Start-Up And Operation; Preparing Diatomaceous Earth; Coating The Filter Grids - Jandy DEL Series Installation And Operation Manual

Jandy ® Filters
SECTION 4.

Start-Up and Operation

!
Warning
NEVER start pump while standing within five (5)
feet of the filter. Starting the pump while there is
pressurized air in the system can cause the
filter lid to be blown off, which can cause death,
serious personal injury or property damage.
!
Warning
NEVER operate the filter system at more than
50 psi of pressure. Starting the pump while there
is pressurized air in the system can cause the
filter lid to be blown off, which can cause death,
serious personal injury or property damage.
! Warning
Changing the multiport valve handle while there
is pressurized air in the system can cause the
filter lid to be blown off, which can cause death,
serious personal injury or property damage.
!
Caution
Dust released during normal handling of diatomaceous
earth can cause eye and respiratory irritation.
Prolonged breathing of excess concentrations of dust
may cause lung damage.
!
Caution
Never operate filter in excess of three (3)
minutes without use of diatomaceous earth
(DE). DE is the substance that filters the water,
the filter cloth merely supports the DE. Operat-
ing without DE will damage filter grids and
shorten filtering cycles.
!
Caution
DO NOT operate filter at water temperatures
above 120° F (65.5° C). Water temperatures
above the manufacturer's recommendations will
shorten the life span of the filter, and void the
warranty.

4.1 Preparing Diatomaceous Earth

Your filter requires diatomaceous earth (DE) for proper
filtration and operation. The filter grids must be precoated
with DE in order to protect their surfaces and provide the
most efficient filtering action. Refer to Table 3 for the proper
quantity of DE to use with your filter.
1. Using a one (1) pound coffee can, fill the can with
diatomaceous earth (DE). Do not pack or compress the
DE into the can.
2. Mix the required amount of DE with sufficient water in
a separate bucket to make a thin, milky mixture (slurry).
Note: Excess DE will clog the system. Use amount
specified in this manual.
3. Use the following instructions to coat the filter
grids.
Table 3. DE Slurry Mixture
Model DE Quantity
Number (lbs.) (kg.)
DEL48 5.0
DEL60 6.0

4.2 Coating the Filter Grids

1. Prepare recommended amount of DE as outlined in
Section 4.1.
2. Start the filter system as outlined in Section 4.3.
3. With the pump running and the pool skimmer valve
open, slowly pour the mixture directly into the pool's
skimmer basket. The slurry will be drawn into the filter.
4. After coating of grids, rotate the bezel of the
pressure gauge so that the arrow next to the word
"CLEAN" is aligned with the needle of the gauge. This
marks the original starting pressure of the system.
5. Clean the filter when the pressure of the system
increases so that needle of the gauge aligns with the
arrow next to the word "DIRTY" on the bezel of the
gauge. This indicates an increased pressure of
between 10 and 12 psi above original starting pressure.
Page 9
No. of 1 lb.
coffee cans
2.0 10
2.7 12