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THIS SYSTEM OPERATES UNDER HIGH PRESSURE.
When any part of the circulating system (e.g., Lock Ring, Pump, Filter, Valves, etc.) is serviced, air can enter the system and become
pressurized. Pressurized air can cause the lid to separate which can result in serious injury, death, or property damage. To avoid this
potential hazard, follow the instructions below.
Filter Operation Information
Read and follow all instructions and warnings before
installing or servicing your FNS
Filter. Proper installation and operation can prevent
unnecessary repairs and maintenance.
1. This filter operates under pressure and operates in
a safe manner if clamped properly and without air
in the circulating system.
2. The maximum working pressure of this filter is 50
psi. Never subject this filter to pressure in excess
of this amount, even when conducting hydrostatic
pressure tests.
3. Be sure the maximum working pressure of the filter
system does not exceed the maximum working
pressure of any components within the system
during hydrostatic or external leak tests. Consult
the maximum pressure stated on each component
of the system.
4. The pressure gauge is the primary indicator of how
the filter is operating. Maintain your pressure gauge
in good working order.
5. If filter operates without diatomaceous earth (D.E.)
for more than three (3) minutes, filter elements may
be damaged.
Maintaining the Pressure Gauge
The pressure gauge is the primary indicator of how the
system operates. It is critical to keep the pressure gauge in
good condition.
Replace pressure gauge (P/N 190059) if any of the
requirements below are not met:
1. Pressure gauge at zero (0) when pressure is
relieved and system is turned off.
2. Pressure gauge reads correctly while system is in
operation.
3. The pressure gauge is readable and not damaged
in any way.
Plus Vertical Grid D.E.
®
GENERAL INFORMATION
Pressure Tests
When performing hydrostatic pressure tests or when
testing for external leaks of the completed filtration and
plumbing system, ensure that the Maximum Pressure
that the filtration system will be subjected to DOES NOT
EXCEED THE MAXIMUM WORKING PRESSURE OF ANY OF THE
COMPONENTS CONTAINED WITHIN THE SYSTEM.
In most cases, the maximum pressure will be stated on
each component of the system. If doubt exists as to the
pressure to which the system will be subjected, install an
ASME approved automatic Pressure Relief or Pressure
Regulator in the circulation system set to the lowest
working pressure of all of the components in the system.
RISK OF ELECTRICAL SHOCK OR
ELECTROCUTION.
Position the filter and High Flow manual air relief
valve to safely direct water drainage and purged
air or water. Water discharged from an improperly
positioned filter or valve can create an electrical
hazard that can cause severe personal injury as
well as damage property.
FNS
PLUS Vertical Grid D.E. Filter Installation and User' s Guide
®
1
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