Elkay EZWSRK - User Manual

This manual describes the Elkay ezH2O® Retro-Fit Bottle Filling Unit, models EZWSRK and LZWSRK, designed for indoor applications. It provides comprehensive instructions for installation, use, and maintenance.

Function Description

The Elkay ezH2O® Retro-Fit Bottle Filling Unit is designed to convert existing Elkay water coolers into bottle filling stations. Its primary function is to provide a convenient and hygienic way to refill water bottles, reducing the need for single-use plastic bottles. The unit integrates with the existing water cooler plumbing and electrical system, offering filtered water dispensing with an electronic sensor for touchless operation. It includes a bottle counter display and filter status indicator to inform users about usage and maintenance needs.

Important Technical Specifications

General:

Application: Indoor use only.
Service: All service must be performed by an authorized service person.
Electrical Supply: Requires a 3-wire recessed box with a Ground Fault Circuit Interrupter (GFCI) for new installations.
Water Supply: Recommended 3/8" O.D. unplated copper tube connect stub with shut-off, 3 inches (76mm) maximum out from the wall.
Waste Outlet: Recommended 1-1/2" O.D. drain stub, 2 inches out from the wall. A 1-1/2" trap is not furnished.
Ventilation: Ensure proper ventilation by maintaining 6" (152mm) minimum clearance from cabinet louvers to the wall.
Mounting: Fastened to the wall using 7/16" bolt holes.
Maximum Inlet Water Temperature: 100°F (38°C).
Maximum Inlet Pressure: If supply pressure exceeds 100 psi, a pressure regulator must be installed to limit inlet pressure to 100 psi or below.

Filter (EWF3000 WaterSentry® Plus Filter):

Capacity: Available in 3000 Gallon or 6000 Gallon options.
Installation: Must be installed in compliance with all state and local laws and regulations. Not for use with microbiologically unsafe or unknown quality water without adequate disinfection.
Mounting: Filter head assembly mounts to the cooler using a bracket and screws. For Bi-Level units, the filter is mounted to the L.H. non-refrigerated unit. An alternate filter mounting location beneath the cooler is available using a retrofit kit.

Dimensions (Standard Rough-In for Left-Hand High, Bottle Filler Low Models):

Overall Height (from finished floor): 51-9/16" (1310mm).
Hanger Bracket Height: 38-3/8" (975mm) to 38-1/2" (979mm).
Orifice Height: 36-13/16" (936mm) to 34-5/16" (872mm).
Rim Height: 31-5/16" (796mm) to 28-13/16" (732mm).
ADA Requirement: 27" (686mm) rim height, 12-1/2" (318mm) orifice height.
Mounting Holes: Six 7/16" x 3/4" (11mm x 19mm) obround holes.
Reduce Height for Children's ADA Cooler: Reduce height by 3 inches.

Dimensions (Alternate Rough-In for Right-Hand High, Bottle Filler Low Models):

Overall Height (from finished floor): 51-9/16" (1310mm).
Hanger Bracket Height: 38-3/8" (975mm) to 38-1/2" (979mm).
Orifice Height: 36-13/16" (936mm) to 34-5/16" (872mm).
Rim Height: 31-5/16" (796mm) to 28-13/16" (732mm).
ADA Requirement: 27" (686mm) rim height, 12-1/2" (318mm) orifice height.
Mounting Holes: Six 7/16" x 3/4" (11mm x 19mm) obround holes.

Dimensions (Alternate Rough-In for Right-Hand High, Bottle Filler High Models):

Overall Height (from finished floor): 57-1/16" (1450mm).
Hanger Bracket Height: 44" (1118mm).
Orifice Height: 38-3/8" (975mm).
Rim Height: 36-13/16" (936mm).
ADA Requirement: 27" (686mm) rim height, 12-1/2" (318mm) orifice height.
Mounting Holes: Six 7/16" x 3/4" (11mm x 19mm) obround holes.

Dimensions (Alternate Rough-In for Left-Hand High, Bottle Filler High Models):

Overall Height (from finished floor): 57-1/16" (1450mm).
Hanger Bracket Height: 44" (1118mm).
Orifice Height: 38-3/8" (975mm).
Rim Height: 36-13/16" (936mm).
ADA Requirement: 27" (686mm) rim height, 12-1/2" (318mm) orifice height.
Mounting Holes: Six 7/16" x 3/4" (11mm x 19mm) obround holes.

Usage Features

Touchless Dispensing:

The unit features an IR sensor for touchless activation, allowing users to place a cup or hand in front of the sensor area to dispense water.
The IR sensor range can be adjusted (settings 1-10, where 1 is closest and 10 is farthest from the sensor).

Bottle Counter:

An LCD bottle counter displays the number of bottles refilled, promoting environmental awareness.
The bottle counter can be reset to zero through the programming menu. Note that once reset, the previous count cannot be recovered.

Filter Status Indicator:

A GREEN LED light illuminates to indicate good filter status.
The filter monitor can be reset through the programming menu.

Unit Type Settings:

The unit can be configured for "REFRIG" (refrigerated product) or "NON-RFRG" (non-refrigerated product) operation.
"REFRIG" units estimate flow rate at 1.0 gallon per minute, while "NON-RFRG" units estimate 1.5 gallons per minute. Both settings simulate 1 bottle as 20 oz.

Programming Button:

A programming button on the control board (located under the top cover) allows access to various settings:
- Reset Filter Monitor ("RST FLTR").
- Adjust IR Sensor Range ("RNG SET").
- Set Unit Type ("UNIT TYP").
- Select Filter Capacity ("FLT SIZE").
- Reset Bottle Count ("RST BCNT").
An alternate reset button may be located on the lower part of the water cooler for Bi-Level models.

Maintenance Features

Filter Replacement:

The unit uses an EWF3000 WaterSentry® Plus Filter cartridge.
Filter replacement involves removing the top cover, detaching the old filter from the filter head, and inserting a new one by firmly inserting and rotating clockwise.
The filter monitor should be reset after filter replacement.

Wiring Modification for Bi-Level Coolers:

Specific wiring modifications are required for non-refrigerated units in Bi-Level coolers if the bottle filler counter continuously advances without water flow. This involves reversing specific power cord wires using provided adapters (female to female, male to male) to ensure correct counter operation.

Troubleshooting:

The manual provides detailed plumbing diagrams for various configurations (Non-Pressurized, Pressurized, Bi-Level, Filter Installation) to aid in troubleshooting and proper installation.
Instructions for verifying control board software (BF11 or BF12) are included to ensure correct unit functionality.

General Maintenance:

Regular inspection for leaks is crucial after installation and during operation.
The unit is designed for easy access to internal components for service, with removable lower front panels and basin assemblies.
The grounding of electrical equipment to water lines is a common procedure, but the manual emphasizes using plastic drain fittings to electrically isolate the fountain from the building plumbing system to prevent electrolysis and metallic taste in the water.