New Pool And Seasonal Start-Up; Valve Operation; Section 5. Filter Disassembly And Assembly; Filter Tank Disassemby/Assembly - Jandy DEL Series Installation And Operation Manual

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4.3 New Pool and Seasonal Start-up

1. Set the fi lter valve (MPV or backwash) to the
"FILTER" position.
2. Open the pump hair/lint pot lid and fi ll the pump
basket with water to prime the system. Replace the
lid. (You may have to do this several times on new
and seasonal start-ups.)
3. Completely open the air release valve on the
gauge/air release assembly by turning the knob on
the back of the assembly fully counterclockwise
(do not remove the knob).
4. Be sure to open any fi lter isolation valves that
were installed in the system and that the fi lter drain
plug is in place.
5. Stand clear of the fi lter and start the pump to
circulate water through the system. When a steady
stream of water starts to come out of the air release
valve, close the valve.
6. If this is a new fi lter, or the fi lter has just been
backwashed, add the DE slurry as described in
section 4.2.
7. Watch the pressure gauge to be sure that the
pressure does not exceed 50 psi in the fi lter for
normal operation. If the pressure approaches these
limits, turn off the pump and backwash the fi lter
(see Section 6.2). If the pressure remains high after
backwashing and reapplying the DE slurry, refer
to the troubleshooting guide on page 13 to identify
possible causes and solutions.
8. After the pressure gauge has stabilized, turn the
bezel ring so that the arrow next to the word
"CLEAN" aligns with the needle of the gauge. As
the fi lter cleans the water, the grids will clog over
time, and the pressure will increase. When the
needle of the pressure gauge aligns with the arrow
next to the word "DIRTY" on the bezel ring, it is
time to backwash the fi lter (see Section 6.2).

4.4 Valve Operation

1. The fl ow of water through a DE fi lter is controlled
by an optional backwash valve or multiport valve
(MPV).
2. The handle on top of the backwash valve or MPV
can be moved to different positions. The function
of each position is described below (see Fig. 7).
NOTE
Depending on the model of backwash valve or MPV
installed with your fi lter, it may have all or only some
of the positions described in Table 3.
Table 3. Valve Positions for Multi Port Valve
Position
FILTER Normal filtration and vacuuming.
BACKWASH Cleaning filter by reversing the flow.
RINSE Used after backwash to flush dirt
from the valve.
WASTE Bypasses filter; used for vacuuming
to waste or lowering water level.
RECIRCULATE Bypasses filter for circulating water
to the pool.
CLOSED Shuts off all flow to the filter and
pool.
Figure 7. Multi Port Valve Handle Positions
Section 5. Filter Disassembly and
Assembly
WARNING
NEVER attempt to assemble, dis as sem ble or adjust
the fi lter when there is pressurized air in the system.
Starting the pump while there is any pressurized air
in the system can cause the fi lter lid to be blown off,
which can cause death, serious personal injury or
property dam age.

5.1 Filter Tank Disassemby/Assembly

1. Backwash fi lter according to the instructions in Section
6.2 (omit this step when fi rst starting a new fi lter).
2. Turn off the pump. Switch off the circuit breaker
to the pump motor.
3. IMPORTANT: Completely open air release valve
on top of the fi lter tank to release all pressure
from inside the tank and system.
4. Close the fi lter isolation valves on the system to
prevent fl ooding. Remove the drain plug located at
the bottom of the fi lter tank and allow the tank to
drain.
Function