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HIGH PRESSURE PUMP REPAIR INSTRUCTION 

SERIES EP-12-34 / EP-14-34 / EP-17-34 

 

Disassembly sequence of the front end of the ECH

2

O Tec. high-pressure pump. 

Refer to the pump diagram. 

 

1) 

Remove the three discharge valve plugs and the three inlet valve plugs (32), with a 22 mm socket 

wrench.  Inspect the O-ring (33) for wear and replace if damaged. 

 
2) 

With  needle  nose  pliers,  remove  the  inlet  and  discharge  valve  assemblies  (32X).    Insert  a  small 

screwdriver  between  the  valve  seat  (27)  and  the  valve  spring  retainer  (30)  to  separate  the  valve 
assembly.  Remove the O-ring (31).  Inspect all parts for wear and replace if necessary. 

 
3) 

Next, use a 5 mm Allen wrench to remove the 8 socket head cap screws (34).  Carefully slide the 

valve casing (26) out over the plungers.  Remove the weep return ring (25), pressure ring (24) and 
V-sleeve with support ring (23), from the valve casing (26). Remove the V-sleeve (23) from the seal 
case (20).  Inspect all parts, including O-ring (21) for wear and replace if necessary. 

 
4) 

Check  surfaces  of  plunger  (16).    A  damaged  surface  will  cause  accelerated  wear  on  the  seals.  

Deposits of any kind must be carefully removed from the plunger surface.  

 

A damaged plunger must be replaced! 

 
5) 

If the ceramic plunger (16B) is damaged, remove the plunger bolt (16C).  Discard the old plunger 

(16B) and copper gasket (16D) and clean the old Locktite from the plunger bolt (16C) and plunger 
base (16A).  Replace the plunger with the new one and Locktite the plunger bolt and torque to 120 
inch-pounds. 

 

NOTE: If there are deposits of any kind (i.e., lime deposits) in the valve casing, be certain that the 
weep holes in the weep return ring and valve casing have not been plugged. 
 

6) 

If the crankcase oil seals (19) are to be replaced, they can be removed by prying loose.  Take care 

not to make contact with the plunger.  If the oil seals are not to be replaced, proceed to the back end 
disassembly sequence and carefully pry the seals loose after the plungers have been removed from 
the crankcase.  

 

Disassembly sequence of the back end of the ECHO Tec. high-pressure pump. 
 

1) 

Before beginning, drain the oil from the crankcase, through the oil drain (3A). 

 
2) 

Remove the crankcase cover (3) and O-ring (4) from the crankcase (1).  To remove the crankshaft 

(13), remove the bearing cover (7) and sight glass (8).  Using a rubber mallet, remove the crankshaft 
axially through the connecting rods by tapping on the end of the shaft.  Do not bend or damage the 
connecting rods during crankshaft removal. 

 
3) 

Next remove the remaining bearing and radial shaft seal (11).  Inspect both bearings and seal for 

wear and replace if necessary. 

4) 

Remove the connecting rod (15), then the plunger (16) and wrist pin (17), if necessary.  Check the 

plunger bore in the crankcase for wear.  Inspect parts and replace as necessary. 

Summary of Contents for Watermakers 1200-BML-3

Page 1: ...NUAL Pages 2 INTRODUCTION 3 SPECIFICATIONS 4 5 STANDARD SYSTEM FEATURES OPTIONS AND ACCESSORIES 6 FLOW DIAGRAM 7 9 INSTALLATION INSTRUCTIONS 10 INSTALLATION INSTRUCTIONS OPTIONS 11 13 SYSTEM OPERATION...

Page 2: ...st products on the market The purpose of this manual is to allow you to become familiar with each component of your new ECH2O Tec Watermaker By understanding the function importance and normal operati...

Page 3: ...rated performance is tested at 26 C 80 F water temperature and 33g NaCl ltr RO MEMBRANE TYPE Standard size high rejection TFC Polyamide thin film composite spiral wound single pass reverse osmosis ele...

Page 4: ...gh pressure gauge 1 Product flow meter 25 50 100gph 1 Diverter 3 way valve 1 Breaker 10amp or 2 Breakers 10 amp with optional boost pump 6 1 Hardener pH neutralizer kit with mineral element and 2pcs 3...

Page 5: ...al cartridge stainless steel bracket 8 screws shut off valve 2 x 5 8 hose barb connectors 10ft 1 2 braided hose 4 x 1 2 hose clamps Low pressure gauge The low pressure gauge indicates when the pre fil...

Page 6: ...ermakers DATE 31 05 06 REV 3 1 DRWN MS BOOST PUMP FRESH WATER FLUSH FILTER FILTER STRAINER FILTER PUMP FILTER 5 20 PSI PSI FLOW REJECT WATER REJECT WATER OUTLET CLEANING STORAGE SOLUTION INTAKE R O ME...

Page 7: ...ld only do the electrical installation Connect the wire of the magnetic clutch to the system switch on the control panel Supply 12V DC to the switch This wire needs to be protected by a 10A fuse When...

Page 8: ...h storage valve is supplied connect the 3 4 hose fitting on the tee to the bottom intake fitting of the high pressure pump INSTALL ALL PLUMBING TO ELIMINATE ANY AIR POCKETS IN THE SYSTEM CAUTION USE A...

Page 9: ...your water tanks into the R O membrane and does not require a new fitting in your tank When using a spigot as the taste test station be sure you have no shut off valves in the product water line A han...

Page 10: ...plied nylon nipple to the standard filter housing and reconnect the reinforced vinyl hose The 5micron cartridge has to be installed as the second filter in flow direction 5MICRON PRE FILTER HOUSING WI...

Page 11: ...Switch on the boost pump optional and the electro magnetic clutch 7 Flush the air out of the system Check the brine discharge at the output location Caution Never allow any leaks in your hose or tube...

Page 12: ...ow rate of your vessel s fresh water system pump 6 Close the seawater intake valve MEMBRANE STORAGE PROCEDURE If you intend to store your watermaker for more than 7 days growth of microorganism will d...

Page 13: ...bel CAUTION Do not mix different cleaning chemicals together Do not use different cleaning chemicals together at the same time Mix the cleaning chemicals separately and use them separately Note All cl...

Page 14: ...applicable When brushes are worn out High pressure pump Change crankcase oil Change packing seals and O rings Initial change after 50 hrs Every 200 operating hours or 6 months Every 5000 hrs or 2 year...

Page 15: ...s inner wall and remove it in one fast pull 6 Inspect the end plug for hairline cracks or damages on the O rings and O ring grooves 7 Pull the membrane on the product pipe out of the pressure vessel o...

Page 16: ...recommended lubricant SAE 90 gear box oil non detergent Check inlet lines for restrictions and or proper size Check strainer and filter s Inability to build up pressure Discharge valve chamber has ai...

Page 17: ......

Page 18: ...16B and copper gasket 16D and clean the old Locktite from the plunger bolt 16C and plunger base 16A Replace the plunger with the new one and Locktite the plunger bolt and torque to 120 inch pounds NOT...

Page 19: ...s 12A and 12B if they were removed from the crankshaft Be certain the bearings are pressed all the way onto the shaft and completely into the crankcase Replace radial shaft seal 11 bearing cover with...

Page 20: ...s Service Center The purchaser must pay any transportation or labor expenses incurred in removing and returning the product A return authorization must be obtained before any part or component is ship...

Page 21: ...nger of the Reverse Osmosis Membrane Element s fouling or drying out Therefore we can ship your system without the Membrane s This allows you to install the system at the appropriate time in your sche...

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