Radial Gap, Overlap And Wheel Alignment (Continued); Field Coating Touch-Up Procedure For Scratched Areas; Electrical Connections - Greenheck APD Installation, Operation And Maintenance Manual

Radial Gap, Overlap and Wheel
Alignment (continued)
Wheel Back to Inlet Cone
Unit
Size
Overlap
in.
315 0.12
355 0.14
400 0.16
450 0.18
500 0.20
560 0.22
630 0.25
Radial Gap (model PLG) is adjusted by loosening the
inlet cone bolts and centering the cone/ring on the
wheel. If additional adjustment is required to maintain
a constant radial gap, loosening the bearing bolts
and centering the wheel is acceptable as a secondary
option.
Radial
Gap
PLG
Overlap, or offset, (model APD, APM, APH, HPA) is
adjusted by loosening the wheel hub from the shaft and
moving the wheel to the desired position along the motor
shaft. The transition between the inlet cone and wheel
should be as shown; there is a smooth feel to the profile
when moving from one component to the other.
Wheel Back Wheel Back
to Inlet Cone
to Inlet Cone
Overlap
Overlap
APD
10 Housed Plenum Array, Plug and Plenum
APD
Overall Assembly
mm in. mm
3.15 7.26 184
3.55 8.17 208
4.0 9.01 231
4.5 10.15 259
5.0 11.32 288
5.6 12.8 325
6.3 14.49 368
Overlap
A
Wheel
Inlet
Cone
Wheel
Offset
Inlet
Cone
APM, APH, HPA
Field Coating Touch-Up Procedure
for Scratched Areas
Standard coating is Greenheck's Concrete Grey,
RAL 7023. The procedure below details the correct
method for repairing minor scratches in the coating.
TOUCH-UP PAINT REPAIR KIT CONTENTS
• One pint of Kem Kromik primer
- including a technical data sheet
• One pint of industrial enamel
- including a technical data sheet
• Four disposable foam brushes
• One sheet sandpaper
• Repair procedure details
1. Scuff affected area to be repaired using medium
sandpaper (provided) or medium scotch brite pad.
Feather the edges.
2. Clean affected area to be touched up using an
alkaline based cleaner and rinse.
3. Apply Kem Kromik primer using 1 inch foam brush
(provided). Follow technical data sheet instructions.
4. Allow primer to dry a minimum of 2-1/2 hours before
top coating.
5. Apply topcoat with industrial enamel using 1 inch
foam brush (provided). Follow technical data sheets
instructions. Allow painted units to air-dry and cure
before putting into service. See enclosed Technical
Data sheets for detailed drying and cure schedules
at different temperatures.
To order additional coating repair kits please reference
Greenheck's part number HAZ2597, PNT FIELD REPAIR
KIT, RAL 7023 CONCRETE GREY kit. Please contact
factory with your fan's serial number for colors other
than our standard.

Electrical Connections

Before electrical connections are made, the supply
voltage, phase and ampere capacity must be checked
for compatibility with the fan motor. In addition, the
supply wiring must be properly fused and conform to
local and national electrical codes. If the unit is supplied
with a safety disconnect switch, ensure proper wiring
to the fan motor. Be sure the disconnect is switched to
the "OFF" position before connecting supply wires. If
no disconnect is supplied, ensure the supply wire is not
live before connection. Supply wires are then connected
to the optional safety disconnect switch (if supplied) or
motor.