly, the pump will not be performing to full potential
or may not be pumping at all. The valves tend to last longer than the diaphragm. When you
change the diaphragm inspect the valves for cracks and delamination and the valve seats for
pitting and any build up that will prevent the valve rubber from sealing effectively. Testing the
pump is the best way to evaluate performance.

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Change the valve assemblies as required.

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Inspection and testing on a regular bases is recommended. For continuous duty application,
inspect the pump daily until a life pattern is established.

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See Pump Performance Tests .

P-120A -02 pg. 9

Page 9 Maintenance

   Trouble Shooting

2.Problem

Air Cylinder is not going
up and down.

Possible Causes

a. Air pressure is low.
b. Discharge or suction line is
blocked.
c. Air cylinder is malfunctioning.

Action

If the cause is not obvious, isolate the source.
Check air line for pressue and flow. If ok, discon-
nect the inlet and discharge plumbing from the
pump and restart the pump. If pump cycles without
the plumbing connected, there could be a clog in
the lines. The back pressure caused by a com-
plete blockage in the inlet and discharge line  will
stop the pump. If the pump cylinder still does not
cycle then the problem is in the air cylinder. See
air cylinder section.

1.Problem

Pump is running, liquid
is not moving.

Possible Causes

a. Suction line is blocked.
b. Suction line has air leak
between liquid and inlet of the
pump.
c. Discharge and/or suction
valves are not working.
d. Diaphragm has a leak.
e. Discharge or suction line is
to high.

Action

If the cause is not obvious, isolate the source.
Disconnect the inlet and discharge plumbing from
the pump and perform the Manual Test. If the
cause is not in the pump check for a block or an
air leak in the suction line. Suction air leaks can
be cumulative and can be as simple as one or two
fittings not being sealed properly. Review Plumbing

The Edson Air Powered Diaphragm Pump is very simple and problems are usually isolated to the following components:

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Suction and Discharge Plumbing

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The Diaphragm and Valves

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The Air Cylinder

Содержание 120A

Страница 1: ...minum 2 Inlet and 2 Discharge 120ACB 200 Air Powered Diaphragm Base Mount Bronze 2 Inlet and 2 Discharge l Make sure the pump received is the pump ordered Compare the pump with the packing list l Make sure the parts list attached to this manual is the one for your pump l Fill in the Serial No and Model No below AIR POWERED DIAPHRAGM PUMP MODELS 120A Pump Models Index Page 1 Index ENTER YOUR PUMP D...

Страница 2: ...0 S U C T I O N H E I G H T DISCHARGE HEIGHT 13 Cycles Per Min 5 ft 1 5 m 1 ft 3 m 10 ft 3 m 12 ft 3 7 m 0 5 ft 1 5 m 10 ft 3 m 9 34 7 26 7 26 7 26 7 26 7 26 6 23 6 23 5 20 5 20 4 14 3 12 S U C T I O N H E I G H T gpm lpm gpm lpm gpm lpm Pump Performance Is Dependent On Cycle Rate of The Pump Air Cylinder The Plumbing Head l Volume is expressed in GPM gallons per minute and LPM liters per minute l...

Страница 3: ...al and vertical axis Inlet Inlet Inlet Discharge Discharge OK OK OK Discharge Discharge Discharge Inlet Inlet Inlet Vertial Axis Discharge Discharge Inlet Horizontal Axis Discharge Inlet Page 3 Installation Installation Guidelines P 120A 01 pg 3 Step 1 Check All Bolts Make sure that all bolts on the pump are tight Tools 2ea 9 16 1 2 and 7 16 Box Wrenches 7 16 1 2 9 16 Step 2 Install Stainless Stee...

Страница 4: ... cycle rate The first is by adjusting the 2 needle valves one on each end of the air solenoid The second is by closing and opening the air flow control valve You will use a combination of both adjustments to set the pump performance you need once the plumbing is installed and liquid is being pumped 1 Open the air line 2 Set air line pressure to 90 psi 3 Open air flow control valve all the way 4 Us...

