The Harmony Series 2 Homelift is a hydraulic lift designed for domestic use, enabling wheelchair users to move between two levels within a home. It is manufactured by Terry Group Ltd. and is designed to meet various safety and operational standards, including BSEN 55014-1:2006, BSEN 55011:2007, BSEN 61000 series, and BS5900:1999.
Function Description:
The homelift operates on a hydraulic system, with a power pack containing the main circuit board (CE966), battery charger, hydraulic pump, reservoir, and solenoid system. The lift car, or "sling," contains the control mechanism, wiring, and battery. An aperture liner and trapdoor system are integral to its operation, filling the opening between floors and forming a fire barrier. The lift is controlled via call stations and a remote on/off fob. Safety features include safe edges, an underpan, and various limit switches to prevent trapping and ensure correct positioning.
Important Technical Specifications:
- Power Supply: 13A, 240V, 1 Phase 50Hz, on a dedicated RCD-protected circuit.
- Aperture Dimensions:
- Standard Car: Length (X) 1290mm (+5 -0), Width (Y) 910mm
- Longer Car: Length (X) 1490mm (+5 -0), Width (Y) 910mm
- Wider Car: Length (X) 1290mm (+5 -0), Width (Y) 1045mm
- Longer/Wider Car: Length (X) 1490mm (+5 -0), Width (Y) 1045mm
- Minimum clearance between any side or back wall and inner edge of the aperture: 50mm (2”).
- Weights of Main Components (kg):
- Car Weights:
- Aperture Liners (each): STD 8, Longer 9, Wider 9, LW 10
- Plaster Board and Tacfire: STD 13, Longer 15, Wider 15, LW 17
- Trapdoor: STD 33, Longer 39, Wider 39, LW 45
- Carriage Sides (each): STD 31, Longer 42, Wider 31, LW 42
- Carriage Door: STD 23, Longer 23, Wider 24, LW 24
- Carriage Floor: STD 31, Longer 34, Wider 34, LW 36
- Carriage Underpan: STD 15, Longer 20, Wider 20, LW 22
- Carriage Centre Brace: STD 11, Longer 13, Wider 13, LW 14
- Power Pack: 35 (all models)
- Sling/Guide Weights:
- Sling: STD 34, Long (Std Width) 47, STD (Wider) 36, Long (Wider) 49
- Ram: 42 (all models)
- LH Bott. Guide (heaviest): STD 20, Long (Std Width) 19, STD (Wider) 20, Long (Wider) 19
- Control Tube Set: STD 13, Long (Std Width) 14, STD (Wider) 13, Long (Wider) 14
- Loading Diagram:
- Wall force: 1.02 KN MAX
- Floor force (guides): 1.02 KN MAX
- Floor force (base frame): 4 KN MAX (spread across 895 x 135mm area)
- Control Mechanism: Features various switches including upper door enable, lower door enable & underpan override, final limit switch, creep latch switch, dump switch, creep switch, and top limit switch.
- PCB Boards: CE966 (Main Controller) and CE1654 (Sling PCB).
- Creep Control Voltage: 8.1V (adjustable via VR5 potentiometer on CE1654 PCB, between 8.1 and 8.2Vdc).
- Charger Voltage: 13.7V.
- Control Circuit Full Load Voltage: Should not fall below 11.5V when travelling down.
- Insulation Resistance: To earth exceeds 100 Meg Ohms for safety circuits.
- Lift Car Stop Accuracy: Within ±12mm of the level being served.
- Anti-Creep Device: Prevents car movement away from landing level by more than 25mm.
Usage Features:
- Operation: The lift is operated via call stations and a remote fob.
- Door Operation: Can be automatic or manual. Automatic doors have adjustable current limits (VR3 on Sling PCB) and an auto-close potentiometer (VR4) for closing after approximately 1 minute if left open.
- Tilting Floor: The floor can be adjusted to suit uneven floor levels at the lower landing, with side-to-side adjustment up to 10mm and front drop up to 20mm for wheelchair access.
- Safety Scotch: A safety scotch must be fitted to the LH guide when working underneath the lift.
- Optional Extras: Includes side infill tubes for gaps between guides and walls, and fold-up seats (new and old styles) with adjustable height. A lap belt kit can also be fitted.
- Phone Kit (LH630): An optional phone extension can be integrated into the mirror panel for communication.
Maintenance Features:
- Installation Procedure Checklist: A detailed checklist for engineers to ensure all installation tasks are completed.
- Test Certificate: To be filled out and returned to the office, confirming successful installation and compliance.
- Final Testing: Requires a competent person (trained lift engineer) to complete a series of checks, including static hydraulic fluid test pressure, operational data, relief valve integrity, anti-creep device function, electrical tests (insulation resistance, fuse ratings, voltages), and general safety system checks.
- Harmony Adjustments: Specific settings to be made on installation, including safe edge override switches, door beak, door actuator-close limit switch, bottom stop height, trapdoor safe edge override, sling board-current limit pot, sling board-limit switch override pot, and charge voltage.
- Fault Finding Guides: Comprehensive flowcharts and descriptions for troubleshooting emergency circuits, down hold, and up hold issues, with LED indicators for diagnostics.
- Scheduled Maintenance: Recommended servicing every 12 months. Key components and their replacement intervals:
- Trapdoor Pick Up Arm Suspension Wire: Every Service
- Batteries in Call Stations, Carriage Control and Key Fob: 12 months
- Underpan Tensator Springs: 24 months
- Door Cables: 24 months
- Trailing Cables: 36 months
- Hydraulic Oil in Pump & Ram: 60 months
- Safe Disposal: Instructions for the safe disassembly and disposal of hazardous materials like batteries, printed circuit boards (PCBs), and hydraulic oil by authorized contractors.
- Creep Protection Board: A pull cord is fitted to TB17 of the CE1654 board to disable the creep circuit during commissioning, preventing unauthorized movement. It should be removed after full commissioning.
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