Page 5Diatomaceous Earth Pool Filters - DEL Series Filter
Section 2. General Information
2.1 Introduction
This manual contains information for the proper instal-
lation and operation of the Jandy® DEL Series Diato-
maceous Earth (DE) Filters. Procedures in this manual
must be followed exactly. To obtain additional copies of
this manual contact us at 707.776.8200
ext. 237. For address information see back cover.
2.2 Description
Dirty water flows into the filter through the lower bulk-
head on the bottom of the tank and is directed through
the DE grids. The debris is collected on the surface of
the grids as the water flows through them. The clean
water is directed into the manifold, then through the
outlet tube, and finally, out of the filter through the up-
per bulkhead on the bottom half of the tank. The filtered
water then goes into a MPV (Multiport Valve) and is
returned through the piping system to the pool.
As debris collects in the filter, the pressure will rise
and water flow to the pool will diminish. The filter will
eventually become so plugged with debris that it will
be necessary to perform the backwash procedure. It is
important to know when to backwash the filter. See Sec-
tion 6 for further discussion of backwashing the filter.
NOTE A filter removes dirt and other suspended particles
but does not sanitize the pool. Pool water must be
sanitized and chemically balanced for clear water.
The filtration system should be designed to meet
local health codes. At a minimum, the system should
turnover the total volume of water in your pool two to
four times in a 24 hour period.
2.3 General Requirements
1. For best overall performance place the system as
close to the pool as possible.
2. The filter should be located on a level concrete
slab so that the orientation of the valve outlets and
the pressure gauge are convenient and accessible
for the installation and operation of the unit.
3. Protect the filter from the weather.
4. If fitting a chlorinator and/or any other device into
the filtration plumbing circuit, great care must be
xercised to ensure that the appliance is installed in
accordance with the Manufacturer’s Instructions
and any standards that may exist.
5. We recommend the use of barrel unions to connect
each component of the water conditioning system
to ease in future servicing. Barell unions are
provided with all Jandy filters.
6. When performing hydrostatic pressure tests or
when testing for external leaks of the completed
filtration and plumbing system, ensure that
the maximum pressure the filtration system is
subjected to does not exceed the maximum
working pressure of any of the components
within the system.
2.4 DE Requirements
See your local pool distributor or dealer for DE type
recommendations. See Table 2 on page 9 for the amount
of DE to be used.
2.5 Specifications and Dimensions
See Table 1 and Figure 1.
DEL48 DEL60
Filter Area (ft2)4860
Design Flow Rate (gpm/ft2) 2.00 2.00
Max. Flow (gpm) 96 120
Six Hour Capacity (gal.) 34,560 43,200
Normal Start Up Pressure (psi) 6-15 6-15
Max. Working Pressure (psi) 50 50
Dimension "A" 41 in 47 in.
Table 1. DE Filter Specifications
WARNING
The maximum working pressure for this filter is 50
psi. Never subject the filter to pressure exceeding 50
psi, even when conducting hydrostatic pressure tests.
Pressures above 50 psi can cause the lid to be blown
off.
Figure 1. Dimensions, Jandy DEL Series Filter
with Jandy NeverLube®Backwash Valve
INLET
OUTLET
"A"
18½"
10½"
25"
