Davey CRYSTAL CLEAR FIBRE GLASS MEDIA FILTERS - Manual (Page 4)

50mm pipe must be used with models CCF 28 and above or if the length of piping is
over 15m. 50mm barrel unions are provided at the multiport valve for connection of
PVC pipe to “pump”, “pool return” and “waste”.
NOTE:
Ensure pipework is connected to appropriately labelled multiport
valve connections.
Commissioning Filter
Refer to “operating instructions” below for safety warning and multiport valve
control prior to the filter start-up. The pool should be slightly overfilled and the filter
backwashed and then run on RINSE to prevent dust and fine particles in the media
bed returning to the pool.
1. Backwash the filter.
2. Position the valve handle to “RINSE”.
3. Start the pump and run until water in the valve sight glass becomes clear.
4. Stop the pump and position the valve handle to “FILTER”.
5. Start the pump. The Filter is now in filtration mode.
6. To determine the correct operating conditions, check the pressure gauge
reading is 80kPa or below. Record the clean operating pressure of your filter.
Operating Instructions
WARNING - FILTER OPERATES UNDER HIGH PRESSURE
• Ensure all lids / closures / clamps are correctly secured before
operating system.
• Never adjust clamps or change valve settings with the system
under pressure.
• Relieve all pressure from system before working on filter.
Multiport Valve Control
The flow of water through the filter is controlled by the multiport valve on the top
of the filter tank. The handle on top of the valve can be moved to any one of six
positions, which have the following functions:
Valve Position Function
FILTER Normal filtration and vacuuming through filter.
BACKWASH Clean the filter.
RINSE Used on initial filter start-up and after backwash to
prevent dirt in the sand returning to the pool.
WASTE By-passes the filter; used for vacuuming to waste, or
draining the pool.
RECIRCULATE By-passes the filter to circulating water to the pool or to
boost spa jets.
CLOSED Shuts off all flow to the filter. Do not run pump.
– 4 –