Dri-Eaz LGR 7000XLi Commercial Dehumidifier User Manual

Dri-Eaz LGR 7000XLi Commercial Dehumidifier

INTRODUCTION

• Dri-Eaz dehumidifiers reduce humidity in enclosed structural environments by removing water vapor from the air. LGR (low-grain refrigerant) dehumidifiers like the 7000XLi utilize a pre-cooling system to boost water removal efficiency. LGR units can continue to remove moisture in drier environments where conventional refrigerants cannot.

PARTS IDENTIFICATION

FIG. A: FRONT

FIG. B: REAR

FIG. C: POWER ATTACHMENT POINT

OPERATING YOUR DEHUMIDIFIER

Set the unit upright

• NOTICE: Transporting or storing the unit in a horizontal position is not recommended. When the machine is placed in a horizontal position, the oil from the compressor can flow into the refrigerant coils and reduce the ability of the dehumidifier to function and possibly damage the unit. If the unit has been placed in a horizontal position, set it upright and let it stand for at least 30 minutes before turning it on.
• Positioning a Dehumidifier
• For best results, operate your dehumidifiers in an enclosed area. Close all doors and windows that open to the outside to maximize the unit’s water removal efficiency. Place your dehumidifier away from obstructions, and keep it away from anything that could block airflow into and out of the unit. For more information about creating an optimum drying environment, contact Dri-Eaz at 800-932-3030.
• Set up the drain hose
• The 7000XLi condensate pump connects to a plastic drainage hose that is located in the pocket on the side of the unit. This hose is equipped with a quick-connect fitting for quick attachment to the provided 40 ft. (12 m) drain hose. Unwrap the entire hose and place the unattached end in a sink, drain, bucket, or outdoors anywhere that water can drain out safely. If you use a bucket or other container for water collection, check it regularly to prevent overflows.
• NOTICE: Uncoil and straighten the entire drain hose. Do not leave any part of the hose coiled on the unit and do not place the end of the hose higher than 20 ft. (6 m) above the bottom of the unit. Also, check for kinks or other obstructions that might restrict the flow of water. Obstructions may cause a water backup and result in overflows.
• Plug in the electrical cord
• The 7000XLi dehumidifier should be plugged into a GFCI-protected 115-volt outlet rated for at least 15 amps. Remove the cord from its storage pocket and uncoil it. Always plug the cord firmly into the unit first, and then plug the other end into a suitable outlet.
• Turn the unit on
• The control panel on the 7000XLi dehumidifier has a display and a touchpad with four keys. Press the ON/OFF to turn the unit on.

CONTROL PANEL

• ON/OFF
• Press and release to turn the unit on or off.
• DISPLAY MENU
• Press to select the next item in the menu. The menu item will show in the display.
• MENU SELECTION / UP KEY
• Press to toggle or select values in the menu displayed.
• PURGE PUMP
• Press and release to start the purge. Display will count down the seconds remaining until the purge is complete.

Startup display and normal display modes

• When a unit is first plugged into AC power, the control panel display will briefly cycle through a series of readouts. This is part of the unit’s self-diagnosis procedure, and no user intervention is required.
• Once the self-diagnosis is complete, the display will switch to normal display mode.
• The first line of the display shows the total number of hours the unit has been in operation. This value may be reset to zero to track job hours (see “Job Hours Reset” below). The second line of the display alternates between inlet temperature and inlet humidity.
• User Settings Menu
• Several settings may be changed by the user. System information can also be displayed. These items are accessed by pressing DISPLAY MENU. Each press of the key will display the next parameter. When you reach the parameter you wish to adjust, press MENU SELECTION to increase the value.
• Press DISPLAY MENU again to accept the setting and restart the display cycle. If no keys are selected for 20 seconds, the display will automatically reset and return to the normal display mode.
• Note that only menu items followed by a greater-than symbol ( > ) may be adjusted.
  All settings and modes are discussed in detail in the Control Panel Guide, p. 3.
• Error messages
• If the 7000XLi onboard diagnostics discover a problem, the unit will display an error message. See “Error Messages,” p. 17, for an explanation of each message.

