EIP RM4500 Industrial Dehumidifier Owner’s Manual

EIP RM4500 Industrial Dehumidifier

INTRODUCTION

Designed for a wide range of applications, the RM4500 is a rugged, industrial unit, which utilizes an energy-efficient compressor and a compact portable design to provide easy efficient drying.

The RM4500 has a number of special features:

• High-efficiency rotary compressor
• EIPL’s “Reverse Cycle” defrost system
• Hours run the meter
• Integral pump-out system
• Provision for permanent drainage
• Extra long power cord
• Robust rotational molded polyethylene housing

The fan draws the moist air through the cold evaporator coil, which cools the air below its dew point. Moisture forms on the evaporator coil and is collected in the condensate tray, which is equipped with a permanent drain. The cooled air then passes through the hot condenser coil where it is reheated using the same energy removed during the cooling phase, plus the additional heat generated by the compressor. The air is, therefore, discharged from the dehumidifier at a slightly higher temperature with lower absolute humidity than that which entered. Continuous circulation of air through the dehumidifier gradually reduces the relative humidity within the area. The RM4500 dehumidifier is a rugged, reliable drying unit designed to operate effectively over a broad range of temperature and humidity conditions. An active hot gas defrosts system, controlled by an electronic timer, guarantees positive de-icing, thereby optimizing operation at low temperatures. A digital Humidistat is included which allows for precise humidity control. A programmable display lets you set a specific desired humidity level. The unit incorporates a rotationally molded polyethylene shell resilient to damage caused by rough handling.

SPECIFICATIONS

• MODEL: 10570RH-GB
• HEIGHT: 1115 mm
• WIDTH: 625 mm
• DEPTH: 710 mm
• WEIGHT: 77 kg
• AIRFLOW: 600 M3/Hr
• POWER SUPPLY: 230V/ 50Hz/ 1 ph
• FINISH: Rotational Moulded polyethylene
• OPERATING RANGE: 3°C – 35°C
• REFRIGERANT: R407c (650g)

“This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. The refrigeration system is hermetically sealed. The Global Warming Potential (GWP) of refrigerants used in products manufactured by Ebac Industrial Products Ltd is as follows

• R134a – 1300
• R407c – 1610

For the type and weight of refrigerant contained in this unit, please refer to the product data label”

OPERATION

The following procedures should be followed to test the RM4500 for correct operation:

1. After unpacking, examine all external features to confirm damage-free shipment. Report all defects and damage at once. Connect the power cable to a grounded 13 Amp electrical outlet. Connect the drainage outlet to a suitably sized hose and run the hose to a permanent drain.

2. Setting the Digital Humidistat
   The Digital Humidistat is factory preset to give the optimum level of control. Only adjustment of the desired set point is required. During normal operation, the display shows the current % Relative Humidity within the space being conditioned.
   The required humidity level can be set as follows:

   • Press the “S” button once to access the set point
   • Press the or button to change the display to the desired Humidity level
   • Press the “S” button again to save the set point – The control returns to displaying the current % Relative Humidity

3. Check the dehumidification process as follows:
   CAUTION:
   DO NOT REMOVE COVERS WHEN THE UNIT IS IN OPERATION

   • Place the unit on a level surface.
   • Start-up unit by switching to “I”.
   • Check that the compressor is running.
   • Leave the machine running for 1 Hour.
   • Operate the pump purge switch and ensure water is pumped out of the condensate outlet tube located on the back of the unit.
   • When the unit is operated in an ambient of less than 15°C, a defrost cycle should occur approximately every 20mins. The exact time is impossible to predict as the unit is fitted with a temperature-sensitive defrost control.

When the unit is defrosting, the % Relative Humidity displayed on the digital controller may increase as a result of the ice/frost melting. This is quite normal and the display will return to its normal reading when the unit returns to dehumidifying mode. (Fan running) If, after carrying out the above procedures, the unit does not appear to function properly, refer to the Trouble Shooting section, which follows, or contact the Factory Service Center.

