General Information; Introduction; Description; General Requirements - Jandy DEL Series Installation And Operation Manual

Jandy ® Filters
SECTION 2.

General Information

2.1 Introduction

This manual contains information for the proper
installation and operation of the Jandy® DEL Series
Diatomaceous 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
bulkhead 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 upper 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 Section 6
for further discussion of backwashing the filter.
Note that 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 at least two times in a 24 hour
period.

2.3 General Requirements

1. For best overall performance locate the filter as
close as possible to the pool.
2. The filter should be located on a level concrete slab so
that the orientation of the valve outlets and 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 exercised
to ensure that the appliance is installed in accordance
with the Manufacturer's Instructions and any other
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. 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.
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

1. See your local pool distributor or dealer for DE type
recommendations. See Table 3 on page 9 for quantity
to be used.

2.5 Specifications and Dimensions

1. See Table 1 and Figure 1.
Table 1- Specifications
Specifications
2
Filter Area(ft )
Design Flow Rate (gpm/ft
Maximum Flow (gpm)
Six Hour Capacity (gal.)
Normal Start Up Pressure (psi)
Maximum Working Pressure (psi)
Dimension "A"
18½"
10½"
Figure 1. Dimensions, Jandy DEL Series Filter with Jandy
Backwash Valve
Page 5
DEL48 DEL60
48 60
2
) 2.00 2.00
96 120
34,560 43,200
6-15 6-15
50 50
41" 47"
25"
"A"
OUTLET
INLET