Control Panel Guide

• ON/OFF. Press to turn the unit on or off. When the machine is turned on, the display normally reads PLEASE WAIT COMP. DELAY and performs a numerical countdown from a maximum of 60 seconds to 0. This delay allows time for refrigerant pressures to equalize for easier starting. Once the unit completes the compressor delay, the display shows UNIT ON XX HRS and cycles between INLET XX°F and INLET XX%. NOTE: If no compressor delay countdown is displayed, a delay is not necessary, and the machine will begin operation immediately.
• DISPLAY MENU. Press to cycle through the display of additional dehumidifier conditions and User Settings. To return to the main menu, press the ON/OFF key once.
• MENU SELECTION. Press to change the values of the “User Defined” settings. The MENU SELECTION key acts as the UP key for adjusting the setpoint for Humidistat mode operation. See User Settings Menu (below) for details.
• PURGE. Press to empty water from the condensate pump reservoir. The display will read PUMP PURGING with a numeral countdown. NOTE: During normal operation, the pump purges automatically every six minutes, or whenever the reservoir is full. Changing settings and viewing system information number of settings may be changed by the user. System information is also availableaccessed by pressing DISPLAY MENU. Each press of the key will display the next parameter (see list below). When you reach the parameter you wish to adjust, press MENU SELECTION to increase the value. Press DISPLAY MENU again to accept the setting and restart the display cycle. If no keys are selected for 20 seconds, the display will automatically reset and return to the normal display mode.
• Note that only menu items followed by a greater-than symbol ( > ) may be adjusted.
• Press MENU SELECTION to reset hours to zero. NOTE: When in Humidistat mode, the unit will display HUMIDISTAT on the top line during normal operation rather than JOB HOURS
• Shows total unit operating hours. Value cannot be modified.
• Shows current temperature and RH of the inlet and outlet.
  

  Humidistat Mode

• Sets the humidity level when the unit is in Humidistat Mode. Press MENU SELECTION to change the RH value. Each press of the button increases the setting by 5% increments, cycling through 90% RH and starting again at 30% RH.

• Shows the current temperature scale. Press MENU SELECTION to select Fahrenheit or Centigrade scale.

• Shows the current display panel language. Press MENU SELECTION to select Spanish, German, French, or English.

• Displays the cold (evaporator) coil temperature.

• This function is not used on the 7000XLi

• Shows compressor current draw in amps

AT THE END OF THE JOB

• To reduce the possibility of drips when moving the unit, follow these additional steps to ensure that all water is removed from the unit.
• NOTICE: To ensure the condensate tank empties completely while purging, make sure the unit is set fully upright.

1. If the unit is in a defrost cycle, wait until the unit has returned to normal operating mode before proceeding. To check, review the control panel. The control panel will show one of the following
   • Defrost in progress:
   • Normal Display:
2. Gently rock the upright machine on its wheels to ensure any water remaining on interior surfaces falls into the sump area.
3. Press the PURGE key. When the purge cycle is complete, turn the unit off.
4. Remove the external drain hose, drain it carefully, and return it to the pocket provided on the side of the unit.
5. Unplug the power cord from the power supply and from the base of the machine, coil neatly, and return it to the coil storage pocket (see Fig. A).

TRANSPORTATION AND STORAGE

• NOTICE: Handle the unit carefully. Do not drop, throw, or place the unit where it could fall. Rough treatment can damage this equipment and may create a hazardous condition or void the warranty.
•  Do not expose the control panel to moisture, snow, or rain.
• Store and transport securely to avoid any damaging impact to internal parts.
• Secure during transport to prevent sliding and possible injury to vehicle occupants.

