IMPORTANT: Before Sealing the LCR-II |
After powering the LCR-II correctly, continue on to the LectroCount LCR-II Setup and Operation manual to setup the LCR-II for operation.
We recommend that you setup and test the LCR-II before closing and sealing the unit. |
Close and Seal the Unit
After setting up and testing the unit, complete the installation by closing and sealing the housing. The LCR-II must be environmentally sealed to protect the electronics against the elements. The LCR-II must also be sealed by a Weights & Measures representative to guarantee that the register is operating at the proper regulatory standards.
1.Secure the cables behind the LCR-II and the cables in the cab with cable ties.
2.If conduit was used during the installation, fill the conduit end inside the LCR-II with silicon RTV (provided with shipment, PN 82575). Read and follow the directions of the Environmental Sealing Guidelines, below.
3.Tighten the cover bolt using a large flat-tip screwdriver or a 7/16” socket. Completely close the gap between the cover and the housing tab. Read and follow the directions of the Environmental Sealing Guidelines, below.
4.Seal the cover bolt and the switch plate bolts with a wire/lead seal. See the Weights & Measures Seals section below.
Environmental Sealing Guidelines
The LCR-II includes sensitive electronic components, including a micro-controller that can be damaged by the presence of moisture. Therefore, it is essential that all conduit ports, the cover, and the shaft seals be adequately sealed by the installer to ensure watertight integrity. The conformal coating on the board and a moisture-absorbing desiccant inside the enclosure mitigates the problem of corrosion due to moisture, but these measures only protect the board from small amounts of moisture trapped inside when the lid is closed in humid conditions. They are not adequate in protecting the unit over time if a continuous leak is present in the enclosure.
Sealing the LCR-II is the Responsibility of the Installer |
There is no product warranty coverage for any water or moisture damage to the LCR-II that results from improper sealing. |
1. Conduit Entrances
The LCR-II housing has 7 conduit entrances, five ½" NPT female threads, and two ¾" NPT. Use only ½" or ¾" NPT male threaded fittings on the conduit entrances. Pressed-in Caplugs or straight (rather than tapered) threads are inadequate for sealing these entrances. Acceptable fittings includes metal or plastic conduit, pipe plugs, or cable glands.
Threads should be treated with PTFE-based “pipe dope”, or a minimum of two revolutions of PTFE tape prior to installation. Engage the threads with a minimum of four full turns. When using cable glands, ensure that the gland is sized properly for the outside diameter of the cable and the elastometric seal around the cable sheath is compressed onto the cable. Use only one cable per cable gland, unless the gland accommodates for multiple cables. When using conduit or Liquid-Tite, ensure that the opposite end is connected to an environmentally sealed device. If the conduit is not sealed at the other device, fill the interior of the conduit at the LCR-II with a silicone rubber sealant–such as RTV–to prevent moisture from running down the conduit into the enclosure.
2. Cover Seals
To seal the LCR-II cover properly, ensure that the O-ring surrounding the cover is fit snug inside the groove, and tighten the cover screw securely.
3. Shaft Seals
Units with internal pulsers have an O-ring around the pulse encoder drive shaft that extends through the bottom of the LCR housing. If a drive shaft adapter was attached at installation, make sure the O-ring around the shaft is securely seated in the counter bore of the casting, covered with the flat washer provided, and held in place with the cotter pin provided. The control switch on the front of the LCR-II is also sealed with an O-ring and held in place by a bushing secured with three socket head cap screws. When replacing a control switch in the field, make sure the O-ring is in place on the switch shaft before reinstalling the switch bushing.
Any water or moisture damage to the LCR-II as result of improper sealing will not be covered under the product warranty. Sealing the LCR-II is the responsibility of the installer.
Weights & Measures Seals
To detect possible intrusions into Weights & Measures approved calibrations on a LectroCount LCR-II, fillister holes have been drilled into the switchplate screw and the latch. To seal according to Weights & Measures standards, a wire is threaded through the fillister holes and closed with a lead seal.
