INSTALLATION INSTRUCTIONS Liquid Level Switch   Model L-40N (Noryl®) and L-40VCR

SWITCH HOUSING SUPPLIED ONLY AS AN ASSEMBLY OF ENCAPSULATED
SWITCH & LEADS. FLOAT SUPPLIED ONLY WITH ENCAPSULATED MAGNET.

SPECIFICATIONS

Installation Dimensions - Same for L-40N & L-40VCR

COMMON PARAMETERS FOR BOTH L-40N & L-40VCR

PART DESCRIPTION

Sample Part Number

INSTALLATION & OPERATING INSTRUCTIONS

NOTE: Models L-40N and L-40VCR are dimensionally equal and employ the same electrical switch. The only difference is in the material used which affects their chemical resistance. Installation procedures and electrical check out are equivalent so the term "Model L-40" will be used to mean both individual models L-40N and L-40VCR. 

Installation: 

Model L-40 liquid level switch is supplied with a 1-1/4" x 1/4" NPT TT bushing which allows the unit to pass through a 1-1/4" NPT female thread located in the side or top of the tank. Teflon tape is factory applied to the 1/4" NPT end of the switch housing which is threaded into the 1-1/4" x 1/4" bushing and tightened to provide a sealed connection. An arrow on the top of the 1- 1/4" x 1/4" bushing indicates the plane of motion of the float. 

1). Horizontal mounting through side wall of tank. 

A). The male 1-1/4" NPT thread of the 1-1/4" x 1/4" bushing is teflon taped at the factory. Inspect taped threads for uniform tape covering. If teflon tape has been damaged remove and replace with new tape. 
B). Insert model L-40 through 1-1/4" NPT opening in wall of tank, thread 1-1/4" x 1/4" bushing into place and tighten until seal is obtained, as per standard PVC pipe fittings. Tighten additional amount until arrow points vertically upward. 
C). Model L-40 is designed to be field replaceable for "donut" sliding float types with 1/4" NPT on end of switch housing tube. Installation is accomplished thus: 

1). Disconnect old sliding float switch wires and unthread unit from support, e.g. 2" flange, bushing, etc. 2). Clean female threads, apply teflon tape to L40 threads as required, and tighten in place as required to ensure no leaks. 
3). Move L40 float through full travel to ensure float motion is not restricted by adjacent structure. Mark outside surface of flange, bushing etc. to indicate plane of motion and up position of float. See Fig. 1. 

2). Vertical mounting through top of tank. 

A). Same as A) above. 
B). Insert model L40 through 1-1/4" NPT opening in top of tank, thread 1-1/4" x 1/4" bushing into place and tighten until seal is obtained as per standard PVC pipe fittings. Arrow indicates plane of motion of float which may be in any position or a particular position should internal structure interfere with motion of the float. 
C). Field replacement of top mounted "donut" type sliding float level switches is the same as C) above except that indexing the plane of motion of the float is not required except when tank internal structure interferes with float motion. 

Electrical Wiring:

1). Check switch operation with an OHM meter prior to installing to ensure switch is activated when float is moved between stops. NOTE: Switch must be activated and deactivated when float is in a position near but not at stop.

PARTS LIST DIAGRAM

L-40 Noryl
(Series 40100)

PARTS LIST

L-40 Noryl
(Series 40100)

L-40 Ryton
(Series 40200)

L-40 Ryton
(Series 40200)

L-40VCR
(Series 40300)

L-40VCR
(Series 40300)

WARRANTY

Certificate of Conformance

All HARWIL Corporation ("HARWIL") products are manufactured using new materials and components. 
Our products meet the applicable performance and materials specifications indicated in our current Specifications Sheets and Parts Lists. HARWIL endeavors to obtain its materials and components from American Companies.

DOMINANCE OF HARWIL LIMITED EXPRESS WARRANTY

HARWIL warrants that all HARWIL products will be free from defects in material and workmanship for a 
period of one year from the date of original shipment. This warranty shall be limited to the replacement and reconditioning of our products and parts. HARWIL reserves the right and sole discretion to modify or change the composition, design and appearance of its products at anytime.

THIS WARRANTY SHALL BE IN LIEU OF ALL WARRANTIES OF MERCHANTABILITY AND OF ALL WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE RELATING TO HARWIL PRODUCTS AND PARTS. BUYER'S SOLE REMEDY HEREUNTO SHALL BE REPLACEMENT OR RECONDITIONING AS SET FORTH HEREIN.

HARWIL shall incur no obligations hereunder and no liability in the event of (a) buyer not fulfilling its responsibilities, including as set forth herein; (b) neglect, alteration or improper product use, including use with non-compatible devices or chemicals; or (c) repair by other than HARWIL. ANY LAWSUIT RELATING 
TO THIS WARRANTY MUST BE COMMENCED WITHIN ONE YEAR OF THE DATE IT ACCRUES.

Each user of our product should make appropriate analysis and tests to determine the suitability of the product for the intended use prior to purchase. HARWIL provides no warranty and assumes no responsibility for corrosive attack on any material, component or design features associated with any of its products.

Corrosion resistance information listed in HARWIL specification sheets, installation sheets and product brochures is solely for general background information. This table has been compiled from literature 
published by various material suppliers and by equipment manufacturers who use these materials in their products. Inasmuch as these data are based on tests by entities over which HARWIL has no control, HARWIL does not guarantee or accept responsibility for the accuracy of such tests. When using the table, please remember that in any given case several factors such as concentration, temperature, degrees of agitation and presence of impurities influence the rate of corrosion. The guide is intended, in a general way, 
to rate materials for resistance to chemicals which contain their usual impurities and for types of equipment 
in common use. Ratings should be used only as a general guide to first approximation of your material requirements rather than as the final answer.

• When in doubt, test materials before installation.
• After installation, follow up with preventative maintenance and periodic inspection.