ERICKSON 1 FNPT Lil Lena Regulator Instruction Manual
- June 1, 2024
- ERICKSON
Table of Contents
ERICKSON 1 FNPT Lil Lena Regulator Instruction Manual
Specifications
Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1″ FNPT
Seat Ring Orifices . . . . .3/32″, 1/8″, 3/16″,1/4″, 3/8″, 1/2″
Operating Temperature . . . . . . . . . . . . . . -20°F to 180°F
Max. Spring and Diaphragm Housing Pressure
Max. Pressure, Differential Pressure & Outlet Pressure Ranges
Overpressure Protection
As is true with most regulators, the Li’L Lena Regulator has an outlet pressure rating that is lower than the inlet pres-sure rating. Overpressure protec?on is needed to avoid overpressure if the actual inlet pressure can exceed the outlet pressure rating.
Installation, Operation, and Maintenance
Installation
Before you install the Li’L Lena Regulator, ensure that all tubing and piping
have been blown free of debris. Inspect the threads to ensure they are clean
and free of debris. Apply pipe thread compound to prevent pressure leaks at
the connection and thread the regulator onto the pipe. During installation,
take advantage of the Li’L Lena’s capability to adjust the housing position in
four different ways, optimizing space usage.
Ensure that the body is positioned in a way that prevents the accumulation of
moisture or debris in the screened vent. All Li’L Lena regulators come
equipped with a 3/4 NPT vent assembly. If needed, the vent as-sembly can be
removed to install a remote vent line. Opt for remote vent lines with the
largest practical di-ameter, keeping them as short as possible with a minimal
number of bends or elbows. Take precautions to shield the remote vent opening
from rain, snow, or any foreign material that might obstruct the vent or vent
line, hindering the proper opera?on of the regulator. Regularly inspect the
vent opening to ensure it remains unobstructed by foreign debris.
Caution: The Li’L Lena does not relieve pressure automatically. If there’s a possibility of the outlet pressure exceeding the set point, the excess pressure can damage the regulator. It is advisable to incorporate a pres-sure relief device on the downstream side of the regulator to mitigate this risk.
Adjustment / Setting
The permissible pressure settings range is indicated on the nameplate. If an
adjustment beyond this range is required, replace the regulator control spring
accordingly and update the nameplate to reflect the new pressure range.
Important Note: Always use a pressure gauge to monitor pressure during adjustments.
Adjustment Steps:
- Remove the adjusting screw cap.
- Loosen the locknut.
- To increase the outlet pressure setting, turn the adjusting screw clockwise. To decrease it, turn the ad-justing screw counterclockwise.
- Once the desired pressure is achieved, secure the adjusting screw in place and tighten the locknut.
Spring Change
To replace the spring, begin by removing the cap and turning back the adjusting screw. Loosen the bolts securing the spring cover to the housing, using a 7/16” wrench or socket. Swap the existing spring with the desired one, then reattach the spring cover and tighten the bolts. Ensure that the torque applied to the bolts does not exceed 8 ft-lb to prevent any potential cracking of the aluminum spring cover or housing.
Soft Goods Replacement
A Li’L Lena repair kit, inclusive of all so? goods and a disk holder assembly, is available. To initiate the replacement of so? goods, start by removing the cap. Unthread the adjusting screw to release tension from the spring. Unscrew the housing from the body using a 1/2” wrench or socket. Extract the stem, stem guide, disk holder assembly, and boost tube. Replace the stem o-ring, boost tube o-ring, and gas-ket. Remove the cotter pin and detach the disk holder assembly from the stem. Reinsert the stem, en-suring it hooks onto the linkage. Insert the stem guide and boost tube. Integrate the new disk holder assembly into the stem, securing it with the cotter pin. Reattach the housing to the body.
Diaphragm Replacement
Begin by removing the cap and turning back the adjusting screw to relieve spring tension. Loosen the bolts holding the spring cover to the housing with a 7/16” wrench or socket and remove the spring cov-er. Take out the spring and unscrew the screw securing the spring retainer and diaphragm plate to the diaphragm plunger using a 1/2” wrench or socket. Replace the old diaphragm with a new one and rein-stall it by threading the screw back into the diaphragm plunger. Position the spring over the spring re-tainer, reattach the spring cover, and tighten the bolts.
Lubrication
*Lubricants must be selected that meet the service condition temperature requirements. Desco Therm-O-Plate 220 Anti-Seize Coating is recommended on rebuilds to cover most applications.
Parts List
Part Number Matrix
Example Model # LL1TA3805
Li’L Lena Regulator, 1” Body, Threaded Female NPT Connection, 316SS Seat, CR
Disc,
Viton Seals, 3/8” Orifice, 5 to 20 psi Outlet Spring Range.
805 S. Carlton Ave, Farmington, NM 87401
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References
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