STATEMENT OF WORK

PROJECT: Elevator Control System Upgrade - Chancery Building

LOCATION: Embassy of the United States of America, Maharajgunj, Kathmandu, Nepal

1. BACKGROUND

The Embassy operates two (2) OTIS GEN2 traction elevators (GMMS 3361 and 3362) installed in December 2005 at the Chancery building. Following the full load test conducted in August 2025, critical deficiencies were identified with OBO-mandated security features (T17 Night Shutdown and Capture operations). These features have been non-operational since September 2023.

Technical assessment by OTIS India Field Engineering Department confirmed that the existing control systems (TCBC controller, SPBC communication board, and drive system) are obsolete, no longer supported by the manufacturer, and spare parts are unavailable in the market. The obsolete components cannot be repaired or upgraded individually and must be replaced as a complete system to restore required security functionality.

2. SCOPE OF WORK

The Contractor shall furnish all labor, materials, equipment, tools, transportation, and supervision necessary to remove existing old elevator control systems and install new upgraded control systems on both elevators to restore all OBO-mandated operation and security features.

2.1 WORK INCLUDES:

A. Pre-Installation Activities:

• Site survey and verification of existing system configuration

• Coordination with Embassy Facility Management for work schedule

• Submission of detailed installation plan and timeline

• Provision of all necessary safety equipment and signage

• Notification to building occupants regarding elevator outages

B. Removal of Existing Components:

For each elevator (GMMS 3361 and 3362), remove and properly dispose of:

• Existing TCBC (Traction Control Board CAN) - Model GDA 26800KAI

• Existing SPBC (Service/Peripheral Board) - Model GAA 26800KM1

• Existing Drive (VVVF) - Model OVF 404R / KBA 21310AA1

• Associated wiring, connections, and mounting hardware as necessary

C. Installation of New Components:

For each elevator (GMMS 3361 and 3362), supply and install:

Item Description Quantity per Elevator

Total Quantity

1 GECB EN Controller (Model: CA 26800LC2 or equivalent)

1 2

2 Drive, OVF R03B-404 (Model: KDA 21310ABL2 or equivalent)

1 2

3 SPBC II Communication Board (Model: GAA 26800 NB or equivalent)

1 2

4 326VA Control Transformer 1 2

D. System Integration and Programming:

• Install and connect all new components per manufacturer specifications

• Complete all necessary wiring and electrical connections

• Program and configure GECB controllers for proper operation

• Configure Night Shutdown operation to turn off car lights and close doors when activated

• Configure Capture operation to maintain closed doors and respond to Marine Post controls

• Integrate with existing building security systems and Marine Post controls

• Set all operational parameters per OBO requirements

E. Testing and Commissioning:

• Perform complete system functional testing

• Verify proper operation of all elevator functions including:

o Normal passenger operation (all floors, all speeds) o Door operation and safety features o T17 Night Shutdown Operation - verify car lights turn off and system operates per OBO requirements o T17 Capture Feature - verify doors remain closed and elevator responds to Marine Post controls o Emergency stop and alarm functions o All safety devices and interlocks o Communication with building systems

• Conduct no-load testing per ASME A17.1 standards

• Document all test results

F. Training and Documentation:

• Provide on-site training to Embassy Facility Management staff on new system operation

• Provide training on basic troubleshooting procedures

• Supply complete documentation including:

o Equipment manuals and technical specifications o Programming parameters and settings o Maintenance procedures and schedules o Warranty information o Test reports and commissioning certificates