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APPENDIX G — OPTIONAL GREENSPEED/LOW AMBIENT CONTROL (cont)
Use the following procedure to clean the heat sink on ASC320
VFDs:
1. Turn off and lock out unit power.
2. Insert a small straight blade screwdriver into the slot and
press in to release the top cover as shown in Fig. Y.
3. Blow clean compressed air (not humid) from top of
ASC320 while simultaneously using a vacuum cleaner at
the base to trap the dust.
4. Replace the top cover.
5. Restore power.
Fig. W — Remove ACH550 VFD Front Cover
Fig. X — Remove Top Cover on ACH550 VFD
Fig. Y — Remove Top Cover on ASC320 VFD
Captive
Screw
3
3
2
Summary of Contents for WEATHERMAKER 48A2020
Page 112: ...112 Fig 20 Typical Main Control Box Wiring Schematic 48 50A Units ...
Page 113: ...113 Fig 21 Typical Auxiliary Control Box Wiring Schematic ...
Page 114: ...114 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown ...
Page 115: ...115 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown TO NEXT PAGE ...
Page 116: ...116 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont ...
Page 117: ...117 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown ...
Page 118: ...118 Fig 25 Typical Controls Option Wiring Schematic SW1 SW2 OR DEHUMIDIFY SWITCH ...
Page 119: ...119 Fig 26 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown ...
Page 120: ...120 Fig 27 Typical Power Schematic of Greenspeed Low Ambient Option 48 50A 060 Unit Shown ...
Page 121: ...121 Fig 28 Typical Small Chassis Component Location Size 020 035 Units ...
Page 122: ...122 Fig 29 Typical Large Chassis Component Locations Size 040 060 Units ...
Page 185: ...185 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...