Service Department The Service Department is the provision of on-site maintenance and repair services on these systems, both those supplied by the company and also those supplied by third parties. Pyrotec Services Ltd has a wealth of experience in the maintenance and repair of third party systems. The provision of the services and products are generally, but not exclusively, supplied to the recommendations of the following guides or British Standards; BS5839: Part 1: 1988 BS5266: Part 1: 1988 Fire code - HTM82 & HTM83