Revision 1.1
Page 22
WL500 Draining Instructions
WARNING!
WL500 IS A HEAVY OBJECT.
Use proper lifting aids and handling techniques to avoid injury. Use assistance as single person
lift could cause injury. Always drain before handling to reduce weight.
Draining Notes
There are 3 tanks and a booster pump circuit that must be drained in the WL500. The cold still
water circuit of the
WL500
consists of a 2 liter cold tank, a 1 liter pre-chill chamber and a
booster pump circuit that is sealed and must be vented to drain. The booster pump will have
some water in the circuit that must be purged to remove it. The sparkling chamber does not
have a vent or drain port and must be dispensed until empty (pushing CO
2
gas only out of the
faucet) to clear the water from the sparkling chamber. It is critical to clear the cold still water
before draining the sparkling chamber to ensure the pump does not inject water back into the
sparkling chamber. The hot tank has a drain port and is the only tank that is open to
atmosphere through the vent and faucet.
Prior to draining the hot tank, turn off the green compressor/heater switch, and dispense 2
liters of hot water from the machine. As hot water is dispensed from the faucet of the unit,
colder water will be introduced into the hot tank. Since the green power switch is turned off,
the heater will not energize and heat the incoming tap water. Following this precaution
prevents exposing personnel and equipment (drains, catch basin, etc.) to scalding hot water.
Disable Cold and Hot Tanks
1.
Turn off the green power switch to disable the heater and compressor.
2.
Dispense 2 liters of water through the hot tank to cool the water temperature in the hot
tank and avoid burns.
WARNING!
VERY HOT WATER CAN BURN OR SCALD.
Hot water should be dispensed carefully into insulated container to avoid injury.
Turn off Water Supply and Bleed Water Pressure
3.
Isolate the unit from feed water by turning off the supply.
4.
Dispense cold still water to relieve any pressure built up in the system.
5.
Remove the water supply line from the unit.
6.
Install dust cap or plug into water supply line bulkhead fitting.
Drain the Cold Still Water Tanks and Circuit
7.
Open front hatch panel by unscrewing the retaining screw in front of the faucet until it is
flush with the faucet. Slide front hatch panel up and out.
8.
Remove the UV light cover plate and access the UV lamp and quarts sleeve.
WARNING!
ULTRAVIOLET RADIATION
. Protect your skin and eyes against ultraviolet
rays. Never look directly at an operating UV light. Disconnect UV lamp before removing.
9.
Unplug the UV lamp and remove UV lamp.
10.
Remover the UV indicator sensor from the quartz sleeve retaining nut.
11.
Unscrew the quartz sleeve retaining nut and remove quartz sleeve to vent the cold circuit.
12.
Remove the cold tank drain line cap and drain the 2 liters into a container.
13.
Remove the pre-chill drain line cap and drain the 1 liter of water from the pre-chill chamber
and the booster pump circuit.
14.
A total of 3 liters of cold still water will drain from the unit.
