WaterLogic WL900 User manual

WL900 Manual Page 42 – Revision: 5-12-2021
WL900 INSTALLATION, FILTER FLUSHING, AND SANITIZING PROCEDURES
DANGER! ELECTRICAL SHOCK HAZARD.
Only qualified personnel who have read and understand this entire manual should
attempt to install, or service this WL900 Water and Ice Machine, failure to do so could
result in death or serious injury. DO NOT plug into an electrical supply until specifically
instructed. Always unplug (isolate from power supply) to prevent electrical shock except
where electrical tests are specified.
WARNING! ALWAYS SANITIZE BEFORE USE.
Sanitize before use to eliminate any potential microbiological contaminates.
CAUTION! DRIP TRAY DRAIN.
The WL900 Water and Ice Machine has a built-in, pre-plumbed drain line running from
the drip tray to an external bulkhead. This connection must be completed to a drain for
proper operation.
WARNING!USE PROPER PERSONAL PROTECTIVE EQUIPMENT
Always ensure proper ventilation and use proper personal protective equipment such as
gloves and eye protection when using chemicals. Refer to Material Safety Data Sheet for
specific requirements of each chemical product. Take all necessary precautions to
prevent sanitizer from contacting eyes, clothing, and any other surfaces in could damage
(carpets).
CAUTION! HOT CIRCUIT IS NOT SANITIZED.
Water in the hot circuit is not sanitary until the temperature exceeds 77°C (171°F) for at
least 5 minutes.
CAUTION! INDOOR USE ONLY.
The WL900 Water and Ice Machine has a built-in, pre-plumbed drain line running from
the drip tray to an external bulkhead. This connection must be completed to a drain for
proper operation.
CAUTION! DRIP TRAY DRAIN.
Never expose to direct sunlight, heat sources, or ambient air temperature above 38°C
(100°F) or below 2°C (35°F). Install indoors and keep unit away from excessive humidity.
Never expose to freezing temperatures. Ensure there is adequate clearance around the
unit to allow refrigeration system condenser to dissipate heat. Warmer environments
require more clearance around the unit. Minimum clearance around all surfaces of the
machine is 2-inches. Installs where the ambient temperature exceeds 80°F, require a
minimum of 4-inches clearance for proper heat dissipation and efficient operation.
CAUTION! USE UV STABILIZED SUPPLY LINES.
Feed the unit with a potable ambient or cold-water supply only. Feed water over 100° F
(37°C) can damage the treatment components. Water block devices and external leak
detectors are strongly recommended. Locate the unit as close to the water supply and
the electrical connections as possible.

WL900 Manual Page 43 – Revision: 5-12-2021
Materials Needed:
•Personal Protective Equipment. Rubber or Nitrile Safety Gloves and Protective Eyewear
•Phillips Screwdriver
•Temperature Gauge
•Water Pitcher or Container to collect water from the faucet
•5-gallon container or drain basin
•Sanitizer - Household Bleach (5.25% Sodium Hypochlorite) or Citric Acid Based Cleaner
•1/4” Plastic Tubing and assorted 1/4” quick connect fittings
•1/2” Plastic Tubing and assorted 1/2” quick connect fittings
•TDS Meter and Test Strips for measuring chlorine – Optional
WARNING! THE FILTRATION SYSTEM MUST BE USED.
The Waterlogic WL900 Water and Ice Machine must utilize the filtration system built
into the machine. Any attempt to circumvent this filtration will cause flooding and
damage to the machine and voids the manufacturer’s warranty.
1. Unpack the Waterlogic WL900 Water and Ice Machine and check exterior for damage.
2. Identify the ports on the back of the machine.
Drain Line
Brine Line
Water Supply

WL900 Manual Page 44 – Revision: 5-12-2021
3. Connect a 1/2” line to the drain port and a 1/4” line from the brine port and route both
to the floor drain or drain outlet. Connect the water supply line (1/4”) to the “IN” port.
4. At the very bottom of the front of the unit, there are two screws recessed back from the
front lower panel. Remove these two screws, then remove the front lower panel by
pushing down, then pulling out. The panel should hinge outward and be free to remove
and set aside. This will allow access to the filter bank.
5. Once inside, the water inlet line runs from the bulkhead, through a leak detection valve
and up to the inlet of the filter bank on the left side. Close the manual shutoff valve
plumbed into this line and turn the water on from the source.
6. Disconnect the white tube from the front left of the filter bank and connect a separate
piece of 1/4” tubing, and route to drain. In this configuration, water will flush through
the first filter slot only and out to drain.
CAUTION! FILTER FLUSH REQUIRED.
MANUAL
SHUTOFF
VALVE
Disconnect, and plumb to
drain for filter flushing.

