Chiller Service and Maintenance Agreements

Standard practice is minor maintenance every 6 months and major maintenance every 8,000–15,000 operating hours or every 2–3 years, depending on compressor type. For equipment operating continuously, in dusty environments or at high ambient temperatures, minor maintenance intervals are reduced to 3–4 months. The facility operator performs monthly visual and operating-value checks.

Under Türkiye's Regulation on Fluorinated Greenhouse Gases, equipment with a refrigerant charge of 5–50 tonnes CO₂e requires leak checks every 12 months, 50–500 tonnes CO₂e every 6 months, and over 500 tonnes CO₂e every 3 months. CO₂e is calculated by multiplying the refrigerant charge in kilograms by its GWP value; inspections and results are recorded.

Depending on compressor type, it is carried out after 8,000–15,000 operating hours or every 2–3 years; oil analysis, operating values and manufacturer requirements may shorten this interval. Major maintenance renews the oil, oil filter, filter drier, seals and compressor maintenance components.

When the difference between condensing temperature and outdoor air temperature exceeds 15 K, the condenser is considered dirty. Compressor consumption then rises by 10–20%, and the risk of high-pressure alarms increases during summer. Condenser cleaning is one of the maintenance tasks with the fastest payback.

Site response is planned within 24 hours in the Marmara Region and within 48–72 hours elsewhere. The Comprehensive Maintenance Agreement includes a 24/7 service line and priority response; response times are specified in writing in the contract.

This depends on the agreement level. Parts are quoted separately under the Periodic Inspection Agreement. Preventive Maintenance includes specified consumables, while Comprehensive Maintenance also includes separately listed spare parts. Included and excluded parts are clearly listed in the contract.

Because the required refrigerant quantity varies with leak size and equipment capacity, it is usually assessed according to the quantity used. If it is included in the agreement, the quantity and application conditions are defined separately. When a leak is identified, the leak is repaired rather than simply topping up the refrigerant.

No. Sudden electronic failures, mechanical breakage or external factors cannot be completely prevented. Planned maintenance aims to identify developing problems early and reduce the risk of avoidable failures.

Some inspections are performed while equipment is running. Electrical panel work, part replacements and certain cleaning tasks require a controlled shutdown. Downtime is planned around the facility's production schedule; at sites with multiple units, maintenance is carried out one unit at a time.

Yes. Different brands and models are assessed within the same equipment inventory; a separate maintenance checklist and consumables list is prepared for each unit.

Measured pressures, temperatures, superheat/subcooling, current and operating values are included in the service report and compared with the previous maintenance visit. A specific capacity or COP analysis requires additional flow and simultaneous electrical power measurements.

A technical survey is recommended if equipment condition, previous faults and maintenance needs are unknown. Surveys are planned within 1 working day in the Marmara Region and 2–3 working days elsewhere. The survey verifies the equipment inventory and identifies the maintenance, consumables and corrective work to be included in the agreement.