Frymaster UHC-HD - Manual (Page 3)

Clean air exhaust fan and driver board Annual PR50
©McDonald’s Corporation · Planned Maintenance Manual · Revised July 2007
Page 1 of 1
Frymast
er Univ
ersal H
old
ing
Cabi
net (U
HC)
Models
UH
C-
HD
QUALIFIED T
ECH
NICIA
N
S
ONLY
Annual PR
50
Why To maintain proper cooling of electronic components
Time required 2 minutes to prepare 30 minutes to complete
Time of day After close For 24-hour restaurants: during low-volume periods
Hazard icons
Tools and supplies
Tools supplied by
technician
Procedure
QUALIFIED TECHNICIANS ONLY
1 Perform all UHC daily maintenance procedures.
Set the UHC to “CLEAN MODE” and remove all
UHC trays and wire racks. Allow the UHC to cool until
CLEAN is displayed. Perform all daily maintenance
procedures.
Do not attempt to clean a hot UHC.
2 Unplug UHC power cord.
Remove the UHC power cord plug from the wall out-
let.
Failure to unplug the power at the wall outlet could
result in serious injury or death. The power switch on
the UHC does not disconnect all incoming power to the
cabinet.
3 Remove side panels.
Remove the 2 screws in each side panel with a Phillips
screwdriver. Set the screws aside. Remove the side
panels from the UHC.
4 Brush dust from circuit boards.
Use a dust free anti-static brush to gently brush any
dust from the circuit boards on the left side of the
UHC.
5 Access exhaust fan.
Remove the 8 screws in the top panel. Use a
5 / 16 -in
socket wrench or nut driver. Place screws in a small
container to avoid misplacing or loss. Remove the top
panel.
If removing the cabinet from its fixed position for dis-
assembling and cleaning, the UHC requires at least 2
people.
6 Clean air exhaust fan blades.
Wipe the blades of each air exhaust fan with a clean,
sanitized towel sprayed with McD APSC solution. Do
not allow the moist towel to touch any electrical con-
nections.
Sanitizer solution, McD APSC
7 Replace top and side panels.
Replace the top panel. Insert and tighten the 8 screws.
Replace the side panels. Insert and tighten the 2 screws
per side.
819‐6712