Valve Position And Water Flow Directions - Pentair Sand Dollar SD40 Guide D'installation Et D'utilisation

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This filter operates under high pressure. When any part of the circulating
system (e.g., clamp, pump, filter, valves, etc.) is serviced, air can enter the
system and become pressurized. Pressurized air can cause the lid or control
valve to separate which may result in serious injury, death, or property
damage. To avoid this potential hazard, follow these instructions.
1. Before repositioning valves and before beginning the assembly,
disassembly, or adjustment of the clamp or any other service of the
circulating system:
(a) Turn the pump off and shut off any automatic controls to ensure the system
is not inadvertently started during the servicing;
(b) Open manual air relief valve;
(c) Wait until all pressure is relieved, pressure gauge must read zero (0).
2. Whenever installing the filter clamp, follow the filter valve and clamp
installation instructions exactly.
3. Once service on the circulating system is complete, follow system restart
instructions exactly.
4. Maintain circulation system properly. Replace worn or damaged parts
immediately (e.g., clamp, pressure gauge, relief valve, o-rings, etc.).
5. Be sure that the filter is properly mounted and positioned according to
instructions provided.

Valve Position and Water Flow Directions

: From pump, through valve, downward through filter sand bed, up
FILTER
through center pipe to valve return port, and back to the pool for normal filter
action and vacuuming pool through filter.
: From pump, through valve, down through center pipe, up
BACKWASH
through filter sand to valve, and out wasteport. This position is used for
cleaning filter by reversing flow.
: From pump, through valve, downward through filter sand, up through
RINSE
center pipe to valve and out waste port. This position is used for start up
cleaning and resettling filter bed after backwashing.
: From pump, through valve, bypasses filter and goes to wasteport.
WASTE
This position is for vacuuming directly to waste, lowering pool level, or
draining pool.
: NO FLOW IN THIS POSITION - DO NOT USE THIS
CLOSED
SETTING WITH PUMP OPERATING.
RECIRCULATING
return port and back to pool. This position is for circulating water without
going through filter.
Pump and Sand Filter System Installation and User's Guide
: From pump, through valve, bypass filter and goes to