
Rainman Technology Pty Ltd
49 Orchard Road
Brookvale, NSW 2100
Australia
www.rainmandesal.com
support@rainmandesal.com
Introduction
In rare circumstances, pressure gauges require replacing. For a portable Rainman, this means the internal spine between the pressure vessels requires removal and disassembly for access to the gauge. Different configurations for portable Rainman RO units exist, so slight modification to this procedure may be required.
If you are changing the pressure gauge on a Rainman modular or framed system, please see this manual.
Remove RO Spine Assembly
- The RO case has four large black cable ties holding the system together. The outer two cable ties hold the white pressure vessels snug to the shell. Cut these outer two cable ties. Some models might have slightly different configuration.
- Two retaining plates hold the pressure vessel end cap into place. Loosen the two bolts with 5mm Allen key.
- Cut the other two cable ties holding the white pressure vessels together.
- Pull the stainless steel tube so the entire spine subassembly slides up the pressure vessels. The end cap will come out of the pressure vessel.
Disassemble Spine Assembly
- Remove the top cover of the spine to expose the valve / gauge assembly. It can now be dislodged from the spine base.
Replace Pressure Gauge
- Wrap threads of new pressure gauge four or five times with thread seal tape. Screw gauge in to tee tightening by hand.
- Tighten pressure gauge using spanners on tee fitting. Ensure the orientation of pressure gauge is correct as you prefer.
Reassemble RO Unit
- Reinstall the new spine assembly in the same manner as it came out. Ensure O-rings are greased with food grade grease before pushing the new end cap into RO housing
- Reinstall large cable ties that hold the white pressure vessels snugly around the spine subassembly. Tighten cable ties by grasping the end with pliers or wire cutter and twisting.
- Install the pressure vessels back into blue case and secure it with two large cable ties. Tighten cable ties same way as done in the previous step.
- Cut the white product water hose so the flow meter can easily fit within the blue spine for storage and be set into the hole during use. Approximately 60cm from the end of the start of the hose to the bottom of the flow meter should give enough slack to easily stow it and use it.