Technical Exibits combined.pdf
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- Attached to
- Solar Panel Repair and PMIR
- Solicitation number
- 36C26225Q1238
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These Technical Exhibits detail performance requirements and maintenance guidelines for solar photovoltaic inverter systems at the Southern Arizona Veterans Affairs Health Care System (SAVAHCS). The documents include a Performance Requirements Summary (PRS) with seven key performance objectives covering timely invoicing, quarterly documentation, annual service reports, inverter and array cleaning/inspection, special services coordination, and facility check-in/check-out procedures. Each objective specifies precise timing requirements, such as submitting invoices within 4 weeks of service completion and cleaning inverters every 6 months.
The exhibits also provide comprehensive maintenance instructions for Solaron 250 Grid-Tie Photovoltaic Inverters, including warranty information, preventive maintenance guidelines, and detailed maintenance schedules. The site contains multiple solar array locations with various inverter sizes ranging from 250kW to 500kW, installed across different phases between 2010 and 2011. Maintenance tasks include thermal imaging, filter replacements, checking coolant pressure, inspecting surge protectors, and performing semi-annual and annual equipment inspections. The documentation emphasizes safety protocols, proper cleaning techniques, and the importance of maintaining equipment to optimize performance and extend system lifespan.
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| File | Type | Posted |
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| S02 36C26225Q1238 Repair of Solar Panel and PM.pdf |
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TECHNICAL EXHIBIT 1
Performance Requirements Summary (PRS) The Contractor service requirements are summarized into performance objectives that relate directly to mission essential items. The performance threshold briefly describes the minimum acceptable levels of service required for each requirement. These thresholds are critical to mission success.
Performance Objective (The Service required—usually a shall statement)
Standard Performance Threshold
Method of Surveillance
PRS # 1
The Contractor shall provide timely invoices.
The Contractor provided invoice shall be submitted/delivered within 4 weeks following the date the service was completed (e.g., for services completed October 10, 2025, the invoice shall be delivered by November 07, 2025).
92% conformance (11 out of 12)
100 percent inspection
PRS # 2
The Contractor shall provide timely quarterly documentation.
The Contractor provided running list (Excel spreadsheet) of services and repairs shall be delivered within 1 month following the quarter that the service/repair was performed (e.g., for services provided from October 1, 2025 through December 1, 2025, the running list (Excel spreadsheet) shall be delivered by January 31, 2026).
Additionally, the Contractor provided Inverter and Inverter Enclosure cleaning checklist shall be delivered within 1 month following the quarter that the cleaning was performed
75% conformance (3 out of 4)
100 percent inspection
PRS # 3
The Contractor shall provide timely Annual Service reports.
The Contractor provided Annual Service report shall be delivered within 6 weeks from the date the annual service was completed (e.g. if the Annual Service was completed May 14, 2025 then the report shall be delivered by June 25, 2025).
75% conformance (3 out of 4)
100 percent inspection
PRS # 4
The Contractor shall provide timely routine cleaning of inverters and inverter enclosures
NORMAL SERVICE – INVERTER AND INVERTER
ENCLOSURE CLEANING:
The Contractor shall schedule inverter/array maintenance such that:
• Each inverter is to be cleaned/ and the filter replaced every 6 months.
• One of the filter replacements (or cleaning as applicable) shall be scheduled to take prior to the hot summertime temperatures (preferably the filter replacement will take place in April or May).
• Each inverter enclosure is to be cleaned every 6 months.
100% conformance 100 percent inspection
PRS # 5
The Contractor shall provide timely inspection of inverters;
array combiner boxes; string combiner boxes; PV modules; and PV module visible strings.
NORMAL SERVICE – ANNUAL INVERTER AND
ARRAY INSPECTION/SERVICE:
The Contractor shall schedule the Annual Inverter and Array inspection/servicing such that:
• Each inverter is inspected via thermal imaging at least once each fiscal year).
• Array fuses shall be checked at least once each fiscal year.
• Array combiner box(s), string combiner boxes, suspect PV modules are to be inspected via thermal imaging at least once each fiscal year. Hot spot troubleshooting shall be documented.
• The system components, as accessible, is visually inspected for corrosion, evidence of arcing, water infiltration, etc.
100% conformance 100 percent inspection
PRS # 6
The Contractor shall coordinate the special service in a timely manner and provide the special service during the timeframe agreed upon by the Contractor, Contracting, and the COR.
SERVICES OUTSIDE OF NORMAL SERVICE:
• INVERTER AND/OR ARRAY
INVESTIGATION AND REPAIR OF
EQUIPMENT AND COMPONENTS: As requested by the VA to investigate and repair and inverter or array that is not operational.
