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 22 april 2015
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
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