MASTER DHP 65 Condensation Dehumidifier User Manual

: June 5, 2024
: MASTER

Table of Contents

MASTER DHP 65 Condensation Dehumidifier
INTRODUCTION
GENERAL SAFETY RULES
GENERAL DESCRIPTION OF THE UNIT
PRELIMINARY OPERATIONS
START-UP
MAINTENANCE
ALARM LIST
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MASTER DHP 65 Condensation Dehumidifier

INTRODUCTION

The manual is intended for the end-user only in regard to operations that can be performed with closed panels. The operations, other than cleaning of the finned coil, that require to open doors or panels with tools must only be performed by expert personnel. Each appliance must be connected to the power supply via a cable with a power plug supplied with the unit. For maintenance operations, the power plug must always be disconnected to allow the operator to intervene in safe conditions. If assistance or spare parts are required, read the identification plate located outside of the unit to identify the appliance (model and serial number).

GENERAL SAFETY RULES

The purpose of the manual and of the entire documentation supplied is to allow both the installer and operator to correctly perform the installation, start- up and maintenance of the equipment, with-out causing damage to the personnel in charge and to the unit. Each appliance is subject to a risk assessment carried out in compliance with the current legislation, which defines the necessary actions and implements the protective measures required to achieve the risk reduction objectives.All activities regarding the operation and mainte-nance of the unit must be performed:

Only by properly trained people, who must implement safe working practices and use the personal protective equipment appropriate to the specific task performed, based on their specific qualification.
Only by properly trained people who have read and fully understood the manuals, technical documents and safety documents.
Use of the appliance must not be allowed to anyone who is not adequately trained and skilled.This manual, the technical documents and any security documents attached must be read and stored for the entire lifespan of the appliance:

CAUTION:
This appliance is designed for use in an indoor environment.

CAUTION:
The unit must be connected to an electrical system that complies with local electrical safety regulations.

CAUTION:
The unit must be placed by following the dimensions and spaces required, including the minimum spaces allowed by ad-jacent structures.

CAUTION:
This equipment must always be connected to earth. We decline any liability for any danger or damage caused if this requirement is not complied with.

CAUTION:
Sharp tools (screwdrivers, needles or the like) must not be inserted into the grids or inside any other panel opening, especially when the unit is open to remove the filter.

CAUTION:
All maintenance and cleaning operations on the unit must be performed with the power supply disconnected. Never remove the front grille or open any part of the unit without first disconnecting the plug from the socket.

CAUTION:
Use a wet cloth to clean the unit. Never spray water on the unit and its electrical components except to clean the finned coil.

The equipment must always be kept in a vertical position in order to prevent accidental spillage of condensation (water) from the specific container. It is strictly forbidden to move the equipment while connected to the power outlet, as the resulting vibrations and movements may cause the condensation to leak from the specific container, thus affecting the electrical parts.The unit can only be moved after emptying the condensate tank, and in any case, it is AL- WAYS REQUIRED to remove the plug from the socket before moving the appliance. Should water be accidentally spilled on the appli-ance, the unit must be immediately turned off and disconnected from the power supply, and may only be turned on after eight hours have elapsed.

CAUTION:
The equipment contains R1234yf refrigerant: this gas is flammable. The amount of charge is indicated in the data table of this user manual. Warning, the refrigerant is odorless.Do not use any means to accelerate the defrosting process or for cleaning other than those recommended by the manufacturer. The appliance must be placed in a room that does not have ignition sources continuously in operation (e.g. open flames, a gas appliance while running or an electric heater running). Do not drill holes into or burn the appliance.

PERSONAL PROTECTIVE EQUIPMENT
Use the following personal protective equipment during unit use and maintenance operations:

CLOTHING:
Those who carry out mainte-nance or work on the unit in environments with slippery floors must wear safety shoes with non-slip soles.

GLOVES:
Appropriate gloves must be worn during cleaning and maintenance operations. When refilling the refrigerant gas, the use of appropriate gloves is mandatory in order to prevent the risk of freezing.

MASK AND GOGGLES:
Masks to protect the respiratory tract and safety goggles to protect the eyes must be worn during cleaning and mainte-nance operations.

GENERAL SAFETY RULES
The following safety signs, which must be respected, are affixed on the unit:

Read the user manual.
Read the technical manual.
Electric shock hazard.
Flammable material hazard.

