This manual has important safety warnings and operating information.

Please read before using the dehumidifier and save for future reference.

PURCHASE DATE: _____________________ SERIAL NO.: _________________________

DEALER: __________________________________________________________________

DRI-EAZ PRODUCTS, INC. • 1320 Josh Wilson Road, Burlington, WA 98233 • www.dri-eaz.com • (360) 757-7776

07-00871 A


WARRANTY ................................................................ 1

SAFETY INFORMATION ............................................. 1

LOCATING THE DEHUMIDIFIER ............................... 2

OPERATING CONDITIONS ........................................ 2

PRINCIPLES OF OPERATION ................................... 3

Defrosting .............................................................. 3

EXTRACTION RATES ................................................. 4

GRAVITY FEED DRAINAGE ....................................... 4

AUTOMATIC PUMP OUT SYSTEM ............................ 4

ELECTRICAL CONNECTIONS ................................... 4

OPERATING INSTRUCTIONS .................................... 4

MAINTENANCE ........................................................... 5

Pump Hose Compartment ..................................... 6

Peristaltic Pump..................................................... 6

Pump Tube Replacement. ..................................... 6

SPECIFICATIONS ....................................................... 7

PARTS LIST................................................................. 7

WIRING DIAGRAM ...................................................... 7

TROUBLESHOOTING ................................................. 8

Congratulations on your selection of a new

DrizAir 150 Dehumidifier from Dri-Eaz Products Inc.

It has been our goal to offer you the best high performance dehumidifier available. We invite your written appraisal and suggestions for improvements.

Reading this Owner's Manual will help you achieve maximum benefit from your dehumidifier. customer is responsible for all labor and shipping charges after one year.

Housing and Frame Warranty: Dri-Eaz will repair or replace, at its option, parts necessary to correct the housing and frame from metal cracks, weld separations, or defects in materials and workmanship for a period of five (5) years from purchase date. The customer is responsible for all labor and shipping charges after one year.

Limitations: This warranty shall not extend to any products showing effects of misuse, disassembly, alteration, lack of proper maintenance, corrosive chemicals, improper voltage, accident damage, unauthorized repairs, use of other than genuine parts and materials, fire, flood, normal wear or any other causes beyond Dri-Eaz Products' control. The warranty obligation extends only to the repairs or replacement of parts found, upon Dri-Eaz Products' examination, to be defective. The foregoing constitutes the entire warranty and no other warranty, liability, contingency or responsibility, direct, indirect, consequential or in any way connected with the sale or operation of equipment products is expressed or implied.

To receive warranty service: You must write in or call for a Return Authorization. No parts will be accepted without the serial number of the equipment the part was taken out of and an authorization number, nor will any credit be given until the defective parts are received. Please direct questions on the warranty to an authorized distributor or Dri-Eaz Products, Inc. at

(360) 757-7776.

If damage was sustained during shipping, be sure to retain the shipping materials for a possible freight damage claim.


Comprehensive Warranty: Dri-Eaz promises to the original purchaser to repair or replace, at its option, any part of the DrizAir Dehumidifier that proves to be defective in workmanship or materials for a period of two (2) years from date of purchase. During the first

90 days, Dri-Eaz will cover all material, labor and shipping costs, to and from the service center. After the

90 days, the customer is responsible for shipping costs to the Service Center. After one (1) year, the customer is responsible for labor costs and shipping costs to and from the service center.

Compressor and Coils Warranty: Dri-Eaz will repair or replace, at its option, parts necessary to correct the compressor, evaporator or condenser coil found to be defective in materials or workmanship for a period of three (3) years from date of purchase. The



Use only with a properly grounded outlet. Do not, under any circumstances, remove the grounding plug from the cord as this may result in electrical shock and fire hazard, and will void the warranty.

Save the carton. Dispose of the plastic bag.

Children might use it for play which is dangerous. For your safety, the dehumidifier is equipped with a threeterminal type grounding plug on the electrical cord. It must be plugged into a properly protected three-prong outlet. The unit is designed to operate on ordinary household 110/120 volt, 60 Hertz alternating current.




