Horizon Reverse Osmosis Seafari Versatile SFC-1400-2, Owner'S Manual

Page: 108 / 162

HRO
Systems
Horizon
Seafari
“Section K” Maintenance and Repair
Page K - 7
11. High Pressure Pump [26]: refer to page L – 10
and L – 11 in the Users Manual:
Problem or Failure Signs and possible causes
(troubleshooting):
Problem: Pulsations at the low pressure gauge, at
the High Pressure Gauge and/or at the Brine
Discharge Flow Meter.
Possible Cause(s):
•
Worn or broken Valve
•
Worn or broken Valve Spring
•
Worn or broken Valve Seat
•
Debris in Valve Chamber
Check Valve Chambers for debris and inspect
Valves. Replace Valve assemblies as necessary
Problem: Water Leak between the High Pressure
Pump Manifold and Rear Section.
Possible Cause: Worn Seals or Seals damaged
due to running dry. Inspect Seals and change if
necessary.
Problem: Flow drops dramatically when
attempting to pressurize and there is no flow at the
Product Flow Meter.
Possible Cause(s)
•
Worn Seals
•
Seals damaged due to running dry
•
Broken Valve
•
Broken Valve Spring
•
Debris in Valve Chamber
Check Seals and Valve Chambers.
TORQUE SPECIFICATIONS:
Item Description
Qty Ft. Lbs of
Torque
9 Screw SHCS 18mm Long 4 7.3
12 Screw SHCS 16mm Long 8 7.3
17 Screw HHCS 20mm long 1 10
29 Nut, Plunger Rod 3 7.3
45 Valve Plug 6 3.5
47 Screw SHCS 25mm Long 4 8
48 Screw SHCS 35mm Long 4 8
High Pressure Pump Drive End Disassembly for Servicing
& Trouble Shooting
a. Servicing The Valves:
Tools required: 3/8” Drive Ratchet; 3/8” Hex
Socket; O-Ring Pick; Torque Wrench; Needle
Noise Pliers.
1) Only one valve kit is required to repair all of
the valves in one pump. The Valve Kit (HRO
HPP VK 4.2/SS) includes new valve O-Rings,
valve seats, valves, springs, and cages, all pre-
assembled.
2) All of the inlet and discharge valves can be
serviced without disrupting the inlet or
discharge plumbing.
3) To service any valve, remove the valve plug.
4) Examine the valve plug O-Rings and replace
them if there is any evidence of cuts, abrasions
or distortion.
5) Remove the valve assemblies (cage, spring &
valve seat) by pushing the valve cage in any
direction to unseat it then lift the valve cage
assembly out with needle noise pliers.
6) Clean the Valve Seat Chamber of all debris,
deposit build up and corrosion.
7) Inspect the manifold for wear or damage.
8) Insert a new valve assembly and squarely push
it into place in the valve cavity.
9) Replace the valve plug and tighten it to the
proper torque specification.
b. Removing The Manifold & Seals:
Tools Required: 3/8” Drive Ratchet; 5mm Hex
Socket; Packing Extractor; and Colette.
1) Remove the manifold bolts and locking
washers
2) To separate the manifold from the crankcase,
grasp the manifold with both hands and pull
straight off.