Level Plus
®
LevelLimit
®
Operation Manual
I
21
I
9.2 Tools
9.2.1 Tools for Flexbile Hose
• 9/16
"
Socket and ratchet
• Channel Lock pliers
• 3/16
"
Hex Key (Allen wrench)
• 1
"
Open End wrench
9.2.2 Tools for Rigid Pipe
• Channel Lock pliers
• 9/64” Hex Key (Allen wrench)
• ¾” Open End wrench
9.3 Inspection
Below are some standard items that should be inspected on a
regular basis to make sure that the level transmitter and surrounding
environment are in operating condition.
• Hazardous Area Label is present and legible
• Hazardous Area approval is correct for installation
• There are no visible unauthorized modifications
• Electrical connections are tight
• Condition of enclosure gasket is satisfactory
• No water ingress (white powder)
• No obvious damage to cable
• Sealing of conduit or cable gland is satisfactory
• Earth ground is satisfactory
• Single or Dual Cavity Enclosure threads are not damaged
• Housing and O-ring are not damaged or cracked
• No corrosion on visible parts
• Printed circuit boards are clean and undamaged
• Manual HI Level test cable present and not damaged
• Cord Grip connected to 4” NPT adapter and tight
9.4 Preventative maintenance
Level Plus
®
level transmitters do not typically require preventative
maintenance but may require preventative maintenance dependent on
the application. For general purpose applications where there is no
potential for buildup on the flexible hose and/or float there is no need
for preventative maintenance but routine inspection is still suggested.
For severe service applications where there is potential for buildup
on the flexible hose and/or float then preventative maintenance is
required.
9.4.1 General purpose applications
9.4.1.1
Perform Inspection suggested in chapter 9.3.
9.4.1.2
No additional preventative maintenance is necessary. Preventative
maintenance suggested for Severe Service Applications may be
performed.
NOTE
It is best to clean the hose/pipe as it is removed from the tank to
minimize the amount of product that is removed from the tank. The
user should take caution and abide by all regulations so that product
is not spilled and the environment is not contaminated.
9.4.2 Severe Service Applications
9.4.2.1
Perform Inspection suggested in chapter 9.3.
9.4.2.2
Disconnect Power.
9.4.2.3
Disconnect process connection from tank. Remove flexible hose or
rigid pipe from tank.
9.4.2.4
When the bottom of the hose/pipe is reached inspect the floats.
9.4.2.4.1
If the floats are highly contaminated then remove the assembly from
the tank and remove the floats from the hose/pipe.
9.4.2.4.2
If the floats are slightly contaminated then clean the floats without
removing the floats from the hose/pipe.
9.4.2.5
Replace flexible hose or rigid pipe and floats in tank.
9.4.2.6
Connect process connection to tank.
9.4.2.7
Connect Power.
9.4.2.8
The process should be carried out regularly until a consistent pattern
has been established as to how long the intervals between cleanings
should be.
