Walmart RFPT-DX

• Walmart Store #, Location

• Walmart Store #, Location

• Rack

• Store Size

• System Type

• Prepared by

• Conducted on

  Date

RFPT

• Have you called Wal-mart control to make them aware of your visit?

  Pass

  Fail

• Call them.

Suction

• Suction Groups

Suction Group

• Rack suction pressure setpoint (psig)

• Suction pressure deadband

• Is the suction temperature stable?

  Pass

  Fail

• Piping Deviation

• Is the suction pressure stable?

  Pass

  Fail

• Piping Deviation

• Does the high and low suction suction alarm have a 15 min delay?

  Pass

  Fail

• Control Deviation

• Temporarily reduce suction alarm delay from 15 minutes to 15 seconds.

• High suction pressure alarm (psig)

• Override the suction pressure above the high suction pressure alarm setpoint

• Does high suction alarm generate in the controller?

  Pass

  Fail

• Control Deviation

• Low suction pressure alarm (psig)

• Override the suction pressure below the low suction pressure alarm setpoint

• Does low suction alarm generate in the controller?

  Pass

  Fail

• Control Deviation

• Reset suction alarm delay back to 15 minutes.

Compressor information

• Compressors

Compressor

• Model Number

• Does this compressor match the submittal?

  Pass

  Fail

• Equipment Deviation

• Does the compressor have an unloader?

  Yes

  No

  N/A

• What type of unloader?

  Digital

  50% unloader

  33% unloaded

• Does the compressor toggle switch work?

  Pass

  Fail

• Equipment Deviation

• Override the compressor and/or its unloader off through the BAS controller

• Does the compressor/unloader turn off?

  Pass

  Fail

• Control Deviation

• Compressor Oil reservoir level

  High (above 75%)

  Low (below 25%)

  Pass

• Oil reservoir level

  High (above 75%)

  Low (below 25%)

  Pass

• Piping Deviation

Compressor staging

• Suction Groups

Suction Group

• Compressor staging and capacities

Stage

• Which compressors are called for in this stage? (Novar Only)

  Select 1 1U 2 2U 3 3U 4 4U 5 5U 6 6U 7 7U 8 8U

  • 1
  • 1U
  • 2
  • 2U
  • 3
  • 3U
  • 4
  • 4U
  • 5
  • 5U
  • 6
  • 6U
  • 7
  • 7U
  • 8
  • 8U

• Capacity (MBH)

• Compressor staging up delay.

• Compressor staging down delay.

• Override the suction pressure above the suction target deadband.

• Do compressors stage completely up?

  Pass

  Fail

• Control Deviation

• Override the suction pressure below the suction target deadband.

• Do compressors stage completely down?

  Pass

  Fail

• Control Deviation

Float circuits

• Suction Groups

Suction Group

• Who is the BAS provider?

  CPC

  Novar

  Danfoss

• Is there a float circuit and if so, does it match your plans?

  Yes the float circuit matches my plans

  No there is no float

  Yes there is float, but the float circuit does not match my plan

• Override float circuit temperature input below its target deadband.

• Does the suction target float up?

  Yes

  No

• Control Deviation

• If system has already floated up, override float circuit temperature input above its target temperature.

• Does the suction target float down?

  Yes

  No

• Control Deviation

• Are there 2 float circuits and if so, do they match the plans?

  Yes the float circuit matches my plans

  No there is no float

  Yes there is float, but the float circuit does not match my plan

• Control Deviation

• Control Deviation

Subcooler

• What is the target subcooled liquid temperature?

  50

  75

• Does Subcooler liquid temp appear stable around 50degF?

  Pass

  Fail

• Piping Deviation

• Is Subcooler stage 1 cut in/cut out set to 55/45?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Is Subcooler stage 2 cut in/cut out set to 58/48?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Is Subcooler stage 3 cut in/cut out set to 60/50?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Is Subcooler LPR cut in/cut out set to 55/60?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Override the subcooled liquid temp below 45 degF.

• Do all subcooler supply solenoid valves de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 56 degF.

• Does subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 59 degF.

• Does subcooler stage 1 supply solenoid valve de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 61 degF.

• Does subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid de-energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 54 degF.

• Is subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Is subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 49 degF.

• Does subcooler stage 1 supply solenoid valve de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 47degF.

