Service and Maintenance 31
level of stability required for installations which may include high-sided splits or VRF units. So what is the answer? An economical solution to these installation headaches is to use non-penetrative, repeatable support structures mounted on anti-vibration mats. These structures are configurable in that they can be adjusted according to the demands of each individual project. Designed to meet the changing needs of a building the supports can easily be moved or adapted to fit new requirements, allowing building owners to easily make further upgrades to plant as needed.
For example, Big Foot Systems’ light duty range is non-penetrative, quick to install, robust and offers an array of solutions to support a variety of air handling units and air conditioning systems. Frame kits for most major manufacturer’s VRF units are available from stock. These will suit most applications including extract and supply fans, air conditioning, VRF units and air handling units. These non-penetrative support systems, in the form of frameworks that are wider than the unit they are supporting, afford a greater degree of protection against tipping. To determine the correct frame for an installation Big Foot runs calculations that consider the cumulative
weight of the supported unit, roof capability, whether the installation is wind protected or not and Meteorological Office information relating to local peak wind speed. These calculations establish the size of frame required to prevent plant tipping, and the number and size of foot bases in contact with the roof needed to ensure the cumulative weight is dispersed evenly over the roof area and is within workable loads of the roof build up, which improves safety for the service engineer and pedestrians below.
Problems with resistances caused by the vertical surface area are also dealt with by these support frames. For example, when split air conditioning units are arranged on roof supports, the frames allow them to be installed with a one metre distance between each split unit, securing them firmly in a uniform manner. This results in a high degree of stability in strong winds. The plant is also clamped to the supports giving it further stability. Maintenance is easier with these innovative frameworks because the supports raise the AC units above the flat roof making them more accessible and creating space to run pipes. Suitable for both new build installations and retrofitting non-penetrative systems are quick and easy to install ensuring project cost and time clarity, negating a need for time consuming and costly penetrations through the roof.
S R W 2 Way R410 Manifold Set
Front wheel R410 manifold set complete with 60 " hoses and case
A real bargain at just £49.00
Service and Maintenance 31
Nitrogen Regulators
Top quality twin gauge 50 bar single stage nitrogen regulator for pressure testing etc. of systems including R410 connection.
Vacuum Pumps
Robinair 15401 3.33 cfm £289.00 15601 5 cfm £309.00 15121 8 cfm £695.00
Mastercool 90060 1.25 cfm £159.00 90063 3cfm £149.00 90065 4.2 cfm £229.00 90067 6.3 cfm £269.00 90070 7 cfm £289.00
SRW Recovery Machines
Mastercool 69300 twin turbo £575.00 69300 dual voltage £620.00 69000 69200
£595.00 £649.00
Promax RG3000 Mini max
£549.00 £629.00
RG5410 extreme £960.00 all above available in 240 or 110v
Digital Vacuum Gauge
Mastercool 98061 high accuracy digital vacuum gauge with thermister head.
Range : 20,000 - 1 micron Display :Micron, Torr, mTorr, mmHg, mBar, or Pa
Clear indication reads in 1 degree steps across full range.
01273 455530 Fax 01273 455575
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