CAUTION:
It is strictly forbidden to remove the safety signs on the units.

GENERAL DESCRIPTION OF THE UNIT

(FIG. 1)
A dehumidifier is an appliance suitable for controlling the humidity of the room it is placed in. Dehumidification is carried out via a refrigeration cycle which is based on the physical principle whereby the air, when it comes into contact with a cold surface, wets it, releasing humidity in the form of condensation drops.
The equipment is made up as follows (FIG. 2): Air is extracted from the appliance: it passes through the washable filter

the aluminum coil (evaporator)
the hot exchanger (condenser)
the fan
and finally, the dehumidified air flows out and is recirculated into the room through the grille. The condensed water is collected in the tank
A microswitch stops the appliance when water in the tank reaches a certain level. An electronic board
manages the correct operation of the appliance.
This appliance is equipped with hot gas to defrost system, which ensures the correct operation of the dehumidifier within the temperature and humidity range specified in the technical data table.

REFRIGERANT CIRCUIT
The refrigerant gas used in these units is R1234yf. The refrigerant circuit is built in compliance with current standards.

Flammable material hazard
This unit is hermetically sealed and contains fluorinated gas R1234yf GWP (R1234yf) = 4.

PRELIMINARY OPERATIONS

REMOVAL OF THE PACKAGING AND ASSEMBLY
Remove the packaging taking care not to damage the unit. Dispose of the packaging products (wood, plastic, cardboard), taking them to the specialized collection or recycling centers (follow the local regulations in force).

CAUTION:
Depending on the model, assemble the appliance, with any handles, wheels and all relevant hardware (FIG. 3) housed inside the packaging before commissioning.

INSPECTION
All units are factory assembled and wired (except for certain components). Upon receiving the unit, it must be immediately and thoroughly inspected, checking that it has not been damaged during transport or that no parts are missing. Before use, specifically check for any dents on the external panels, including those in the tank compartment. Also check that the cable, plug and relevant insulation are intact. Otherwise, it is FOR-BIDDEN to connect and start the unit, which must be sent to an authorized service center.

OPERATING PRINCIPLES CAUTION:
To ensure the correct operation of the appliance, it is recommended to operate the unit within the limits shown on the technical data table.

POSITIONING
Place the appliance to ensure adequate airflow.

CAUTION:
Make sure that the appliance is placed in such a way so as to prevent contact with water.

SERVICE AREA
The hot air expelled by the fan must not be obstructed. Avoid hot air recirculation between suction and delivery to prevent compromising the performance of the unit or even interrupting normal operation.

CAUTION:
The equipment must not be placed in cramped environments, which do not allow adequate distribution of the air from the air outlet grille into the room.

CAUTION:
Do not place or hang objects on the front panel, it may cause damage to the unit.

GENERAL INFORMATION CAUTION:
Disconnect the power plug from the socket before carrying out any maintenance operation on the electrical part.

CAUTION:
Check that the supply voltage corresponds to the unit’s operating data (voltage and frequency) shown on the data plate on the dehumidifier. The appliance is fitted with a power cable for correct operation.

CAUTION:
The earthing connection is mandatory.

START-UP

PRELIMINARY CHECKS

POSITION OF THE VOLTAGE CHANGE SWITCH (220-240V / 110-120V) (FIG. 4): If the set voltage does not match that supplied by the mains, the voltage must be adapted. Loosen the two lid screw fasteners, shift/press the switch onto the voltage value supplied and mount the lid again.
CHECK THE TYPE OF SOCKET: If the type of socket does not match the power supply features, a suitable adapter must be fitted. IF THE VOLTAGE CHANGE SWITCH POSITION, THE TYPE OF SOCKET AND THE POWER SUPPLY ARE CONSISTENT, YOU MAY PROCEED WITH THE SWITCH ON SE-QUENCE.

CAUTION:
Check that the power cord is properly connected.

CAUTION:
Check that all the cover pan-els are in the correct position and are locked via fixing screws before commissioning.

CAUTION:
Always disconnect the power supply if the appliance is not used for a long period of time.

CONTROL PANEL
(FIG. 5)
The units are equipped with a luminous signaling panel that indicates their operating status. A brief description of their meaning is provided below.

