Danby DPAC9030 External Water Tank Feature, Cooling Operation, External Water Tank Instructions

External Water Tank Feature:

This unit is equipped with a secondary “External Water Tank” which sits on a support tray and easily attaches to the rear side of the unit by means of a quick connect fitting. The male quick connect is attached to the water tank, the female quick connect is attached to the back of the main unit. We recommend the external water tank be connected to the main unit at all times during both air conditioning and dehumidifying modes. These water tanks allow for the storage of excess accumulated condensed water produced during cooling/dehumidifying operation.

It is possible to operate the unit utilizing the “Internal” (primary) water tank only. (However, running time/operation maybe reduced during high humidity conditions) If the external water tank is not connected to the main unit, (excess) condensed water is automatically directed into the internal water tank. When the external water tank is utilized, (excess) condensed water is directed first into the external tank. When the external tank is full the water will then backflow into the internal tank.

Cooling Operation:

During air conditioning mode condensed water accumulates in a pre-cooler drip tray located underneath the evaporator (cooling) coil. When the water level reaches a predetermined level, the water flow is directed into a small (well) holding tank located at the bottom of the unit. When the water level in the well reaches a pre-determined level, a water pump is automatically activated that pumps the water upto the condenser coil and is subsequently cascaded across the fins of the condenser coil.

This showering action is very efficient in terms of;

1)Keeping the condenser coil cool during operation.

2)Provides maximum cooling efficiency.

As the water cascades across the heated fins of the condenser coil, it is evaporated. This process minimizes accumulated water from being stored in both holding tanks, which results in longer running times and less frequent emptying of the water tanks. This process is continuous during air conditioning mode only. NOTE: During high humidity conditions, if the rate of water being condensed exceeds the rate of water being evaporated, a solenoid valve automatically opens allowing for excess water to be directed into the holding tanks.

When the water level in the well returns to normal, the solenoid valve automatically closes and the water is again directed into well and the water pump continues normal operation. When the water level inside the external tank reaches it’s maximum level, the water will then backflow into the (primary) internal water tank. The water level inside the internal tank (only) is monitored/controlled by a float switch mechanism (safety shut-off) self-activated when the water level reaches a predetermined level, causing the unit to stop/cease operation automatically and the tanks will have to be emptied. The fan motor will continue to operate. (this is normal)

NOTE: The float switch mechanism (safety shut- off) is activated/controlled by the water level inside the (primary) internal water tank only.

NOTE:

•The quick connect fittings supplied with both the main unit and external water tank are "self sealing" connections.

•This means as soon as the quick connects are "disconnected", water flow between the main unit and external water tank

stops immediately.

External Water Tank Instructions:

1.Attach the water tank support tray (with castors) to the saddle bracket located at the rear (lower section) of the unit, using the screws provided. See Fig. 35

Fig.35

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