CAUTION:
ONCE THE UNIT HAS BEEN SWITCHED OFF, WAIT AT LEAST FIVE MINUTES BEFORE RESTARTING.

After using the RM4500, turn it off for five minutes to allow the condensate on the coils to drain into the pump reservoir, then turn it back on and press the momentary purge switch for twenty to thirty seconds to evacuate the water from the pump reservoir.

ROUTINE SERVICE

WARNING:
ENSURE THAT THE POWER CORD TO THE MACHINE HAS BEEN DISCONNECTED BEFORE CARRYING OUT ROUTINE SERVICE. THE SERVICING AND REPAIR OF THIS UNIT SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON.

To ensure continued full efficiency of the dehumidifier, maintenance procedures should be performed as follows:

1. Clean the surface of the evaporator and condenser coils by blowing the dirt out from behind the fins with compressed air. Hold the nozzle of the air hose away from the coil to avoid damaging the fins. Alternatively, vacuum cleans the coils.
   WARNING:
   DO NOT STEAM CLEAN REFRIGERATION COILS

2. Check that the fan rotates freely. The fan motor is sealed for life and therefore does not need oiling.

3. To check the refrigerant charge remove the front cover and run the unit for 15 minutes and observe the evaporator coil. It should be evenly coated with frost across its surface. At temperatures above 25°C, the coil may be covered with droplets of water rather than frost. Partial frosting accompanied by the frosting of the thin capillary tubes indicates loss of refrigerant gas or low charge.

4. Check all wiring connections, including mains cable for damage or loose connections.

5. In order to check the defrost operation, the unit needs to be operated at an ambient temperature of less than 15°C for at least 20mins. When operated In this condition the unit should defrost at least once every hour. The defrost mode can be monitored by observing the ice melting on the coil face, prior to defrosting the face will show a white coating of frost, which should clear during defrost

IF ANY OF THE PRECEDING PROBLEMS OCCUR, CONTACT THE EBAC SERVICE CENTER PRIOR TO CONTINUED OPERATION OF THE UNIT TO PREVENT PERMANENT DAMAGE.

REPAIRS

1. Should an electrical component fail, consult the Factory Service Center to obtain the proper replacement part.

2. If refrigerant gas is lost from the machine, it will be necessary to use a refrigeration technician to correct the fault. Contact the Factory Service Center prior to initiating this action.
   Any competent refrigeration technician will be able to service the equipment. The following procedure must be used:

   • The source of the leak must be determined and corrected.
   • The machine should be thoroughly evacuated before recharging.
   • The unit must be recharged with refrigerant measured accurately by weight.
   • For evacuation and recharging of the machine, use the crimped and brazed charging stub attached to the side of the internal pipework.
     The charging stub should be crimped and brazed after servicing. NEVER allow permanent service valves to be fitted to any part of the circuit. Service valves may leak causing further loss of refrigerant gas.

3. The refrigerant compressor fitted to the dehumidifier is a durable unit that should give many years of service. Compressor failure can result from the machine losing its refrigerant gas. The compressor can be replaced by a competent refrigeration technician.
   Failure of the compressor can be confirmed by the following procedure:

   • Establish that power is present at the compressor terminals using a voltmeter.
   • With the power disconnected, check the continuity of the internal winding by using a meter across the compressor terminals. An open circuit indicates that the compressor should be replaced.
   • Check that the compressor is not grounded by establishing that a circuit does not exist between the compressor terminals and the shell of the compressor.

TROUBLESHOOTING

Unit inoperative

| ****

1.     No power to unit

2.   Mains cable damaged.

| 1.     Check the power from power supply panel.

