Greenheck MPX (472695) - Manual (Page 24)

CIRCUIT A
o Compressor:
_______ L1 amps
_______ L2 amps
_______ L3 amps
_______ Crankcase Heater
Superheat
_______Deg. F.
Should be between 8º and 12ºF.
Subcooling _______Deg. F.
Should be between 12º and 18ºF.
Discharge Pressure ________ PSIG
Discharge Line Temperature _______Deg. F.
Suction Line Pressure ________ PSIG
Suction Line Temperature _______Deg. F.
Moisture Indicating Sight Glass located on copper
tube liquid line
Bubbles Visible Yes / No
If bubbles are visible in sight glass, stop the start-up
process. Refrigerant charge may not be adequate.
Consult factory
.
Color of Center Dot Green / Yellow
Hot Gas Bypass Operational Yes / No
(Not present on digital scroll compressors)
CIRCUIT B - if present
o Compressor:
_______ L1 amps
_______ L2 amps
_______ L3 amps
_______ Crankcase Heater
Superheat
_______Deg. F.
Should be between 8º and 12ºF.
Subcooling _______Deg. F.
Should be between 12º and 18ºF.
Discharge Pressure ________ PSIG
Discharge Line Temperature _______Deg. F.
Suction Line Pressure ________ PSIG
Suction Line Temperature _______Deg. F.
Moisture Indicating Sight Glass located on copper
tube liquid line
Bubbles Visible Yes / No
If bubbles are visible in sight glass, stop the start-up
process. Refrigerant charge may not be adequate.
Consult factory
.
Color of Center Dot Green / Yellow
Hot Gas Bypass Operational Yes / No
(Not present on digital scroll compressors)
NOTE
Refrigeration System Start-Up Checklist must be
performed by a Qualified Refrigeration Technician.
If a digital scroll compressor is installed in the unit,
make certain that all current readings are taken
when compressors are running under load. See the
Digital Scroll Compressors section in this manual
for further information.
Start-Up Checklist
(continued)
Outdoor Air Temperature __________ Deg. F.
Wet Bulb Reading or Dew Point or Outdoor Air
Relative Humidity
(indicate which) _________________
Condensing Fans
Each unit having DX is equipped with 2 or 3
condensing fans.
o
Condensing Fan 1:
_________ L1 amps
_________ L2 amps
_________ L3 amps
o Condensing Fan 2:
_________ L1 amps
_________ L2 amps
_________ L3 amps
o Condensing Fan 3:
if present
_________ L1 amps
_________ L2 amps
_________ L3 amps
o Condensing Fan 4:
if present
_________ L1 amps
_________ L2 amps
_________ L3 amps
Compressors
Each DX unit is equipped with either one or two
compressors. Each compressor is part of a separate
refrigeration circuit.
24 Model MPX Make-Up Air Unit
®