• Does subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve de-energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp below 45 degF.

• Do all subcooler supply solenoid valves de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

• Does Subcooler liquid temp appear stable around 75degF?

  Pass

  Fail

• Piping Deviation

• Is Subcooler stage 1 cut in/cut out set to 80/70degF?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Is Subcooler stage 2 cut in/cut out set to 83/73degF?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Is Subcooler stage 3 cut in/cut out set to 85/75 degF

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Is Subcooler LPR cut in/cut out set to 80/85degF?

  Pass

  Fail

• Control Deviation

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Override the subcooled liquid temp below 70 degF.

• Do all subcooler supply solenoid valves de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 81degF.

• Does subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 84degF.

• Does subcooler stage 1 supply solenoid valve de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 86degF.

• Does subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid de-energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 79degF.

• Is subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Is subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 74degF.

• Does subcooler stage 1 supply solenoid valve de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp to 72degF.

• Does subcooler stage 1 supply solenoid valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does subcooler stage 2 supply solenoid valve de-energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp below 70degF

• Do all subcooler supply solenoid valves de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

• Override the subcooled liquid temp below 70degF.

• Do all subcooler supply solenoid valves de-energize/close?

  Pass

  Fail

• Piping Deviation

• Does the LPR bypass solenoid energize/close?

  Pass

  Fail

• Piping Deviation

Surge Valve/Receiver Bypass

• What is the surge valve/receiver bypass cut in?

• What is the surge valve/receiver bypass cut out?

• What is the time delay?

  Select On delay Off delay Minimum on time Minimum off time Cut in Cut out None

  • On delay
  • Off delay
  • Minimum on time
  • Minimum off time
  • Cut in
  • Cut out
  • None

• What is the duration?

  Select 0 min 1 min 2 min 3 min 4 min 5 min

  • 0 min
  • 1 min
  • 2 min
  • 3 min
  • 4 min
  • 5 min

• Override the drop leg temperature to below the cut in setpoint.

• Does the surge valve/receiver bypass solenoid energize/open?

  Pass

  Fail

• Piping Deviation

• Override the drop leg temperature to above the cut out setpoint.

• Does the surge valve/receiver bypass solenoid de-energize/close?

  Pass

  Fail

• Piping Deviation

Discharge

• Is VFD bypass set to enable at 275 psig?

  Pass

  Fail

• Control Deviation

• Is VFD bypass set to disable at 325 psig?

  Pass

  Fail

• Control Deviation

• Override discharge pressure to 326 psig.

• Does the VFD go into bypass (all fans should be at full speed)?

  Pass

  Fail

• Control Deviation

• Does the controller generate an alert indicating VFD bypass?

  Pass

  Fail

• Control Deviation

• Override discharge pressure below 275 psig.

• Does VFD bypass discontinue?

  Pass

  Fail

• Control Deviation

• Is high discharge lockout set to 375 psig?

  Yes

  No

• Override discharge pressure above 375 psig.

• Do compressors shutdown and condenser go into VFD bypass?

  Pass

  Fail

• Control Deviation

• Does the controller generate an alarm indicating high discharge lockout?

  Pass

  Fail

• Control Deviation

Current Conditions

• Current outside air temperature on the controller

• Current outside air temperature on the VFD

• Current drop leg temperature on the controller

• Current saturated condensing temperature (drop leg) on the VFD

• Refrigerant type

Condenser

• What type of condenser is in operation?

  Evap

  Air Cooled

• Model Number

• Is the condenser clean?

  Pass

  Fail

• Piping Deviation

• Verify the condenser fans are rotating the proper direction?

  Pass

  Fail

• Piping Deviation

• Is it an Emerson or Danfoss VFD?

  Emerson

  Danfoss

• Pr 61 - Pressure feedback pressure

• Pr 62 - Extrapolated temperature based off feedback pressure?

• Pr 63 - Ambient temperature sensor feedback?

• Is Pr 66 in pressure or TD control mode?

  Pressure

  TD

• Piping Deviation

• Is Pr 67, condenser TD, set to 150 or 15 degF?

  Pass

  Fail

• Piping Deviation

• Is Pr 68, the minimum reference temperature, set to 80 degF?

  Pass

  Fail

• Piping Deviation

• Is Pr 18.27, maximum reference temperature, set to 2250?

