SYNTHETIC ROOF PRECAUTIONARY PROCEDURE
1. Cover extended roof working area with an impermeable
polyethylene (plastic) drip cloth or tarp. Cover an approximate
10 x 10 ft. area.
2. Cover area in front of the unit service panel with a terry cloth
shop towel to absorb lubricant spills and prevent run-offs, and
protect drop cloth from tears caused by tools or components.
3. Place terry cloth shop towel inside unit immediately under
component(s) to be serviced and prevent lubricant run-offs
through the louvered openings in the base pan.
4. Perform required service.
5. Remove and dispose of any oil contaminated material per
local codes.
LIQUID LINE FILTER DRIER — The filter drier is specifically
designed to operate with Puron. Use only factory-authorized
components. Filter drier must be replaced whenever the refrigerant
system is opened. When removing a filter drier, use a tubing cutter
to cut the drier from the system.
Do not unsweat a filter drier
from the system.
Heat from unsweating will release moisture and
contaminants from drier into system.
PURON (R-410A) REFRIGERANT CHARGING — Refer to unit
information plate and charging chart.
Some R-410A refrigerant
cylinders contain a dip tube to allow liquid refrigerant to flow
from cylinder in upright position.
For cylinders equipped with a
dip tube, charge Puron units with cylinder in upright position and
a commercial metering device in manifold hose. Charge refrigerant
into suction-line.
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