Contractor shall speak with (or e-mail) the COR within 12 working hours of receipt of request for investigation. The Contractor shall then prepare a proposal for the work within 7 working days and submit this proposal to the COR and Contracting. After a signed modification is in-place, the Contractor shall arrive on-site within 10 working days or as agreed to by the VA and the Contractor (refer to Section 5.2.1).
• PV Module Washing (refer to Section 5.2.2)
• Technical Assistance (refer to Section 5.2.3)
• Training (refer to Section 5.2.4)
Upon VA Request: The Contractor shall provide the special service during the timeframe agreed upon by the Contractor, Contracting, and the COR.
90% conformance 100 percent inspection
PRS # 7
The Contractor shall check-in and check-out during each visit to the facility.
ALL SERVICE:
Contractor personnel shall check-in and check-out with the either the M&O Shop Supervisor, the Electric Shop, or the COR for each visit to the SAVAHCS facility.
100% conformance Periodic surveillance
TECHNICAL EXHIBIT 2
WRITTEN DELIVERABLES SCHEDULE
If any electronic file is too large to send via e-mail, then send via CD. The VA is not allowed to use thumb-drives.
Deliverable Frequency # of Copies Medium/Format Submit To Site-Specific Safety Plan and Copies of OSHA-10 and OSHA-30 cards
Once within 3 weeks of contract award and if critical staff changes.
1 (electronic submission)
Electronic 1 to COR
Invoice
Within 4 weeks of the completion of the service.
Electronic Invoice Submissions (as appropriate)
1 to FSC Austin via the Tungsten Network in accordance with the contract terms and conditions (Electronic Invoice Submissions)
Invoice to be submitted with correct Purchase Order number and correct fiscal year.
Incorrect invoices will be returned/not processed.
List of all services performed (running record)
Within one month following the end of the Quarterly in which services were performed.
*The list of services performed is needed only if services were performed in the previous quarter.
Attachment to Email
1 to COR
Inspection Forms Within one month following the end of the quarter.
*Inspection forms are needed only if inspections were performed in the previous quarter.
Attachment to Email 1 to COR
Annual Inspection/Service Reports
Within 6 weeks from the date the annual service was completed.
Attachment to Email 1 to COR
TECHNICAL EXHIBIT 3
EXAMPLES OF HISTORICAL SERVICES ON SAVAHCS INVERTERS AND ARRAYS
ITEM
DESCRIPTION
1 Carport Structure struck by vehicle. Inspection of modules, module supports, and cabling prior to replacing fascia.
2 Replacement of shattered PV modules due to bullet holes.
3 Several rows of ground-mount array not tracking properly.
Manufacturer’s technicians on-site to evaluate/resolve – blown board and fuses.
4 Solaron Inverters: Manufacturer’s technician on site to replace 3 internal inverter fuses with busbar for all Solaron inverters. Also enhance door closing/locking mechanism on Solaron 500 inverters.
5 Solaron Inverter: Manufacturer’s technician on-site to replace inverter internal AC contactor.
6 One row of ground-mount array not tracking properly. Manufacturer’s technicians on-site to evaluate/resolve – software programming issue.
7 DC disconnect within inverter enclosure switch handle not closing properly (“loose”).
8 Solaron Inverter: Inverter not recording generation data – suspect MOXA unit needs to be replaced.
9 Solaron Inverter/Array: Inverter will not fully power up – suspect imbalance of PV array due to storm
10 Shark Meters – 1) reporting negative kW, 2) needed amperage adjustment.
11 Main control boards for three inverters went bad during the summer and the control boards required replacement.
12 Cooling fans on a few of the A/E Solaron inverters replaced.
13 Investigation of bad strings on carport structure arrays (VA removed the undersheeting)
14 Site 5B: large AC fuses blow about once a year (different leg each time)
15 SATCON inverter experiencing AC imbalance issues beginning the end of December 2019. (Issue not resolved yet).
16 Ground mount tracker: many telescoping arms bound-up and screw motors potentially stripped. (Repairs not completed yet).
