Service frequency gets sold as a fixed number - quarterly, twice a year - when it should be derived from what your site actually does to a camera. A dusty factory floor and a clean office lobby do not belong on the same schedule, and pricing them identically means one is over-serviced and the other is neglected.
There is no universal correct number
The honest starting point is that service frequency is a function of environment, not a fixed best practice. Two identical camera systems in different conditions can need visits a year apart in frequency and both be correctly scheduled. A vendor who quotes the same interval regardless of site has not looked at your site.
What actually drives the interval
- Dust and airborne particulate. A factory floor with fine dust needs domes cleaned far more often than a residential entrance, sometimes monthly rather than quarterly.
- Monsoon exposure. Anywhere in this climate, the pre-monsoon check in May and a post-monsoon inspection in September are worth more than an evenly spaced quarterly schedule that happens to miss both.
- Vibration and mechanical wear. Boom barriers and access-controlled doors with high daily cycle counts need more frequent mechanical checks than the cameras on the same site.
- Site criticality. A cash-handling area or a plant perimeter with real consequences for downtime justifies tighter intervals than a low-traffic storeroom.
- System age. A disk or UPS battery approaching end of life needs closer watching than one two years into its service life.
A schedule built from these factors, position by position, is more useful than one blanket number applied to the whole site.
The signs your current schedule is too loose
- A visit report regularly finds a problem that has clearly existed for weeks, not days - the schedule missed it, not the technician.
- Domes are visibly dirty on arrival at every visit, meaning dust accumulates faster than the interval clears it.
- Retention has quietly shortened between visits without anyone noticing until it was checked.
- The same fault recurs each visit because the interval is too long for the underlying cause to be caught early.
Any of these is a reason to tighten the schedule at renewal, not evidence that the vendor is doing a bad job at the interval they were given.
What a visit should take, not just how often
Frequency without content is not a maintenance plan. Whatever the interval, each visit should cover: dome and lens cleaning, cable and connector inspection, disk health and retention verification, power supply output under load, and a written report of what was checked and found. A quarterly visit that only wipes lenses is worth less than a twice-yearly visit that actually opens the disk status page.
Setting the number for your site
A reasonable starting point for most sites: quarterly for general residential and office use, monthly dome cleaning in genuinely dusty industrial zones, and two dedicated visits timed around the monsoon regardless of the regular schedule. From there, adjust based on what visit reports actually find - if nothing is ever wrong, the interval could safely lengthen; if something is wrong every time, it needs tightening.
The number matters less than whether anyone is reviewing what each visit finds and adjusting from there. A fixed schedule nobody revisits is just as much a gap as no schedule at all.
Common questions
Is more frequent servicing always better?
Not necessarily worth the extra cost on a clean, low-traffic site with a stable, working system. The value of frequency is catching problems before they cause a gap in coverage, and on a site where nothing changes between visits, more frequent visits mostly find nothing. Match the interval to what your visit reports actually show over a year.
Can we do some servicing ourselves between professional visits?
Wiping visible dust off accessible domes and checking that the recorder shows all channels live are reasonable between-visit checks anyone can do. Disk health, retention verification, power supply testing under load and mechanical checks on barriers need a technician with the right tools and access to the recorder settings.
Does servicing frequency affect our AMC price?
Yes, and it should be visible on the contract as a line item rather than folded into one figure. A higher-frequency schedule for a dusty industrial zone costs more than a standard residential schedule, and a contract that charges the same regardless of frequency is either overcharging the light-use site or underserving the heavy-use one.