Services · Maintenance & contracts

Maintenance programs & partner network

Tiered annual maintenance contracts and preventive-maintenance programs that keep every centrifugal fan on your site running — whoever built it. You get scheduled visits, a response SLA and ISO 21940 balancing on one contract, in place of ad-hoc breakdown spend.

Most fan-maintenance offers stop at the maker's own machines. Jitamitra's do not: our annual maintenance contracts and preventive-maintenance programs cover any make of centrifugal fan, so a single contract can span a mixed fleet — our fans, a competitor's, obsolete and orphaned units alike. You trade unplanned breakdown spend for a guaranteed service cadence, a promised response time and a fixed annual cost.

Because we design, build and overhaul fans in-house, each scheduled visit runs documented maintenance procedures — bearing-temperature and vibration rounds, lubrication, motor-current checks, and impeller and blade-root inspection — and any rotor we touch is re-balanced to ISO 21940 grades before the fan goes back to duty. Faults get caught on the calendar, not on the breakdown call, and every visit lands as a written report in your maintenance log.

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What we do

Annual Maintenance Contracts (tiered)

Wrap scheduled preventive visits, an agreed spares arrangement and a response SLA into a multi-year contract, tiered from a basic plan up to sensor-bundled cover, on any make of centrifugal fan. Each visit runs the same documented maintenance procedures and re-balances rotors to ISO 21940 grades where work is done. You get a guaranteed service cadence, priority response and a fixed annual cost in place of ad-hoc breakdown spend.

Standard/method. Underlying maintenance follows Jitamitra Manual Section 7; re-balancing to ISO 21940 / ISO 21940 grades (G6.3 general, G2.5 critical) and vibration assessment to ISO 20816 / ISO 14694 where applicable. The AMC itself is a commercial contract, not a technical standard.

Preventive maintenance programs

Run scheduled site visits on a duty-based calendar — regreasing bearings, logging bearing-temperature and vibration monthly, checking three-phase motor current quarterly (any phase imbalance over 5% investigated), and inspecting the impeller for deposit and blade-root cracks. Every finding is written to a documented inspection report and your maintenance log, with blades flagged for replacement past 20% erosion and rotors re-balanced to ISO 21940 G6.3/G2.5 after any work. It covers any make of centrifugal fan, so one program spans a mixed fleet.

Standard/method. ISO 21940 / ISO 21940 (balance grades G6.3 general, G2.5 API/critical, applied when a re-balance is done). Vibration assessment references ISO 20816 / ISO 14694 acceptance limits. Lubrication, inspection and overhaul follow Jitamitra Manual Section 7 procedures.

Authorized service partner network

Building a network of vetted independent service firms, certified and trained to our own maintenance and balancing standards (ISO 21940 / ISO 20816-3), to deliver fan service under the Jitamitra brand closer to your site. The model runs both ways — we authorise partners, or serve as an authorised partner for another OEM — extending brand-backed coverage without local payroll. This is a capability in development, offered on enquiry, not an operating network today.

Standard/method. No product test standard governs the channel model itself. Partner service quality would be benchmarked to Jitamitra's service basis - ISO 21940 / ISO 21940 balance grades and ISO 20816-3 vibration acceptance for the field work partners perform - but the network's certification, audit and brand-governance criteria are commercial terms, not a published standard. Engineered to programme / on enquir

Questions buyers ask

Can you maintain a fan that Jitamitra didn't build?
Yes. We maintain any make of centrifugal fan — servicing other manufacturers' fans is a core part of our service business — so one contract can cover your whole mixed fleet, obsolete and orphaned units included.
How is a maintenance contract different from just calling you when a fan breaks?
A contract guarantees scheduled preventive visits and a promised response time, so problems are caught early and you get priority when you do call. Breakdown-only service has neither — you wait in the queue, and small faults become failures.
How often will you visit, and what do I get after each visit?
Frequency is set from your duty data — dusty and high-temperature service needs shorter intervals than clean ventilation. Typical rounds are bearing temperature and vibration monthly and motor current quarterly. Each visit ends in a documented inspection report and entries in your maintenance log covering bearing condition, vibration, lubrication, drive status and any erosion or crack findings.
Are spares included in the contract?
That depends on the tier. Spares can be included or pre-stocked, and we define the arrangement per contract based on your fans and their criticality — from a basic plan up to sensor-bundled cover.
Do you operate an authorised service partner network?
Not yet. A vetted partner network — independent firms trained to our maintenance and balancing standards to deliver Jitamitra-brand service closer to your site — is a capability we are building, offered on enquiry. Today the maintenance and preventive programs are delivered by our own crews.

Related reading

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