onsdag 22 april 2015

Cleaning High Level

Cleaning High Level Ducting & Pipes
1  Operatives to check all PPE, cleaning equipment and chemicals required for the task. Refer to COSHH assessments supplied for chemicals being used. Operatives to set out all ‘Caution/Warning’ signage required and cordon off cleaning area prior to work commencing.
2  Operatives will erect ladders at the correct angle of 1:4 (75º). If working between 2 - 6 metres in height ladders must be footed or an approved ladder stopper or stabiliser used. If working between 6 -9 metres in height ladders must be fitted with approved top and bottom stabilisers unless there is a ladder tie system in place in which case the ladders must be tied off.
3  Operatives will wear a tool belt and ensure that all hand tools are secured to the belt via a lanyard.
4  Operatives will climb ladders using both hands at all times. Do not climb above 4 rungs from the top.
5  Operatives to commence cleaning, keeping one hand on the ladder at all times. Operatives are warned not to over reach or stretch when working on ladders.

onsdag 15 april 2015

Duct Moisture

Duct Moisture • The presence of moisture in air conditioning ducts is common since the air leaving the air conditioner evaporator is saturated. In Florida, air conditioning is used most of the year providing little time for ducts to dry out. • High moisture in ducts can cake dirt and provide an environment for mold to grow. This situation leads to serious indoor air contamination problems. Cleaning Air Conditioning Ductwork Through neglect, or sometimes normal use over long periods of time, air handling ducts in homes accumulate dirt and molds and bacteria begin to grow. Often the situation is identified when family members begin to experience allergic symptoms. The house has become "sick." Can the ducts in a "sick-house" be restored to a safe level? The question of how to restore contaminated air supply systems is becoming an urgent one. This

fredag 10 april 2015

WHEN TO TEST

WHEN TO TEST Duct testing is strongly recommended when a new heating and/or air conditioning unit is being installed. If the existing duct system is leaky and inefficient before the new unit is installed, it will still be leaky and inefficient after the new unit is installed—unless the ducts are tested and sealed by a qualified contractor. It does not make sense to install a new, energy-efficient heating and/or air conditioning unit unless the duct system is also energy efficient. Duct testing is also recommended when a diagnostic tune-up is performed on a heating and air conditioning unit. A diagnostic tune-up can improve the operating efficiency of the heating or air conditioning unit itself, but the overall efficiency will still be less than adequate if the duct system is not in good condition. A duct test is necessary to determine leaks, needed repairs, and/or renovations. Duct testing can be performed at any time, however, whether or not new energy efficiency equipment is being installed. It is not unusual to find that sealing, repair, or renovation must be performed to complement a comprehensive HVAC installation