Skope TME ActiveCore - User Manual

Need help?

Do you have a question about the Skope TME ActiveCore and is the answer not in the manual?

Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is a service manual for SKOPE TME/SKT ActiveCore Top Mount Vertical Fridges.

Function Description

The SKOPE TME/SKT ActiveCore is an electronically controlled top mount vertical fridge designed for commercial use. Its primary function is to refrigerate perishable products, maintaining temperatures below 5°C in both Normal and Energy Saving modes. The electronic controller manages and displays the fridge temperature, signals alarms, and automatically switches between Normal and Energy Saving modes based on usage patterns. It also initiates defrost cycles as required to ensure efficient operation.

Important Technical Specifications

The manual covers several models, including TME650, TME1000, TME1500, SKT650, SKT1000, and SKT1500 series, with various types such as ActiveCore, Tropical, and Solid Door configurations.

Electronic Controller: The fridge is fitted with a CAREL S4 or CAREL S4 Evo electronic controller. This controller is pre-programmed by SKOPE, and changes to settings are generally not recommended unless absolutely necessary.

Temperature Probes: Two temperature probes are used: a control probe (monitors and controls fridge temperature, displays temperature, and identifies issues) and an evaporator probe (controls defrost initiation and termination).

Door Switch: A door switch is located below each door, activated by a small magnet in the door frame. It turns off the evaporator fan motor and compressor when the door is open for more than 2 minutes (parameter A10), initiates Energy Saving mode if the door is not opened for 3 hours (parameter r6), and reactivates Normal mode when the door is opened.

Defrost Cycle: Defrost is time-initiated (Parameter 'dl' = every 2 hours of cumulative compressor run time) and temperature-terminated (Parameter 'dt' for Day mode = 4.5°C, or after 90 minutes, Parameter 'dP'). During defrost, the compressor stops, and the evaporator fan runs continuously.

High Pressure Switch: A manually resettable high-pressure switch protects the refrigeration unit from damage due to over-pressure (high temperature) conditions. When activated, it cuts power to the electronic controller, turning off the display and cabinet lights.

Cold Climate Protection (CCP) Mode: The fridge enters CCP mode if the ambient temperature is too cold (control probe detects interior temperature below 0°C for more than 30 minutes). In this mode, lights remain on and cannot be switched off.

Refrigeration Unit Specifications (UTHCCI-0002 and UTHCCI-0004 models):

UTHCCI-0002: Compressor: Embraco FFI12HBK, Capacity: 836 Watts, Refrigerant: R134a, Charge: 380 g.
UTHCCI-0004: Compressor: Kirby Kulthorn CA9440Y, Capacity: 1000 Watts, Refrigerant: R134a, Charge: 475 g.

Fan Motor Torque Settings:

EBM: 1.4 N·m
Wellington Drive: 2.1 N·m

Usage Features

Operating Modes: The fridge automatically switches between Normal and Energy Saving modes.

Normal Mode: Lights are on, and product is fully chilled.
Energy Saving Mode: Lights are off, and product temperature is moderated. Both modes are suitable for perishable products (maintaining temperature below 5°C). The fridge enters Energy Saving mode if the door is not opened for 3 hours (parameter r6). It automatically returns to Normal mode after 9 hours (parameter r7) in Energy Saving mode, or can be manually switched by pressing the Energy Save (up) button or opening the door.

Temperature Control: The factory setpoint for perishable products is 2.5°C, adjustable between 1°C and 15°C for specialist applications.

Lighting: Depending on the model, the cabinet may feature LED tube sign lights, LED interior sidelights, or LED modular shelf and side lights. Lights automatically switch on in Normal mode and off in Energy Saving mode, but can be manually controlled using the Light button on the controller faceplate.

Door Handles: Door handles are packed separately for transit and can be fitted by aligning spring clips with door brackets and pushing down. They can also be removed for transport or refitting.

Shelves: The fridge is fitted with five wire shelves per door, which can be repositioned to suit various products using shelf clips. Shelves with lights can also be repositioned, ensuring the shelf light cable allows for movement.

Door Adjustment: Doors can be realigned by loosening top hinge bracket screws. Height adjustment blocks below the bottom hinge allow for setting the correct door level (not applicable to solid door cabinets or middle doors on three-door models). Door tension can be adjusted by rotating the capstan in the bottom hinge bracket to ensure self-closing and an airtight seal. Hinges on single-door cabinets can be reversed from right-hand to left-hand side.

Maintenance Features

Cleaning:

Cabinet: Wipe inside and outside with a damp cloth, avoiding electrical parts. Unplug the fridge before cleaning.
Condenser Coil and Optional Filter: Monthly cleaning with a soft brush is recommended to remove dust and fluff. Qualified service personnel should perform a more thorough cleaning every six months. Unplug the fridge before cleaning. If fitted, the condenser filter can be cleaned with a vacuum cleaner and cold water.

Replacement Procedures: The manual provides detailed procedures for replacing various components:

Lighting: LED tube side lights, modular shelf lights, modular side lights, LED driver power supply, interior wiring loom, and sign lights. It emphasizes replacing lights with the same type (LED tube or modular light) and not using fluorescent tubes.
Doors: Replacing gaskets, removing and refitting doors, adjusting door tension, replacing the torsion bar, and reversing hinges.
Refrigeration Unit: Removing and replacing the entire refrigeration unit. This unit is electronically controlled and removable for servicing or transportation. It unplugs and lifts off the TME cabinet. Some minor servicing can be performed without removal.
Unit Electrics Box Assembly: Removing and opening the unit electrics box, which contains the mains supply socket, fuses, EMI filter, and panel mount socket connectors.
Condenser Fan: Accessing, replacing the fan blade, and replacing the fan motor.
Evaporator Fan: Accessing, replacing the fan blade, and replacing the fan motor.
Temperature Probes: Replacing the control probe and the evaporator probe.

Troubleshooting: The manual includes comprehensive troubleshooting tables for controller alarms and cabinet/refrigeration unit problems.

Controller Alarms: Explains display messages (e.g., "2.0" for Normal mode, "ECO" for Energy Saving, "dor" for door open alarm, "CCP" for Cold Climate Protection) and alarms (e.g., "Err" for refrigeration system error, "E0" for control probe fault, "E1" for evaporator probe fault, "E2" for door switch fault, "LO" for low temperature, "HI" for high temperature, "ELO" for low voltage, "EHI" for high voltage, "EE" for electronic controller fault). Each alarm has a description of possible causes and recommended repair actions.
Cabinet and Refrigeration Unit Troubleshooting: Addresses issues such as the cabinet not operating, no controller display, sign/interior lights not on, lights not switching off, excess noise, frozen evaporator coil, high power consumption, product too warm, and moisture buildup. Provides possible causes and repair steps for each.

Servicing and Diagnosis Overview: All refrigeration work must be undertaken by fully qualified refrigeration technicians in accordance with the “Refrigerant Handling Code of Practice 2007 Part 1 and Part 2”. Quick touch and frost test guides are provided for diagnosing compressor and fan faults. It also covers issues like short of refrigerant, capillary restriction, and compressor pumping faults.