If the electrical outlet you intend to use will not accept the three-prong plug, or if you are not sure the outlet is adequately grounded, you should have a properly grounded three-prong outlet installed according to the National Electrical Code.

Never put the DrizAir 150 into standing water because of the extreme shock hazard.

Never drop the DrizAir 150. Severe impact may result in damage to the compressor.

Never allow the air intake to become plugged with drapes or other loose fabrics as this may overheat the unit.

Never unplug your dehumidifier by pulling on the cord. Grasp the plug firmly and pull straight out.

Never allow children to play on or around operating dehumidifiers.

Never run the DrizAir 150 outside when it is raining.

Never store dehumidifiers outdoors.

Never attempt any servicing or cleaning on the

DrizAir 150 while it is plugged into electrical current.

This may result in shock.


Do not allow any water inside the unit. If motors or wiring become wet, thoroughly dry before using. Do not unplug the unit while it is operating. outlet grill can be directed towards that area of the room. The grill should never be closer than three feet from the wall.

In the case of individual rooms being dried, all doors and windows should be kept closed. Any traffic through doors should be kept to a minimum.

Important Note

Avoid putting the dehumidifier on or over hardwood floors. Unexpected spillage from the unit could cause damage to flooring.

When drying several rooms, the units should be placed at equal distances from one another to cover the whole floor area. Internal doors and windows should be left open. Try and arrange each unit to blow air from one area into another, i.e. from a corridor into a room.

Normally, the DrizAir 150 will be serving an internal room volume between 2,000 and 13,000 cubic feet. In smaller rooms it will raise the internal temperature substantially. This helps reduce the relative humidity (Rh) and therefore assists in the drying process. It is not recommended that the dehumidifier be operated at ambient conditions above

100° F (38° C).


Use the DrizAir 150 only with a properly grounded outlet. Removal of ground may result in injuries from electrical shock and fire hazard.


The dehumidifier must be operated in an enclosed area to achieve maximum efficiency. All doors, windows and other openings to the outside must be closed tightly. The dehumidifier should be placed where there is no restriction to air flowing either into the coils at the rear or from the front grill.


The DrizAir 150 is equipped with a handle and wheels to reduce the amount of lifting required to move the unit from one location to another. The sturdy handle and wheels allow the unit to be rolled rather than lifted or carried. This reduces the possibility of damage to the unit or of injury to the operator.


Do not position multiple units in such a way that one unit blows directly at another.

A dehumidifier operating in a specific area will have little effect in drying an adjacent enclosed area, such as a closet, unless there is adequate circulation of air in and out of the adjacent area. Open interior doors and operate Dri-Eaz TurboDryers to maintain good air movement. Doors may need to be braced to prevent them from closing as a result of air movement.


The DrizAir 150 Industrial Grade Dehumidifier is designed to operate in cooler conditions than most home owner units. It will operate at temperatures down to 33° F, but will not operate above 100° F (0° - 38°

C). For best operation, maintain temperatures between

70° and 80° F (21° - 27° C).

Under normal circumstances the DrizAir 150 should be positioned centrally in the room. If, however, a particularly wet area is apparent, the air

A light coating of frost on the coil is normal when the dehumidifier first begins to operate due to the refrigerant rushing through the coil. Under normal conditions, it should disappear within 60 minutes. It is also perfectly normal for frost to form on the coil when




the temperature of the room is relatively cool and/or if the humidity in the room is relatively low.

When the dehumidifier is first put into operation in a saturated environment, it will remove relatively large amounts of moisture. It will continue to do so until the relative humidity in the area being dried is reduced to a point where extensive humidity damage should be significantly reduced. After this, the amount of moisture removed from the air will be considerably less.

The decreasing amount of moisture being extracted indicates that the dehumidifier is doing its job and that it is maintaining the relative humidity at its best level.

The performance of the dehumidifier should be judged by the reduction of humidity, rather than by the amount of water being removed and deposited in the bucket.

