WaterLogic WL3FW FIREWALL Manual page 40

WARNING! WL3FW IS A HEAVY OBJECT. USE PROPER LIFTING AIDS AND HANDLING
TECHNIQUEST TO AVOID INJURY. Single person lift could cause injury. Always drain before handling to
reduce weight.
Draining Notes
We recommend that you drain both the hot and cold tanks in the WL3FW before moving or storing.
The cold-water circuit of the WL3FW consists of either a 2 Litre cold tank in the mini or 4 Litre cold tank
in the free standing. Cold tanks have outlet solenoids that seal the circuit and must be manually vented
to drain properly. Remove the cold tank outlet line before the cold outlet solenoid valve to break the
vacuum and vent the cold tank. This will vent the cold tank and allow air to replace the water as it
drains and ensure proper drainage. The WL3FW has front facing cold and hot tank drain ports for easy
access. The table top front panel must be opened up to access the drain ports. The hot tank has a vent
line that is open to atmosphere through the faucet.
Prior to draining the hot tank, turn OFF the green compressor/heater switch, and dispense 2 Litres of
hot water from the machine. This will cool the tank and help prevent exposing personnel and
equipment (drains, catch basin, etc.) to scalding hot water.
WARNING! VERY HOT WATER CAN BURN OR SCALD.
Hot water should be dispensed carefully into properly insulated container to avoid injury.
Disable Cold and Hot Tanks – Cool Hot Tank if necessary
1. Turn off the green power switch to disable the heater and compressor.
2. Dispense 2 Litres of water through the hot tank to cool the water temperature in the hot tank.
.
Turn off Water Supply and Bleed Water Pressure
3. Isolate the unit from feed water by turning off the supply valve.
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 of the tower.
Drain the Cold Still Water Tanks and Circuit
7. Open lower front panel hatch panel by removing the lower center locking/retaining screw and
carefully lower the front panel from its catch. The panel will then pull out and can be removed from
the unit by pulling out of two plastic retainer clips at the bottom.
8. Remove top cover (lid) to access top of cold tank. Vent the cold tank by removing the cold tank
outlet line before the cold outlet solenoid valve to break the vacuum and vent the circuit.
9. Remove the cold tank drain line cap and drain the 2 Litres (mini) or 4 Litres (free standing) into
container.
Drain the Hot Water Tank
10. Remove the hot tank drain cap from the unit.
11. Drain 1.6 Litres of hot water into suitable container.
Reassemble the Unit
12. Reinstall cold outlet line and all drain caps.
13. Install top cover and lower front panel and tighten the locking screws to secure.
WL3 FW Manual
WL3 FW DRAINING INSTRUCTIONS
Page 36 - Revision: EU 17-09-2020