Страница 5: ...er the force of gravity liquid will pass right through a diaphragm pump Also consider a diaphragm pump can not control a siphon condition They are used many times to start one lDISCHARGE FITTINGS PIPE AND HOSE SHOULD ALL BE THE SAME SIZE AND NEVER BE SMALLER THAN THE INLET BECAUSE a smaller discharge line increases work for the pump and increases the possibility of clogging lUSE ONLY LONG RADIUS E...

Страница 6: ...ry suction start performance of the pump and make clearing the valves easy Order Edson Clear Check Valves 69CL 150 1 5 lPUMPING AT THE PROPER SPEED When pumping liquid with solids the speed may be too slow to keep the solids and the liquid combined The solids will stop moving and begin to clog the line Pumping at a faster rate or decreasing the hose size to increase velocity may be the solution Ch...

Страница 7: ... installation is different so use the charts as a guideline 6 Example 1 The fill test at 30 GPM The diaphragm is going up and down at 56 cycles per minute The pump is approximately 6 ft above the liquid I disconnected the installation discharge line and replaced it with a 3 ft length of 2 hose so I could do the fill test Using the 56 cycle per minute Volume Chart from page 2 I know that at a sucti...

Страница 8: ...t 6 to 7 psi and when the pump is stopped the pressure may hold or slowly returns to 0 4 If you do not get any pressure reading or if the gauge does not get to 4 psi and drops off to 0 as soon as the pump stops clean or replace the suction valve and clean or resurface the valve seat as appropriate See Maintenance Valve Assemblies l Manual Test Testing the pump valves and valve seats without the us...

Страница 9: ...If the cause is not obvious isolate the source Check air line for pressue and flow If ok discon nect the inlet and discharge plumbing from the pump and restart the pump If pump cycles without the plumbing connected there could be a clog in the lines The back pressure caused by a com plete blockage in the inlet and discharge line will stop the pump If the pump cylinder still does not cycle then the...

Страница 10: ...and style of the diaphragm used Call Edson Customer Service for details 4 Problem Pump base and or lines keep filling with solids Possible Causes a Line velocity is too slow to keep the solids in suspen sion b The percent of solids is too high Action Speeding up the pump will help increase the velocity Using a strainer can reduce the size and percent of solids Diluting the slurry by increasing the...

Страница 11: ... B 388 Head Ring 1 4 20X1 5 16 24 nut 2 Discharge Chamber Adaptor Frame Valve Assembly Valve Assembly Air Cylinder 161 A 416 5 16 18 x 1 113N 0 Nitrile Diaphragm 160 A 906 Lower Standard 160 A 1200 Sealing Washer 3 8 16 x 1 160 B 68B 2 Suction Chamber 160 B 50B 200 160 G 107 160 G 107 160 C 298 Pump Base 1 4 20 x 1 161 C 476 161 A 403 Upper Standard 1 4 20X1 5 16 24 nut 2 Discharge Chamber Adaptor...

Страница 12: ...er Standard 1 4 20X1 5 16 24 nut 2 Discharge Chamber Adaptor Frame Valve Assembly Valve Assembly 161 D 69 Frame 161 C 389 Leg 161 A 147 Handle Nitrile Order No 114N 117 120 1 Diaphragm 113N 0 2 Valve Assemblies 160 G 107 2 Sealing Washers 160 A 1200 Viton Order No 114V 117 120 1 Diaphragm 113V 0 2 Valve Assemblies 160 G 107V 2 Sealing Washers 160 A 1200 P 120A 02 pg 12 Parts 120AWA 200 161 A 166 W...

Страница 13: ...pumps edsonintl com Parts Spares Kits Page 13 Air Cylinder Parts and Maintenance P 120A 02 pg 13 Air Cylinder Part Kits Order No s RPK 121 Rebuild Kit for 120A Includes Parts 161 A 1593 RPK 129 Spring Poppet Kit A 416 Air Cylinder 161 A 1853 Air Cylinder Timing Valve for 120A 161 A 1472 ...

Страница 14: ...146 DUCHAINE BLVD NEW BEDFORD MA 02745 1292 TEL 508 995 9711 FAX 508 995 5021 E MAIL pumps edsonintl com Page 14 Air Cylinder Parts and Maintenance P 120A 02 pg 14 ...

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