Cold Storage Maintenance Services in Vietnam

Cold storage maintenance is the scheduled inspection, cleaning, adjustment and parts replacement that keeps a system holding its design temperature and stops it failing without warning. Tan Long provides maintenance for cold stores and industrial refrigeration systems throughout Vietnam, including systems installed by other contractors, following a survey and an assessment of the equipment's current condition.

What cold storage maintenance involves

Frequency	What is checked	Purpose
Monthly	Cleaning the air coolers and condensers, checking door gaskets, logging temperature and pressure readings	Maintains heat exchange efficiency, catches leaks early
Quarterly	Checking compressor oil, re-tightening electrical terminations, checking expansion and solenoid valves	Prevents failures caused by wear and by poor electrical contact
Half-yearly	Checking the defrost system, calibrating sensors, testing the fault alarms	Ensures the room is still protected when something goes wrong
Annually	Leak testing the whole refrigerant system, assessing pipe insulation, inspecting pressure vessels	Operational safety and compliance with pressure equipment regulations

The exact schedule is adjusted to how hard the system works. A store running three shifts with constant movement needs shorter intervals than a storage room with little variation.

Signs a cold store needs checking now

The room takes longer to pull down than it used to with the same intake volume — usually dirty coils, a low refrigerant charge or a leaking door gasket.
Unusually heavy ice build-up on the air cooler or uneven frosting — a sign the defrost system is not working properly.
The electricity bill rising while throughput stays the same.
Condensation or damp on ceilings, walls or pipework — failed insulation or open panel joints.
Compressors cycling on and off constantly, or unusual noise or vibration.
The floor heaving or cracking in a deep-freeze room — a warning that the sub-floor frost protection has a problem.

Taking over systems built by other contractors

Tan Long takes on systems it did not install. The handover process has four steps, kept separate so the investor knows exactly what is being paid for:

Stage	Content	Output
1. Condition survey	Inspecting the equipment, measuring operating parameters, recording faults	Condition report
2. Assessment report	Classifying what is still sound, what needs repair and what needs replacing	Technical report with priority ratings
3. Proposal	A scheduled maintenance package, or corrective repairs first and maintenance afterwards	Itemised quotation
4. Contract and start of work	Fixing the intervals, the scope of work and the guaranteed response time for a breakdown	Contract and maintenance schedule

Where a system has no technical documentation — very common in a store that has passed through several contractors — Tan Long rebuilds the schematic diagram and the equipment schedule during the survey, so the next maintenance visit does not start from scratch.

Repair and equipment replacement

Beyond scheduled maintenance, Tan Long repairs and replaces the main equipment groups of an industrial refrigeration system: compressors, air coolers, evaporative condensers, pressure vessels, valves and pipework, and control panels. Because it manufactures its own equipment at the plant in Duc Hoa, Tay Ninh (formerly Long An), Tan Long can build replacement air coolers and pressure vessels to the existing installation dimensions, instead of leaving the investor waiting for an import or having to rework the mounting position.

Why scheduled maintenance costs less than breakdown repair

The cost of one cold store failure is not just the repair bill. Three items are usually several times larger:

The value of the spoiled goods. A seafood or food store that loses temperature for a few hours can lose more than several years of maintenance costs.
Production line downtime. A processing plant cannot run once it loses its freezing capacity.
Certification and contract risk. A temperature excursion affects traceability records and the delivery conditions agreed with export partners.

Scheduled maintenance does not remove the risk entirely, but it moves most failures from “sudden stoppage” to “found early and fixed to plan” — that is, dealt with while the store is empty rather than in the middle of peak season.

Frequently Asked Questions

Does Tan Long maintain cold stores installed by other contractors?

Yes. Tan Long takes on maintenance and repair of refrigeration systems built by other contractors, after a condition survey and an assessment report. Where a system has no documentation, Tan Long rebuilds the schematic diagram and the equipment schedule during the survey.

How often should a cold store be maintained?

The common cycle is monthly for the air coolers and door gaskets, quarterly for the compressors and the electrical scope, and annually for refrigerant leak testing and pressure equipment. A store running three shifts or with constant movement needs shorter intervals.

Why does a cold store fail to reach temperature?

The usual causes, in order: dirty air coolers or condensers, a low refrigerant charge from a leak, leaking door gaskets, a defrost system not working properly, and only then a loss of compressor performance. Operating parameters have to be measured to identify the real cause before any equipment is replaced.

Does Tan Long build replacement equipment for existing systems?

Yes. Tan Long builds air coolers, pressure vessels and certain equipment groups to the existing installation dimensions at its plant in Duc Hoa, Tay Ninh, so there is no need to rework the mounting position or wait for an import.

How is cold storage maintenance priced?

The cost depends on the number and type of items of equipment, the maintenance interval, and the distance to the plant. Tan Long quotes after the survey, separating the scheduled maintenance from any initial corrective repairs if the system already has faults.

Book a maintenance survey

Tan Long carries out condition surveys of cold stores and industrial refrigeration systems throughout Vietnam. Call 0933 357 058 (Mr. Thinh) or send a survey request with the store type, temperature range and the problem you are seeing.