  Pass

  Fail

• Piping Deviation

• Is the condenser TD set 19 degF?

  Pass

  Fail

• Piping Deviation

• Is the max TD reference 114degF?

  Pass

  Fail

• Piping Deviation

• Is the min TD reference 77degF?

  Pass

  Fail

• Piping Deviation

• When condenser TD is raised, do the fans react by slowing down?

  Pass

  Fail

• Piping Deviation

• When condenser TD is lowered, do the fans ramp up to compensate?

  Pass

  Fail

• Piping Deviation

• Pump cut in

• Pump cut out

• Does the pump cut in at its set point?

  Pass

  Fail

• Does the pump cut out at its set point?

  Pass

  Fail

• Model Number

• Is the condenser clean?

  Pass

  Fail

• Piping Deviation

• Is it an Emerson or Danfoss VFD?

  Emerson

  Danfoss

• Pr 61 - Pressure feedback pressure

• Pr 62 - Extrapolated temperature based off feedback pressure?

• Pr 63 - Ambient temperature sensor feedback?

• Is Pr 66 in pressure or TD control mode?

  Pressure

  TD

• Piping Deviation

• Is Pr 67, condenser TD, set to 150 or 15 degF?

  Pass

  Fail

• Piping Deviation

• Is Pr 68, the minimum reference temperature, set to 80 degF?

  Pass

  Fail

• Piping Deviation

• Is Pr 18.27, maximum reference temperature, set to 2250?

  Pass

  Fail

• Piping Deviation

• Is the condenser TD set 19 degF?

  Pass

  Fail

• Piping Deviation

• Is the max TD reference 114degF?

  Pass

  Fail

• Piping Deviation

• Is the min TD reference 77degF?

  Pass

  Fail

• Piping Deviation

• When condenser TD is raised, do the fans react by slowing down?

  Pass

  Fail

• Piping Deviation

• When condenser TD is lowered, do the fans ramp up to compensate?

  Pass

  Fail

• Piping Deviation

Split condenser

• Is it an Emerson or Danfoss VFD?

  Emerson

  Danfoss

• Is the split condenser cut in/out 138/214?

  Pass

  Fail

• Piping Deviation

• Which transducer is on the drop leg?

  1-5vdc @ 0-400 psi

  1-5vdc @ 0-500 psi

  .5-4.5vdc @ 0-500 psi

• Is comparator value 0 (split condenser cut in) 24?

  Pass

  Fail

• Piping Deviation

• Is comparator value 1 (split condenser cut in) 30.5?

  Pass

  Fail

• Piping Deviation

• Is comparator value 0 (split condenser cut in) 21.2?

  Pass

  Fail

• Piping Deviation

• Is comparator value 1 (split condenser cut in) 26.4?

  Pass

  Fail

• Piping Deviation

• Is comparator value 0 (split condenser cut in) 16.2?

  Pass

  Fail

• Piping Deviation

• Is comparator value 1 (split condenser cut in) 21.4?

  Pass

  Fail

• Piping Deviation

• Verify that the VFD on delay is set to 300 seconds or 5 minutes?

  Pass

  Fail

• Piping Deviation

• Temporarily override the VFD delay to 5 seconds

• If in full condensing mode, override the cut in comparator value (Danfoss) or cut in pressure (Emerson),above the current saturated condensing temperature.
  If in split condensing mode, override the cut out comparator value (Danfoss) or cut out pressure (Emerson), below the current saturated condensing temperature.

• By adjusting the given condenser parameters is it possible to force the condenser into split mode?

  Pass

  Fail

• Does pump out valve energize/open?

  Pass

  Fail

• Piping Deviation

• Does 50% split valve energize/open?

  Pass

  Fail

• Piping Deviation

• Do fans on seasonal side shut off?

  Pass

  Fail

• Piping Deviation

• Is the holdback valve solenoid de-energized during 50% split condensing mode?

  Yes

  No

  N/A

• Piping Deviation

• When rack is in split condenser mode and all compressors are turned off, does the pump out valve de-energize, and do both sub cooler supply solenoid valves de-energize/close?

  Pass

  Fail

• Piping Deviation

• Is the holdback valve solenoid energized during full condensing mode?

  Yes

  No

  N/A

• Piping Deviation