You can check the relative humidity and the temperature with a Thermo-hygrometer from Dri-Eaz

Products. With this information specific humidity can be obtained using a Psychrometric Chart. that operating the unit in very small, enclosed rooms will dramatically increase the room temperature. Do not operate the unit when the ambient air temperature exceeds 100° F (38° C).


The DrizAir 150 dehumidifier is designed to reduce the relative humidity by removing moisture from the air, thereby helping to dry wet carpets, cushion, floors, walls, contents and structural materials.

The principle of operation is that moisture laden air is drawn through the rear of the unit and passes over the evaporator coil. This air is cooled by the evaporator coil, resulting in condensation forming on that coil.

This condensation builds up until water drips into the drainage tray and is removed through the gravity drain hose or the automatic pump out system.

The air then passes over the condenser coil where it is heated to a temperature slightly above that of the room. This heat is derived from the electrical components, the work done by the compressor and from the latent heat released from the condensed water.

This warm dry air is then discharged from the front outlet grill and circulates around the room absorbing more water vapor before re-entering the DrizAir 150.

In order to condense water vapor into liquid, energy must be removed. About 970 BTU's of energy must be released by the vapor to condense one pint of water

(8000 BTU's to condense 1 gallon). This energy is retained within the water vapor and is referred to as latent heat.

Using the DrizAir 150, the water vapor that is condensed releases energy back into the atmosphere and raises the air temperature in the room. Be aware

Drying Operation

Wet outside air is constantly passing through a building at a rate referred to as "air exchange rate." The rate depends on a number of factors, including the wind pressure on the building, and the amount of air gap around doors and windows. As an example, a typical home on average will change its air every two to three hours. In order to dry the structure of the building in a reasonable time, the relative humidity of the air should be about 40% Rh at 70° F (21° C). In most cases the air has to be dried artificially to reduce it to 40% Rh. It is important that when the humidity is greater than 40% outside, all doors and windows are kept closed.


When the DrizAir 150 is operating at a room temperature of 68° F (20° C) or higher, water will normally emerge from the unit. When operating at lower temperatures, frost may appear on the evaporator coil instead of water. An automatic control built into the DrizAir 150 allows ice to build up until it starts to create an adverse effect on air flow through the unit.

During the frost build up, no water will drain from the unit. At low temperatures this normal ice buildup may last from 45 minutes to several hours, depending on conditions.




After a given buildup of ice has occurred, the thermostat senses the associated ice temperature and initiates the defrost cycle. During defrost, the fan switches off and considerable quantities of water will drain from the unit. As soon as the ice has melted, the normal fan operation will resume. The defrosting period will last up to 10 minutes, depending upon conditions. Periods between the defrost cycle will vary according to operating conditions.


Water Removal Chart

Temp F/ Rh

50° F / 60%

60° F / 60%

70° F / 60%

80° F / 60%

80° F / 80%

100° F / 80%

100° F / 90%

Temp C / Rh

10° C / 60%

16° C / 60%

21° C / 60%

27° C / 60%

27° C / 80%

38° C / 80%

38° C / 90%


14 Pints

40 Pints

62 Pints

83 Pints

106 Pints

138 Pints

154 Pints

In all dehumidification systems the extraction rates vary with humidity and temperature. An electronic hygrometer from Dri-Eaz Products will help in checking for proper operation. The above chart provides some examples of extraction rates at various conditions: power switch off and leave the pump switch on. The gravity drain can also be used to remove residual water.


The DrizAir 150 is equipped with a three-terminal type grounding plug on the electrical cord. It must be plugged into a grounded three-prong outlet. The unit is designed to operate on ordinary household 110/120 volt, 60 Hertz alternating current. Do not under any circumstances remove the round grounding plug from the cord.

The DrizAir 150 is provided with a 14 gauge, electrical cord. The unit may be operated from a grounded fault protected 110/120 volt system only.

Extension cords must be heavy enough to deliver at least 11 amps to the unit. It is extremely important that the voltage at the unit itself, is within a tolerance of

10% of the nominal rating. If there is any doubt about voltage, then it should be tested at the unit on compressor start-up.

