Vertiv Liebert PDX - Maintenance Schedule Details; Fan and Air Filter Maintenance; Control System and Humidifier Maintenance; Electrical and Refrigeration Circuit Maintenance

25
Liebert
®
PDX, EconoPhase Version - UM - 265133 - 29.08.2019
Maintenance schedule
COMPONENT
MAINTENANCE
PERIOD EVERY
3Months
6Months
1Year
FANS
WARNING: do not
reachintothe fan
whilethe fan
wheel is runnin
g
.
Check forsoiling,damage corrosion,and proper xing. X
Checkbearings noise. X
Measurethe current and power consumption. X
Cleaning to preserve thefunction. X
AIRFILTERS
Check forsoiling,damage, corrosion. X
Checkstate olter. X
Clean or replaceifnecessary. X
Carry outcontrolsmorefrequentlyindusty environments. X
NEWAIR FILT ER
(installed)
seeair lter. Cleanorreplace X
CONTROL
SYSTEM
Check forproperand functionally correct installation andsurroundingconditions. X
Checkthe functionofthe LEDs of thedisplay’s controlsystem and thealarms. X
Checkthe connections forelectricaland mechanical function. X
Checkthe functional elements (e.g.operational controls anddisplay devices). X
Checkthe electrical/electronic and pneumatic inputsignals(e.g. sensors, remote
controllers, command variable) forcompliancewithnominal values.
X
Check controlfunction,control signalsand safety chains. X
Adjust control function andcontrol signals. X
HUMIDIFIER
(installed)
SeeEnclosure A, F, G.
SWITCH CABINET
POWERCIRCUITS
WARNING:
electrical
cables and
electrical components
of theair conditioner
are under voltage.
Check thepower supply on allphases. X
Checkthe connections forelectricaland mechanical function. X
Check thepower supplyatall terminals. X
Measurepower consumptionatall connectedconsumers. X
Set, adjust andtighten thefunctional elements(e.g. operationalcontrolsand display
devices).
X
Checksafetyequipment,e.g.thermal switch. X
Replace fuses(every2-3years) X
Checkprotective covers forcompleteness. X
CAUTION:Fluo-
ride refrigerants
increase thegreen-
houseeect and aresub-
ject to restrictions and
norms, accordingtothe
national and European
regulations.
REFRIGERATION
CIRCUIT
Measurethe workingpressures andtemperatures(to be done by arefrigeration
technician).
X
Checkthe powerconsumption,measure head temperatureand checkfor possible
abnormal operatingsounds.
X
Make sure that thereisnofrost building up on theevaporatorand compressor. X
Checkfunctionofall regulating devices(power regulators, valves,etc.). X
Checksafety devicesfor function.Ifthe quantityofthe refrigerantisnot enough, detect the
leakageifany.Then reclaim, void,repairand charge.
X
If thequantityofrefrigerant is notenough, it needstobereclaimed and relledwith
completely newrefrigerant.
Checkoil levelatthe sight glass(wheresight glassisavailable). X
Carry outatest to ceck humidityinsideoil X
Checkcrankcase heater forfunction. X
Check digital modulation-solenoid valve X
ELECTRONIC
EXPANSION VALVE
andSUPERHEATING
CONTROLLER
(installed)
Seeappropriatemanual.
EXTERNAL
CONDENSER/
Seeappropriatemanual.