14
AIM-OM-ATX-3, Rev. 2.1, 05/15
• Copyright Orenco Systems
®
, Inc. Property of Orenco Systems
®
, Inc. Do not reproduce or distribute without written authorization from Orenco: 800-348-9843.
AdvanTex
®
O
&
M
MANUAL
C O M M E R C I A L T R E A T M E N T S Y S T E M S
Inspection Points – Vent Fan Assembly
A current sensor monitors
the vent fan operation. If
the fan fails, this sensor
will open and activate
an alarm. Some vent fan
assemblies are equipped
with optional heater units
for reliable performance in
cold weather. Check your
system plans to determine if your vent fan assembly includes a heater.
1.
Current sensor operation:
To test the current sensor, switch off
the power to the fan and verify the visual alarm on the control panel
is activated.
NOTE:
TCOM control panels have a 12-hour delay in the audible
alarm for the current sensor.
2.
Optional heater unit:
There are two types of heater unit controls
available for vent fan assemblies: a single set-point style and a
multiple set-point style. If your system is equipped with an optional
heater unit, check your system plans to determine the type of heater
included in the vent fan assembly.
• Single set point — Locate the heater inside the vent fan assembly
enclosure, remove the heater cover in the vent fan assembly, and
set the thermostat to 43° F (6° C).
• Multiple set points — In the control panel, set the “Heater On”
point at 35° F (1.6 °C), “Heater Off” point to 45°F (7.2 °C), “Fan
On” point to 35°F (1.6 °C), and “Fan Off” point to 25°F (-3.8 °C).
Inspection Points – Distribution Valve
To verify that the distribution valve is operational, the valve must be
hydraulically loaded with the conditions under which it will operate. Use the
system plans to find the location of all distribution valves in the system.
1.
Verify liquid level:
Make sure that the tank or basin that you are
pumping from has sufficient liquid to perform the test.
WARNING:
There is no motor protection in TCOM panels and
panels without “RO” alarms. Before running a pump, always
verify that there is sufficient liquid in the tank or basin.
2.
Turn on pump:
Toggle the “AUTO-OFF-MAN” switch for the pump
that pressurizes the distribution valve to “MAN.”
3.
Leak inspection:
Once
the distribution valve is
pressurized, inspect the
unions on the distribution
valve for leaks. Tighten any
unions that are leaking.
4.
Operation inspection:
Open and close the ball valve
to test the operation of the
distribution valve.
• When the valve is closed and opened, the flow should transition
from one leg of the valve to another. Observe the clear section of
the leg to verify this transition. There may be flow in more than
one leg, but there should only be full flow in one leg at any time.
• When the ball valve is fully closed, the system will fully pressurize
(deadhead condition). Incorrectly installed connections in the line
may separate and require reinstallation before testing can be
completed.
• If the distribution valve does not rotate correctly, open the
distribution valve and inspect for debris or breakage. If the
problem is not a mechanical issue, review the plans for potential
installation issues, including elevation.
Housekeeping
1. Verify that all control panels are turned on and all “AUTO-OFF-MAN”
switches are toggled to “AUTO.”
2. Close all control panels.
3. Close and bolt down all tank access lids and riser lids.
WARNING:
AN UNBOLTED RISER LID OR OPEN TANK IS A
SAFETY HAZARD! Tank and riser access lids must be properly
secured at all times. If bolts are lost or damaged, contact Orenco
immediately for replacements.
4. Police the area for
debris and tools.
Inspection Points (continued)