T a lly Location Project
Phase
Inverter
Size
(kW ac)
Inverter Date
Code
Parking
Lot
Array Size kW dc
Number of
Modules Module
Wattage
1 Site 1 Phase 2 500 Solaron Inverter, 500 kW, 480 V, 3 PH 3159500-0000 AD 779554 F/R AD 11-2010 Lot G 570.15 2534 225
2 Site 2 Phase 2 500 Solaron Inverter, 500 kW, 480 V, 3 PH 3159500-0000 AC 779236 F/R AC 11-2010 Lot F 475.65 2114 225
Site 3 Phase 2 Lot K 365.4 1624 225
Site 11 Phase 3 Lot K 118.44 504 235
4 Site 4 Phase 2 250 Solaron 250 Grid-Tie Photovoltaic Inverter, 250 kW, 480 V, 3 PH 3159200-0001 AC 779556 F/R AC 11-2010 Lot M 214.2 952 225
5 Site 5A Phase 2 333 Solaron Inverter, 333 kW, 480 V, 3 PH 3159000-0000 AB 778017 F/R AB 11-2010 Lot Q 229.95 1022 225
6 Site 5B Phase 2 333 Solaron Inverter, 333 kW, 480 V, 3 PH 3159000-0000 AC 779966 F/R AC 11-2010 Lot Q 422.1 1876 225
Site 6 Phase 2 Lot A 170.1 756 225
Site 9B Phase 3 Lot T 39.48 168 235
8 Site 7 Phase 2 500 Solaron Inverter, 500 kW, 480 V, 3 PH 3159500-0000 AD 779552 F/R AD 11-2010 Lot E 459.9 2044 225
9 Site 8 Phase 3 500 Solaron Inverter, 500 kW, 480 V, 3 PH 3159500-0001 AH 815557 F/R AH 09-2011 Lot B 539.56 2296 235
Site 9 Phase 3 Lot P 236.9 1008 235
Site 9A Phase 3 Lot N 88.8 378 235
11 Site 10 Phase 3 250 Solaron 250 Grid-Tie Photovoltaic Inverter, 250 kW, 480 V, 3 PH 3159200-0001 AE 815732 F/R AE 09-2011 Lot L 190.82 812 235
12 Site 12 Phase 3 250 Solaron 250 Grid-Tie Photovoltaic Inverter, 250 kW, 480 V, 3 PH 3159200-0001 AE 816249 F/R AE 10-2011 Lot C 151.34 644 235
Ground-
Mount
Array
Phase 1 250 SATCON Inverter, PVS250 - PowerGate Plus 250 kW, 480 V, 3 PH n/a 301.84 1372 220 a/ Site 11 was added to Site 3 during Phase 3. 20104 b/ Site 9B was added to Site 6 during Phase 3.
c/ 1372 modules in Phase 1 d/ 12922 modules in Phase 2 e/ 5810 modules in Phase 3
F/R AC 11-2010
Inverter Model Number (M/N) Serial Number (S/N)
3 500 Solaron Inverter, 500 kW, 480 V, 3 PH 3159500-0001 AK 822459 F/R AK
VA TUCSON: PV SITE, INVERTER AND MODULE INFORMATION
F/R AC 11-201010 333 Solaron Inverter, 333 kW, 480 V, 3 PH 3159000-0000 AC 779815
12-2011
7 250 Solaron Inverter, 250 kW, 480 V, 3 PH 3159200-0001 AC 779670
Remember: Never at any point stand on, walk on, lean on or apply pressure to the panels as this can cause both visible and non-visible damage to the panel.
Fig. 2 Dust fall on solar panels.
Fig. 1 An example of dust build-up on solar panels over time.
Quick guide to cleaning Ensuring the best performance of REC Peak Energy solar panels Clean solar panels help ensure your solar installation generates optimal electricity. REC Peak Energy panels have been designed for easy installation and minimal maintenance, however, dust, pollen, leaves and other contaminants often find their way onto the panel and soil the surface. To overcome this, REC panels are manufactured with self-cleaning properties, where sufficient rainfall will clean them naturally if installed at a sufficient angle.
Nonetheless, factors such as the amount of dust and dirt in the air, the amount and regularity of rainfall and the optimum angle of installation are dependent upon location and the self-cleaning properties of the panel will not necessarily guarantee a permanently clean and dirt-free panel surface.
The dirt itself will not harm the panels, but allowing it to build up over time can affect system performance. Therefore, to optimize the electrical output, it is recommended to clean the panels when dirt can be seen on the glass surface.
Before cleaning
Panel cleaning should be carried out before reaching working temperature i.e. early morning and must only be cleaned with water at ambient temperature to avoid thermal shock.
Cleaning the front or rear of panels should only be carried out when the panels are cool to avoid thermal shock. During the day, ambient temperature rises and the panels heat up as they produce energy, usually to around 20°C above the surrounding conditions. Applying cool, cold or lukewarm water to hot panels can cause components (e.g. glass) to shrink rapidly, potentially causing cracks and breakages. Inversely, the application of hot or boiling water to cold panels may cause rapid expansion of components and similar breakage.
Ensure the water used is free from grit and physical contaminants that could damage the panel surface.