If there is a "dip" of more than 10% from the nominal supply rating, then action should be taken to improve the supply. Under no circumstances should the unit be left operating. As the length of cable increases, the voltage available at the unit decreases.

The following table provides a guide to maximum electric extension cord lengths.


Water can be removed via the gravity drain hose at the rear of the unit. The gravity drain may only be used when there is an available container or permanent drain point that is below the outlet point. The gravity drain hose can also be used to remove any residual water left behind when using the automatic pump out system.



The DrizAir 150 can automatically pump water up to 40 feet away (on a horizontal surface) and up to 20 feet high allowing it to pump up out of basements.

Unlike other condensate pumps, our peristaltic pump operates smoothly, without water surges. Detailed information on the pump-out system is included under the Maintenance section.

To remove residual water left in the drip tray and allow the unit to be moved without spilling, turn the

Extension Cord Lengths

14 AWG for up to

12 AWG for up to

25 feet

50 feet


1. Secure the wheels on the DrizAir 150 Dehumidifier to keep it from rolling and to ensure it remains upright during transport. Do not drop the unit.

Severe impact may damage the compressor.

2. If the unit has fallen over or been tipped, set it upright for one (1) hour before operating.

3. Operate the DrizAir 150 on a level surface only.

This will prevent the unit from flooding.

4. Plug the DrizAir 150 into a grounded 110/120 volt outlet and switch power "ON" to start.

5. For gravity drainage, unclip the larger gravity drain hose and connect to rear outlet. Place the drain hose into a suitable five gallon container or floor drain below the drain outlet.




6. When using the automatic pump-out system, make sure the pump is switched to the "ON" position.

Check to make sure that the gravity drain hose is disconnected from rear of unit and secured in clips.

Run the pump-out hose out of an opening (door or window) or into a toilet or sink.

7. Residual water left in the collection tray after the unit has been turned off can be removed in two ways: 1) via the gravity drain or 2) the pump can be turned on independent of the power switch to pump the water from the tray.

8. If the unit is shut off for any reason, allow five minutes before restarting to avoid compressor damage.

9. Listen for proper operation of the fan and compressor before leaving the DrizAir 150 operating.


If the unit is switched off during use, wait for five (5) minutes before restarting. Attempting to re-start the unit before this period of time may cause damage to the compressor.

Remove the filter from the filter shroud by inserting a finger or screwdriver into the access hole at the bottom of the filter shroud and pushing up. To clean the filter use a light vacuum or wash with water and mild detergent. Spray directly against the foam in the direction of the air flow. Begin at the top of the filter and work down. Allow the filter to drain before reinstalling it in the filter shroud.

Cleaning the Coils

The first step in cleaning the two coils is directing compressed air, from both sides, through the coils.

Ideally, both coils should be dry and the operation be completed outside (due to the dust that is created).

After blowing out loose contamination, a wet cleaning process may be used.

The remaining soil is most readily removed with a soft brush and soapy water. If soil is dry and hard, it is difficult to remove and must be soaked and softened. If you flush the coil, do not permit water to enter the electrical compartment. Use a squirt bottle or a syringe so that you can control the water. Do not turn a hose on the coil! After cleaning the coils, ensure that the drain tray, drain hose, and peristaltic pump are completely free of dirt. Clean the front grill with a vacuum cleaner and brush attachment.



Disconnect the DrizAir 150 from the power supply before attempting any cleaning or maintenance.

In order to maintain the DrizAir 150 at optimum efficiency and to prevent breakdown, the filter, evaporator and condenser coils must be cleaned regularly.

The coils are the means by which heat is transferred to and from the air stream to the refrigeration circuit.

The coils are critically engineered so that the correct heat transference takes place and the pressures within the refrigeration circuit remain within operating limits.

The air passing through the DrizAir 150 dehumidifier may be carrying considerable quantities of dust, lint and fungus spores. Even using a filter, the coils may pick up dirt and their heat transferring properties decrease, resulting in reduced water extraction and undue pressure on the components.

If the unit is operating in a dusty environment both the filter and coils will need to be cleaned more frequently. For optimum efficiency, a maintenance schedule should be set up for checking the coils and the filter at regular intervals. Clean as is necessary.

