that o-ring arethat o-ring are
correctly in place to avoid leaks.correctly in place to avoid leaks.
al bulb must be instalal bulb must be instal
Figure 4-13. Interface area must be clean to ensureFigure 4-13. Interface area must be clean to ensure
to suction line and insulate.to suction line and insulate.
Protect capilProtect capil
lary loop from viblary loop from vib
rate using hearate using hea
service valve.service valve.
Open King valve and then Open King valve and then
(Refer to section 4.8.2)(Refer to section 4.8.2)
10.Check superheat.10.Check superheat.
SETTING SCREWSETTING SCREW
suction line.suction line.
n one expansion one expansio
n valve bulb clamp and man valve bulb clamp and ma
valve bulb and then secure loosened clamp makingvalve bulb and then secure loosened clamp making
sure both bulbs are firmly secured to suction line.sure both bulbs are firmly secured to suction line.
nsion valve bulbnsion valve bulb
When conducting this test the suction pressure mustWhen conducting this test the suction pressure must
maximum operating pressure (MOP). For example:maximum operating pressure (MOP). For example:
recommended test pressure should be below 3.44recommended test pressure should be below 3.44
ct an accurate gauct an accurate gau
ge to the 1/4” port on thege to the 1/4” port on the
evaporator suction line.evaporator suction line.
t until stabilt until stabil
ized. Set conized. Set con
below box temperature.below box temperature.
evaporator outlet pressure.evaporator outlet pressure.
expansion valve bulb.expansion valve bulb.
Subtract the saturation temperature determined inSubtract the saturation temperature determined in
7. The difference is the superheat of the suction gas.7. The difference is the superheat of the suction gas.
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