Staying safe Solar installations come in different shapes and sizes, so the following steps are meant as a guide only and the installation should be assessed for safety and access before commencing cleaning. If in doubt at any time when cleaning the panels, stop and obtain professional advice.
Safety When working at heights, use fall and personal protection measures throughout the cleaning process.
The panel is designed to carry the certified load across its whole surface area. Standing on the panels applies force through a much reduced surface area, which can far exceed the certified design load. Equally avoid dropping or allowing any objects to fall on the panel as the impact may cause the panels to break or detach from the understructure, possibly resulting in damage or personal injury.
Damaged panels can present a lethal shock hazard due to leakage currents. The risk of shock is higher when panels are wet. Before cleaning, thoroughly inspect panels for cracks, damage, and loose connections.
Therefore, only water at ambient temperature should be used.
Ideally, de-ionized water should be used to clean the panel. De-ionized water is water that has had the mineral ions and salts removed. If de-ionized water is not available, rainwater, tap water or diluted alcohol may be used as a secondary solution.
Fig. 3: A clean and functioning solar installationFor further cleaning If the panels require more cleaning effort to remove stubborn marks, use a soft sponge, microfiber cloth or non-abrasive brush and lightly wipe over the affected area. This may be mounted on an extension pole for an extended reach.
Treatment in this maner should remove any loose soiling from the panel glass.
Care must be taken not to scratch, mark or introduce any foreign elements to the glass surface
If marks still remain on the panels, a mild biological and biodegradable washing-up liquid may be used on the panels.
The panel must be immediately rinsed with plenty of water.
Rinsing To rinse the panels, apply as much de-ionized water as required to the highest point of the panel or system until all the loose soiling and/or cleaning solution is washed off. If soiling remains on the panels after rinsing, repeat the cleaning procedure or if any soiling continues to prove stubborn, IPA (Iso-propyl Alcohol) with a concentration of less than 10% may be be used. Acid or Alkali detergent must not be used.
Drying The best way to dry panels is to leave them to dry naturally in the air. If for some reason this is not possible, they can alternatively be wiped dry with a chamois or by use of a rubber squeegee with a plastic frame on an extension pole. Wipe the panel surface from the top downwards to remove any residual water from the panel glass, but pay attention that any leftover grains of dirt or sand do not scratch the surface of the panel.
Snow If required, snow can be brushed or wiped from the panels in the same way as described for cleaning (i.e., with a non-abrasive brush). Beware of snow slippage from higher areas.
However, as snowfall generally occurs at times of the year when irradiation is at its lowest, clearing snow build-up from the panels is not essential for maximum performance.
Congratulations, after completing this process, the panels are now clean and working at optimum efficiency again. With the right practices, cleaning solar panels should be easy and safe.
Avoid putting pressure on the panel surface when drying
The use of pressure or steam cleaners and high pressure hoses, knives, blades and metallic sponges is not permitted on REC panels and will invalidate the warranty.
Cleaning the panels
Washing the panels A standard flexible garden hose with domestic water pressure may be used to apply as much water to the panel or array as necessary, allowing the water to run down the entire surface.
Although REC panels are manufactured to international standards and have passed all relevant certification tests, the use of high pressure hoses for cleaning is not permitted as these may exert pressure in excess of the certified load and cause impact damage, damage to the frame bonding, the laminate or cells and force water between the glass and frame.
REC is a leading global provider of solar electricity solutions. With nearly two decades of expertise, we offer sustainable, high-performing products, services and investment opportunities for the solar and electronics industries. Together with our partners, we create value by providing solutions that better meet the world’s growing electricity needs. Our 2,300 employees worldwide generated revenues of more than NOK 7 billion in 2012, approximately EUR 1 billion or USD 1.3 billion.
Renewable Energy Corporation ASA Kjørboveien 29 PO Box 594 1302 Sandvika Norway Tel: +47 67 57 44 50 www.recgroup.com
| TECHNICAL EXHIBIT 1 - Performance Requirements Summary |
| TECHNICAL EXHIBIT 1 |
| TECHNICAL EXHIBIT 2 - Written Deliverables Schedule |
| TECHNICAL EXHIBIT 3- Examples of Historical Services on SAVAHCS Inverters and Arrays |
| Technical Exhibit 4_Map of Solar Arrays |
| Technical Exhibit 5_Table of Inverters and Modules |
| Technical Exhibit 6_Solaron Inverter Maintenance |
| Technical Exhibit 7_Satcon Inverter Maintenance |
| Technical Exhibit 8_REC PV Panel Quick Guide Cleaning |
File details come from the government source that posted it. Updated .