Level Monitor
4-1
Thermo
Scientific
Section
4
Installation
Factory Installation
The level monitor is not normally mounted at the factory when purchased
with a storage tank. Connect the level monitor electrically as shown on the
wiring diagram included with the equipment. Adjust the level monitor as
described in the ADJUSTMENT section of this manual. Refer to the
TECHNICAL CHARACTERISTICS section for the switch contact full load
rating limits for the external equipment.
Field Installation
The following procedures are the recommended method(s) for installing the
level monitor unit(s) when not factory installed.
Note
To ensure proper installation, installation should be done by qualified
personnel. Read these procedures thoroughly. If any portion of them is unclear
to you or you have unanswered questions concerning them, contact Technical
Services before proceeding.
1. Install a 3/8 inch NPT tin-lined (for distilled water storage tanks) spud 24
inches (610 mm) from the top of the tank as shown in Figure 4-1. If the
spud cannot be located 24 inches (610 mm) from the top of the tank,
locate the spud as close to 24 inches (610 mm) as physically possible.
Note
Installation in a Thermo Scientific tank (cylindrical), refer to the tank
manual to properly install the Level Monitor in the proper port.
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2. Install the U-tube assembly in the spud; then install the level monitor
controller into the U-tube assembly using Teflon® ribbon tape on the
piping connections.
C
aution
Do not tighten the level monitor by hand by holding the case. To
avoid leaks and damage to the case, use a parallel jaw wrench on the level
monitor’s hexagonal fitting.
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3. Connect the level monitor to the LWCO box (twist lock cord) and the
power side to a 12W receptacle per the Wiring Diagram provided in the
enclosed operating manual on CD. Refer to the TECHNICAL
CHARACTERISTICS section for the switch contact full load rating limits
for the external equipment.
4. Adjust the level monitor as described in the ADJUSTMENT and
MAINTENANCE sections in the operating manual.
Note
Level Monitor has been preset to the following set points. SW1 = 17”
and DB1 = 7”. Refer to Programming Flow Chart to make adjustments to suit
your tank.