CONTROL PANEL:

SHOWN ON THE DISPLAY):
The display shows when the unit is connected to the mains and electrically powered.
LED
FAN SPEED LED: These LEDs indicate the set ventilation speed (LOW > Low Speed / HIGH > High Speed). ALARM LED: This LED is on when the unit is in alarm. The display will show the error message.
WORKING LED: This LED is on when the compressor is running. The LED flashes when the dehumidifier is waiting to restart or is in defrost mode. The LED turns off when the desired amount of humidity has been reached in the “ON” status. FULL LED: This LED is on when the condensate tank is full or if the pump is in alarm.
BUTTONS:
ON/OFF: To turn on the dehumidifier, simply press the “ON/OFF” button. Based on the relative humidity set, the appliance starts working. When the room humidity reaches the required level, the appliance goes into standby mode and the unit stops, but remains in the “ON” status (POWER LED on). If the room humidity rises again, exceeding the previous setpoint, the de-humidifier restarts again.
Press the “ON/OFF” button to turn off the appli-ance (with the appliance off, the display shows
FAN SPEED: Press the “FAN SPEED” button to select the desired ventilation speed (LOW > Low Speed / HIGH > High Speed).
(HUMIDITY SET): Press the “-” / “+” buttons to set the relative humidity desired. The display will start flashing, showing the new reference set point. After a few seconds, the display stops flashing and the new humidity set point has been detected by the electronics. It is possible to operate the appliance regardless of the degree of humidity present in the environment. By pressing the “-” button until the “CONT” message appears on the display, the appliance will operate continuously.
HOURS: Press the “HOURS” button to view the working hours of the appliance.

DISCHARGE PIPE CONNECTION (Set-up)
(FIG. 6)
A discharge pipe can be connected to the appli-ance. A hose connection with a diameter of 16 mm is fitted on the tank.
CONNECTION OF THE CONDENSATE PUMP (Optional)
The dehumidifier has been designed with specific shapes of the upper part of the cover which allow you to place a second dehumidifier on top. Make sure to perform the stacking operation in complete safety.
CAUTION:
Do not stack more than one differ.

MAINTENANCE

CHECKS TO BE PERFORMED BY THE USER
The only maintenance to be performed regularly is filter cleaning (FIG. 9). Cleaning must be performed by removing the filter from the front of the dehumidifier and placing it under the water jet of a normal sink. This must be performed on average every month; in the event of use in very dusty environments cleaning must be more frequent. CAUTION: REMOVE THE FILTER FROM THE APPLIANCE TO PERFORM CLEANING. IT IS FORBIDDEN TO PERFORM CLEANING WITH THE FILTER INSTALLED. Depending on use, cleaning of the finned coil may be required (FIG. 10), with a low-pressure water jet. Before performing washing it is strictly required to disconnect the supply plug from the power mains. To carry out a correct washing, follow the procedure below:

Remove the screw fixing the cover to the structure (1).
Rotate the casing (2).
Remove the two screws and remove the finned coil guard (3) (Wash the finned coil with low-pressure water, paying attention not to wet the electrical panel. THE WATER MUST ONLY FLOW FROM THE TOP DOWN).
Reinstall the guard and reinstall the two screws (4).
Rotate the cover to return it to the vertical position (5).
Reinstall the screw fixing the cover to the structure (6). Before restarting the dehumidifier, ensure the electrical parts are not wet and/or moist, in normal conditions at least eight hours must elapse. This cleaning operation improves the dehumidifier’s performance and assures its long life.

SPARE PARTS
Should it be required to replace one or more parts during maintenance by specialized operators, this must be done by using original spare parts only. If required, request the “spare parts list” from your vendor, specifying the model and serial number of the unit.

DISMANTLING THE UNIT
The unit has been designed and built to ensure continuous operation. The lifespan of some components such as the fan and the compressor depends on their maintenance.

CAUTION:
The unit contains substances and components dangerous for the environment (electronic components, refrigerant gas and oils). At the end of its useful life, in the event of dismantling the unit, the operation must be carried out by specialized refrigerating personnel. The unit must be sent to specific specialized cen-tres for the collection and disposal of equipment containing dangerous substances. The refrigerant fluid and the lubricating oil contained in the circuit must be recovered, in accordance with the regulations in force in your country.