Cleaning the Filter

Electric Wiring & Cord

Inspect the power cord periodically to ensure insulation is in good condition. Remove the dehumidifier cover and ensure that all wires are secured away from the fan blade. Inspect connections at the terminal block for good contact. Inspect the wiring for abrasions, nicks or cuts. Repair or replace the electric cord or wiring as needed. Connections that are loose will heat up and show discoloration as a result. Refer to the wiring diagram.

Fan Motor

Carefully clean the fan motor and blade each time you have the cover off for cleaning the coils.

Drain Hoses

Ensure that the drain hoses are not kinked and in good condition before the DrizAir 150 leaves for the job site and again after the installation is completed.

Avoid wrapping drain hose too tightly around hose wrap to avoid kinking.

Peristaltic Pump

The pump out system consists of the drip tray, tube fittings, pump tube and the peristaltic pump. This system should be inspected and maintained regularly to




ensure effective operation. Failure to change the tube and properly maintain the pump will result in water leakage, flooding of floors and may cause electrical problems.

The pump operates by compressing a tube within a chamber. The pump tube is compressed by rollers which "squeeze" the condensate water through the system. The compressive parts, the tube and rollers, are subject to wear and can be replaced.

Maximum pump tube life can reach over 1000 hours but a 500 hour inspection interval and tube replacement is strongly recommended. The parts to inspect are the pump body, the drive shaft, the rollers and the tube.

To avoid water leakage and flooding of the floor below the dehumidifier, inspect the pump tube regularly for cracks, abrasions, and deterioration. Replace pump tube at least every 500 hours.

Tube: The pump tube should be replaced after 500 hours or 3 months storage. Before discarding, the tube should be examined for abrasions and cuts. These conditions can indicate wearing or malfunction of moving parts.

Body: The cover and case should be examined for cracks or other indications of structural failure. The chamber should be examined for residue. As rollers wear, a black powder (nylon dust) is deposited in the pumping chamber.


Disconnect the DrizAir 150 from the power supply before attempting any cleaning or maintenance.

Shaft: The pump drive shaft should be checked for

"side play". With the tube removed, the roller carriage should not move side to side more than one 1/16th

(0.0625) of an inch.

Rollers: The pump rollers turn on steel shafts. Rollers must fit snugly on the shaft and spin freely. A loose roller will not compress the tube properly. A "frozen" roller, which does not turn on its shaft will abrade the tube and cause premature tube failure.


Pump Tube Replacement

Please follow these steps for removal and replacement of pump tubing in the DrizAir 150

Dehumidifier. Inspect and replace tubing every 500 hours of operation.

1. Disconnect the power to the unit.

2. Remove the left side panel of the dehumidifier as you face the control panel. Remove the side panel screws and slide the panel up past the handle (it is not necessary to remove the handle).

3. Disconnect the suction and discharge hoses from the pump tube.

4. Unscrew the screws that hold the front plate of the pump in place. Remove the front plate. The other screws that attach the pump housing to the motor base do not need to be removed.

5. Remove the used tubing in a "U" shaped pattern clockwise, starting from the top left side.

Disconnect the tube from the hose fittings.

6. Clean the roller race, removing any articles that could damage tubing. Check the rollers for looseness or binding. The rollers must fit snugly on the shaft and spin freely. See the Troubleshooting section for guidelines if a problem exists.

7. Insert the new tube into the inlet port, anchoring the tube in grippers. As you insert the tube, rotate the rollers clockwise so that the rollers follow the tube as it is being inserted.

8. Continue to rotate the roller bracket assembly, pushing the tube into the roller race.

9. Insert the tube into the outer port.

10. After complete installation of tube, ensure that there is no excess tubing and that all slack is taken up to avoid excessive wear. Re-check all connections and fittings.

11. Replace the front plate and secure with the four screws. Run the pump to ensure correct operation.





When a new tube is installed there is an initial break-in period before the hose "softens".

