Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting page 103

C. Unit Start-Up (cont)
Voltage imbalance = (max. Deviation) x 100 = % voltage imbalance
If over 2% voltage imbalance, do not attempt to start chiller! Call local power company for assistance.
Incoming power voltage to chiller modules is within rated unit voltage range?
CHECK PRESSURE DROP ACROSS COOLER.
Fluid entering cooler: psig (kpa)____________
Fluid leaving cooler: psig (kpa)_______________
(psig difference) x 2.31 = ft of fluid pressure drop =____________
Plot cooler pressure drop on performance data chart (located in Installation Instructions literature) to determine
total gpm (l/s) for fresh water systems. For glycol, contact your Carrier representative.
Total gpm (l/s) =______________ Unit's rated min gpm (l/s) =___________________
Job's specified gpm (l/s) (if available): ____________________
NOTE: If unit has low fluid flow, find source of problem: check fluid piping, in-line fluid strainer, shut-off valves,
chilled water pump rotation, etc.
VISUALLY CHECK MAIN BASE BOARD FOR THE FOLLOWING:
Inspect all thermistors and transducers for possible crossed wires. Check to be sure all well-type thermistors are
fully inserted into their respective wells.
TO START THE CHILLER:
Turn the emergency on/off switch (SW2) to on position.
Turn the enable/off/remote control switch (SW1) to the enable position.
If equipped with the optional scrolling marquee, leave the enable/off/remote control switch (SW1) in the off
position.
NOTE: Use escape key to go up one level in the structure.
Use arrow/escape keys to illuminate run status led. Press ENTER key until 'VERS' is displayed. Press ENTER key.
Record information.
Record Software Versions
MODE — RUN STATUS
VERS
(Press ENTER and ESCAPE simultaneously to obtain software versions)
average voltage
MBB
EXV
EMM
AUX1
MARQ
NAVI
SOFTWARE VERSION NUMBERS
CESR131482-xx-xx
CESR131172-xx-xx
CESR131174-xx-xx
CESR131333-xx-xx
CESR131171-xx-xx
CESR130227-xx-xx
CL-3
 YES  NO