WL900 Manual Page 45 – Revision: 5-12-2021
7. Only the post and pre carbon filters need to be flushed, and only the first slot will flush
its connected filter. The sediment cartridge must be removed, and the post and pre
carbon filters be placed into the first filter slot one at a time to be flushed. Swap either
the pre or post carbon filter into the first filter slot. Open the manual shutoff valve
(previously shut off) to flush water through the filter and out to drain. After flushing,
close valve and return the filter to its original position and repeat the process for the
other carbon filter. Return the sediment filter to its original position once both carbon
filters have been flushed, leave the manual shutoff valve closed. Remove the drain tube
from the front of filter bank and reconnect the white tube.
CAUTION! DO NOT LOSE THE SEALING O-RING IN THE TOP OF FILTER CARTRIDGE
The filter cartridges contain a black sealing O-ring in the top of the filter that can easily
come loose and be lost. Be sure to keep this O-ring in place during filter flushing, as its
absence will lead to major water leaking.
Flush Filters
CAUTION! FILTER FLUSH REQUIRED.
8. After the filters have been flushed, the Waterlogic WL900 Water and Ice Machines tanks
can be sanitized. To do this, remove the top cover of the machine to access the Ambient
Tank. Remove two screws at the back of the machine and the cover should slide back
and disengage.
Filters to flush
Filter O-ring

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9. Pop the tabs around the perimeter of the ambient tank lid and disconnect the air gap
hose plugged into the lid. Remove lid and set aside. Pull up on the edges of the ambient
tank to remove. Wash with soap and water or sanitizing agent and set aside. Remove
plastic divider underneath ambient tank to access the ice bin.
10. At this time, before further sanitizing the inside of the
machine, locate the drain valves in the lower compartment
of the machine. Connect a section of poly hose to the cold
drain and route to a drain and open the cold drain valve.
Disconnect Air
Gap Tube
Disengage tabs and remove lid
Remove
Remove
Cold Drain Valve

WL900 Manual Page 47 – Revision: 5-12-2021
11. The cold tank and ice bin are now ready to sanitize. Wash the inside of the ice bin, ice
tray, ice basket, etc., with soap and water or sanitizing agent. Rinse the inside, and all
water and solution will be flushed out of the drain line connected to drain in the last
step. Once flushing of cleaning agent is complete, close the cold drain valve and remove
poly hose. Replace divider and ambient tank, ensuring the gasket at the nozzle of the
tank makes a proper seal. Reattach lid and connect the air gap tube. Reinstall the top
cover and replace two screws at the rear of the cover.
12. Now that the filters have been flushed, and the tanks sanitized, the machine is ready to
be powered on. Open the manual shutoff valve used during the filter flushing process to
allow water to flow to the filter bank and plug the machine into a power outlet. Power
will be directed to the booster pump, and the filling process will begin. Allow 30 minutes
for tanks to fill and another 15min for first batch of ice.
Water will flow through the filters and begin to fill the tanks from the bottom up, starting
with the hot tank, then the cold tank, and then the ambient tank. Once the cold tank is
filled, the chilling process will begin.
1.
2.
Ambient Tank
Ice Bin
Cold Tank
Any water that
melts from the ice
falls back into the
cold tank through
the ice basket.
Hot Tank
The cooling process begins with water being pumped from the
cold tank up to the ice making tray, shown in yellow. Water
flows from the front (blue star) to the back-runoff point (red
star). While water is flowing, refrigerant pumps through the
stainless ice-making fingers, cooling the water. Water exits the
tray and is channeled back down into the cold tank. When the
temperature of the water in the cold tank reaches a set
temperature, the ice making process begins. It can take 30-40
min for the cold water to reach temperature. The same
process takes place to make ice, except the water in the tray is
still and the cubes form on the fingers. 12 cubes are produced
every 12 minutes and then the process repeats until the
optical ice full sensors are triggered.

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WL900 DRAINING PROCEDURES
CAUTION!STORE UNIT EMPTY. ALWAYS SANITIZE BEFORE REUSE.
The unit must be completely drained and sealed before storing to avoid stagnation and
reduce microbial growth
DANGER! HOT WATER.
The Waterlogic WL900 Water and Ice Machine produces Hot Water up to 87oC (188oF).
Water above 52°C (125°F) can cause severe burns or scalding. Hot water should be
dispensed carefully into insulated container to avoid injury.
1. To drain the tanks of the Waterlogic WL900 Water and Ice Machine, first shut off
water supply to the unit. Remove the lower front panel to access the lower
compartment. To do this remove the two screws under the lower lip of the panel,
then push down and pull out. The panel should hinge outward and be free to
remove and set aside. This will allow access to the lower compartment.
2. With access to the lower compartment, locate the drain switch and the hot and cold
drain valves mounted to the black shelf just above the filter bank. Activate the drain
switch to put the machine in drain mode. This will disable the booster pump and
water will not be allowed to flow to the tanks without having to shut off water and
power. Remove the silicone cap and connect a section of 1/2” poly hose to the hot
drain valve and route to drain.
NOTE: Activating the drain switch will sound an audible alarm, that will continue
until it is deactivated. This is normal and is only to indicate to the technician that the
unit is in drain mode.
HOT DRAIN VALVE
DRAIN SWITCH
(Hidden from view)
COLD DRAIN VALVE
SILICONE CAPS

WL900 Manual Page 49 – Revision: 5-12-2021
3. Open the hot drain valve. Hot water will drain from the hot tank. Once draining is
complete, shut off the hot drain valve and swap the poly hose over to the cold drain
valve, and repeat the process. Once the water has drained from the system, shut off
the drain valve and remove the poly hose. Replace the silicone caps on the drain
valve nipples as needed. Leave the drain switch activated until maintenance is
complete.
NOTE: Draining water from the hot drain valve will drain water from BOTH the
ambient AND hot cold tanks.
NOTE: Even when the system has been completely drained, any ice still in the ice bin
will remain. Over time, the ice melt off will drain into the cold tank. If draining for
storage, quickly remove the ice after draining.
4. To return, the unit to normal operation, replace the silicone caps on the nipple of
each drain valve and ensure both valves are closed. Deactivate the drain switch. This
will enable the booster pump, and water will be allowed to flow again through the
filters and begin filling the tanks.