2.   Contact the Factory Service Center

Little or no airflow

| ****

1.  Fan motor burnt out

2.  Dirty refrigeration coils

3.  Loose electrical wiring

| 1.  Replace the fan motor

2.  See Routine Maintenance

Section

3.  Check the wiring diagram to find fault and repair

Little or no water extraction

| 1.  Insufficient air flow

2.  Compressor fault

3.  Loss of refrigerant gas

| 1.  Check all of the above

2.  Contact the Factory Service Center

3.  Contact the Factory Service Center

Little or no defrost when required

| ****

1.  Faulty timer

2.  Faulty reversing valve

| 1.  Contact the Factory Service Center

2.  Contact the Factory Service Center

Unit vibrates excessively| 1.  Loose compressor

2.  Damaged fan

| 1.  Tighten the nuts on the compressor mounts

2.  Replace fan

Water flooding inside the machine

| ****

1.  Drain pipe blocked/frozen

2.  Drain pipe too high

3.  Crimped or blocked tubing

| 1.  Clear the obstruction

2.  Ensure that no section of the drain hose is above the level of the water outlet

3.  Straighten, clear, or replace tubing

RM4500 SPARE PARTS LIST

N UMBER| DESCRIPTION| P ART

N UMBER

| Q UANTITY
---|---|---|---
1| Timer| 1619508| 1
2| Condenser coil| 2057025| 1
3| Evaporator coil| 2057024| 1
4| Filter| 2057031| 1
5| Capillary| 3014249| 2 X 30”
6| Solenoid valve| 3020833| 1
7| Filter dryer| 3020957| 1
8| Solenoid coil| 3030454| 1
9| Hour meter| 3030778| 1
10| On/Off switch| 3035924| 1
11| Power Relay| 3036188| 1
12| Run capacitor| 3036337| 1
13| Pump purge switch| 3036779| 1
14| Fan| 3040282| 1
15| Fan inlet ring| 2057003| 1
16| Duct attachment| 2057004| 1
17| Grille| 2057005| 1
18| Wheel| 3050124| 2
19| Condensate pump| 3160151| 1
20| Compressor| 3944934| 1
21| Heat exchanger| 1057002| 1
22| Humidity Controller| 3031526| 1

WARNINGS

This appliance can be used by children from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the application in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision. If the SUPPLY CORD is damaged, it must be replaced by the manufacturer, its service agent, or a similarly qualified person in order to avoid hazards. This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. The refrigeration system is hermetically sealed.  The Global Warming Potential (GWP) of refrigerants used in products manufactured by Ebac Industrial Products Ltd is as follows

• R134a – 1300
• R407c – 1610

For type and weight of refrigerant contained in this unit, please refer to the product data label Due to the high pressures within the refrigeration circuit, under no circumstances must direct heat be applied to the evaporator coil in an attempt to remove the build-up of ice. No attempt should be made to cut open any part of the refrigeration circuit due to the high pressures and gas involved. If the unit is switched off at the mains power supply for any reason, the unit must be allowed to stand at rest for at least three minutes before restarting. For correct installation and operation, the unit inlet and outlet must have a clearance of 0.5M from all adjacent surfaces and or structures.

UK Head Office

• Ebac Industrial Products Ltd St Helens Trading Estate Bishop Auckland County Durham DL14 9AD
• Tel: +44 (0) 1388 664400
• Fax: +44 (0) 1388 662590
• www.eipl.co.uk
• sales@eipl.co.uk.

American Sales Office

• Ebac Industrial Products Inc 700 Thimble Shoals Blvd. Suite 109, Newport News Virginia, 23606-2575 USA
• Tel: +01 757 873 6800
• Fax: +01 757 873 3632
• www.ebacusa.com.
• sales@ebacusa.com.

German Sales Office

• Ebac Industrial Products Ltd. Gartenfelder Str. 29-37 Gebäude 35 D-13599, Berlin Germany
• Tel: +49 3043 557241
• Fax: +49 3043 557240
• www.eip-ltd.de.
• sales@eip-ltd.de.

References

• EIP Group - Industrial Dehumidifiers
• EIP Group - Industrial Dehumidifiers
• EIPL - Industrial Dehumidifiers

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