Special tip for transporting on stairs:

Before transporting the unit upstairs, follow these additional steps to ensure that all water is removed from the unit:

1. Turn the unit off after a defrost cycle has been completed. Gently rock the upright machine on its wheels to ensure any water remaining on interior surfaces falls into the sump area.
2. Press the PURGE key. When the purge cycle is complete, turn the unit off.
3. Remove the external drain hose, drain it carefully, and return it to the pocket provided on the side of the unit.
4. IMPORTANT: Remove power cord from base of unit, coil it neatly, and place it in the cord storage pocket. This will prevent the cord from catching on the stairs and possibly damaging itself.

FIG. D: PARTS DIAGRAM

MAINTENANCE SCHEDULE

• WARNING: Risk of dust and contaminants exposure. Use of a respirator mask and gloves is recommended. If a unit has been exposed to potentially dangerous contaminants, clean thoroughly and sanitize before reuse

Before each use

• Inspect the electrical cord for damage. Look for fraying, cuts, etc. Replace the cord if you find any damage.
• Inspect, vacuum or replace filter. The 3M™ HAF (High Airflow) filter may be vacuumed clean and reused up to three times before replacement. Use a HEPA vacuum and brush tool to remove any dust or debris. Do not use compressed air or expose the filter to any liquids, as this may damage the filter.
• NOTICE: Replace used filters only with a new HAF filter (Dri-Eaz part no F368). Other filter types do not provide adequate filtration or airflow. Be sure to install the new filter in the correct orientation. See “Installing the HAF Filter,” p. 8. See also “About HAF Filters,” below.

ABOUT 3M™ HAF FILTERS FROM

• HAF filters from 3M provide superior particle retention, resist microbial growth on filter surfaces and allow for maximum airflow throughout the filter loading cycle. Follow these guidelines to ensure maximum protection for equipment, technicians, and the job site:
• Replace the HAF filter whenever it has been vacuumed clean and reused three times. HAF filters lose their effectiveness after three uses.

Remove the four 3∕8 in. cover bolts shown:

• Disconnect the sensor chip assembly from the block. Gently lift the chip and the mounting post together out of the block.
• NOTICE! The sensor chip assembly is fragile. Handle with care at all times. To avoid damaging the sensor with a static electricity discharge, do not touch the sensor circuitry, and do not place any tape or other material in contact with the sensor circuitry.

• Lift the heat exchange block straight upward off the base. Note the orientation of the block for reassembly

• Inspect the vertical condenser (hot) coil. If dust is present, vacuum or use compressed air on both sides of the coil until it is clean. Take care not to bend or damage the fins. Vacuum the outside (shown) and inside surface of the vertical coil.
• NOTICE: Do not use coil cleaning solution on the vertical condenser coil. The solution may drip onto sensitive internal components and damage them.
• The horizontal evaporator (cold) coil (not shown) should also be vacuumed. For more thorough cleaning, remove the back cover and use coil cleaner. See “Inspecting and Cleaning the Pump Check Valve,” p. 11.

Reinstalling the Heat Block and Top Cover

• NOTICE: Be sure housing bolts are properly threaded before tightening. Do not overtighten. Do not use a power tool
• !Reinstall the heat exchange block. Be sure to position it in the original orientation.
• Carefully reseat the heat exchange block. Make sure that the block is flush against the base and vertical condenser (hot) coil.
• Make sure the top of the block is flush with the top of the condenser coil.

ERROR MESSAGES

• The LGR 7000XLi control system constantly monitors internal operating conditions. If the system detects a problem, it will produce an error (“ER”) message indicating the problem. If the display shows an ER message, first unplug the unit and then plug it back in.
• This will usually reset the electronics, and the unit will begin operating normally. If the error message reappears, refer to the explanation and solution shown below. If this still does not fix the problem, contact your local authorized service center or call the Dri-Eaz Service Department at 800-932-3030.
• NOTE: The message “POWER FAILURE” is not a system error. When this message is displayed, it indicates that power to the unit was interrupted and then restored. To clear the message, press the MENU SELECTION key.

TROUBLESHOOTING

SPECIFICATION

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Dri-Eaz LGR 7000XLi Commercial Dehumidifier-FAQs