Mitsubishi Electronics PCH24GK OC277-56, Removing the fan motor, Removing the sirocco fan

Page 56

OPERATING PROCEDURE

PHOTOS&ILLUSTRATIONS

3. Removing the fan motor

Photo 2

(1)Remove the intake grille.

(2)Disconnect the fan motor connector.

(3)

Remove the screw for removing the motor support at both

Screws

Motor

set screw

 

 

 

 

left and right side.

 

 

 

(4)

Loosen the set screws at the fan motor side of the con-

 

 

 

 

necting joint.

 

 

 

(5)

Slide the fan motor to the left side and pull it out.

 

 

 

Motor support

connecting joint

4. Removing the sirocco fan

Photo 3

 

 

(1)

Remove the air intake grille.

 

 

 

 

 

 

 

 

(2)

Remove 1 beam.

 

 

 

 

 

 

(3)

Remove the lower casing while pressing the stoppers at

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Casing

 

 

 

 

Set screws

Catch

 

 

upper side of the casing.

 

Motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(4)Loosen the set screws at the connecting joint.

(5)Remove the sirocco fan and shaft together by sliding the shaft to the left.

(Note)

Make sure that the upper side casing is snapped to the fan plate securely with catch.

Connecting joint

Shaft

BearingScrews

Sirocco fan

5. Removing the side panel

Figure 3

(1)

Remove the air intake grille.

 

(2)

Remove the screws from the side panel, and remove the

 

 

side panel by sliding the panel to the front.

Side panel

 

 

Slide the panel

 

 

to the front

Screws

OC277-56

Image 56
Contents Contents OC277-1Features OC277-2Improving Efficiency of Piping Work Easy Maintenance no Maintenance Necessary for 2500 HoursOC277-3 Part Names and Functions OC277-4Remote controller operation buttons OC277-5Remote controller display OC277-6Models PCH24GK, PCH30GK, PCH36GK, PCH42GK SpecificationsOC277-7 Data OC277-8Models PCH24GK, PCH30GK, PCH36GK, PCH42GK Performance Data CFM SHC TPCOC277-9 CFMOC277-10 Performance CurveOC277-11 PCH36GK Cooling Capacity PCH36GK Heating CapacityOC277-12 Condensing Pressure and Suction PressureOC277-13 PCH30GKOC277-14 PCH36GKOC277-15 PCH42GKSHF PCH24GK PCH30GK PCH36GK PCH42GK OC277-16Standard Operation Data OC277-17 Operating RangeOutlet AIR Speed and Coverage Range Additional Refrigerant Charge R22ozOC277-18 Noise Criterion Curves PCH24GKPCH30GK PCH36GK PCH42GKIndoor unit PCH24GK Outlines and DimensionsOC277-19 OC277-20 Indoor unit PCH30/36/42GKRefrigerant System Diagram Remote controllerOC277-21 PCH30GK PCH36GK PCH42GKOC277-22 Wiring DiagramModel PCH24/30/36/42GK Wiring Diagram Main Operation Operation FLOW-CHARTOC277-23 OC277-24 Cooling OperationOC277-25 DRY OperationDRY YESOC277-26 Heating OperationOutline of Microprocessor Control Microprocessor ControlOC277-27 How to operate OC277-28Indoor Unit Control Compressor controlOC277-29 Start conditionCoil frost protection Termination conditionsOC277-30 Auto vane controlSwing Auto ReturnRange a Range B Range C OC277-31Detecting abnormalities in the outdoor unit DRY operation DRY operation time chart How to operateOC277-32 OC277-33 Heat operation time chart OC277-34Heat operation Display in Heat operationOC277-35 Overheat protectionBooster heater control Overheat preventionDefrosting operation Indoor coil temperature abnormality detectionOC277-36 Initial mode How to operate Mode changeTemperature range OC277-37Auto return OC277-38COOL/DRY operation Timer operation Timer functionOC277-39 Test run Before test runBefore emergency operation OC277-40Emergency operation Dip switch functions On remote controller boardOC277-41 On indoor controller boardFan motor max. rotational frequency Service Ref OC277-42PCH24GK PCH30GK PCH36GK PCH42GK SW7 OFF PCH36, 42GKOC277-43 Trouble ShootingRemote Controller Display Abnormality When malfunction occurs during operation For group control using one remote controllerOC277-44 Example Check Unit code addressOC277-45 Wrong Wiring on Site OC277-46Cool HeatOC277-47 Other Troubles and CausesPCH How to check the partsOC277-48 OC277-49 System Control OC277-50Variety of System Control Functions PAC-SA89TA-EGroup Control with a Single Remote Controller How to wireHow to set unit-address OC277-51Control Using TWO Remote Controllers Remote ON-OFF and Individual Remote ControlsHow to set SW17-7 See Figure Remote controller LCD indicationIndividual Control by Grouping the Remote Controllers Basic wiringSwitch function of remote ON-OFF switch OC277-53Multiple Remote Control Display Timer Operation or the Operation by AN External SignalOC277-54 Auto Restart FunctionDisassembly Procedure PCH24GK Operating ProcedureOC277-55 Removing the air intake grilleOC277-56 Removing the fan motorRemoving the sirocco fan Removing the side panelOperating Procedure Photos OC277-57Removing the vane motor Removing the Indoor coil thermistorOC277-58 Removing the drain panRemoving the guide vane Remove the intake grilleRemoving the heat exchanger OC277-59Removing the support heater Structural Part PCH24GK Parts ListOC277-60 OC277-61 OC277-62 Structural Part PCH30GK PCH36GK PCH42GKOC277-63 OC277-64 FAN and Heater Parts PCH24GKOC277-65 FAN and Heater Parts PCH30GK PCH36GK PCH42GKOC277-66 Electrical Parts PCH24GK10 PCH30GK PCH36GK PCH42GKOC277-67 TimerOptional Parts PAC-SC32PTA Weekly Timer Setting Display OC277-68Names and functions SET Back DisplayTimer Adapter Multiple Remote Controller AdapterOC277-69 Refrigerant PipesSpecifications are subject to change without notice