Use Weight

Ship Weight

Compressor Rating

Power Required at 80° F / 60% Rh

Lighted Splash Guard Power Switch

122 lbs

140 lbs

9165 BTU

8 amps


Lighted Splash Guard Pump Switch

Peristaltic Pump Only

Operating Range - Fahrenheit

Operating Range - Celsius


0.35 amps

33°-100° F

0°-38° C

Water Removal 80° F /60% Rh



Water Removal 100° F / 90% Rh 154 pints

Specifications are subject to change without notice. Some values are approximate.


Part Name

Lighted Power Switch

Lighted Pump Switch

Part Number








Evaporator 08-00045

Condenser 08-00044

Pump 02-00494

1/4 Pump Tubing 15-00495





Rev 11-94



Troubleshooting solutions fall into two categories listed in the third column. Field Solutions (FS) are those procedures that can be handled by the technician in the field. Others solutions should be handled by a repair technician and are listed as Authorized Service Technician (AST).

WARNING: All the service procedures below should be executed with power off i.e. unplugged.


The dehumidifier does not operate

The compressor will not start

Fan blade not turning

Dehumidifier operating but room not dry

Only partial frost or moisture on coils

No moisture or frost on coils


1. No power to machine

2. Switch not turned on

1. Unit turned on too soon

2. Faulty or broken wire

3. Overload preventing compressor start up

4. Bad compressor

5. Defective relay

1. Obstructed or bent fan blade

2. Loose fan blade nut

3. Loose or broken wire

4. Burned out fan motor

1. Not enough time to get dry

2. Poor air movement

3. Excessive air infiltration

1. Possible leak in system

2. Low charge in system

1. Possible leak in system

2. Capillary tubing damaged

3. Compressor not running























1. Plug in the unit

2. Check power at outlet

3. Turn on the switch

1. Switch off unit and wait 5 minutes before starting

2. Replace or repair broken/loose wire

3. Reduce room temperature below 100° F (38° C)

4. Replace or repair compressor

5. Use Volt/amp meter to check relay

1. Remove obstruction or replace fan blade.

2. Tighten fan blade nut

3. Replace broken wire

4. Replace fan motor

1. Allow more time for drying

2. Increase air movement with

Dri-Eaz TurboDryers

3. Reduce airflow into the area being dried

1. Check for leak with gas leak detector

2. Repair and recharge system

3. Contact distributor or Dri-Eaz


1. Check for leak with gas leak detector

2. Look for damage, replace tubing

3. See Compressor Section

Dri-Eaz Service Department (360) 757-7776







Unit continuously in defrost

Unit not defrosting (heavy frost or ice buildup that persists over several hours)

Little water is being collected by the unit

Water overflowing the tray while using gravity drain hose

Pump not functioning properly

Water overflowing or leaking while using pump out


1. Defective defrost control

2. Room temperature is too low

3. Defective bypass relay valve

1. Defective defrost control

2. Sensor improperly located or defective

3. Defective bypass relay valve

1. Room air has been dried to 45% Rh

2. Room temperature is too low

3. Air movement through unit restricted

1. Unit not in level position

2. Gravity drain hose kinked













1. Cracked or distorted pump body

2. Excessive shaft side play

3. Worn rollers

4. Frozen rollers

1. Peristaltic pump switched off

2. Peristaltic pump not functioning

3. Pump tube failure or pump roller failure

4. Unit not in level position

5. Drain hose or fittings obstructed or kinked












1. Replace defrost control

2. Increase the room temperature

3. Replace bypass valve

1. Replace defrost control

2. Reposition or replace sensor

3. Replace bypass valve

1. Check humidity with a hygrometer

2. Increase the room temperature

3. Increase airflow or clean out coils

1. Make sure dehumidifier is level

2. Straighten hose and remove kinks

1. Replace pump

2. Replace pump

3. Replace rollers

4. Replace roller shaft

1. Set pump switch to "on" position

2. Inspect wiring to pump a. Check motor for operation b. Replace pump motor

3. Replace pump tubing a. Replace bearings/rollers

4. Make certain unit is level

5. Clear obstruction or straighten tube

Dri-Eaz Service Department (360) 757-7776




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