American Dryer Corp. Phase 7 / OPL ensor Activated Fire Extinguishing System D120 - Manual (Page 19)

113375 - 6 Telephone 01422 822282 19
!
!
!
Important
The dryer produces combustible lint and must be
exhausted to the outdoors. Every 6 months,
inspect the exhaust ducting and remove any lint build up.
Clean lint from lint drawer/screen every third or fourth load.
Note
The frequency of cleaning the lint screens can best
be determined from experience at each location.
Weekly
Clean lint accumulation from the lint chamber, thermostat, and
microprocessor temperature sensor (sensor bracket) area.
Warning
To avoid hazard of electrical shock, discontinue
electrical power supply to the dryer.
Steam Dryers
Clean the steam coil fins. Compressed air and a vacuum
cleaner with brush attachment are suggested.
Note
When cleaning steam coil fins, be careful not to
bend the fins. If fins are bent, straighten by using
a fin comb, which is available from local air-conditioning
supply houses.
90 Days
Remove lint from around tumbler, drive motors, and
surrounding areas. Remove lint from the gas valve burner
area with a dusting brush or vacuum cleaner attachment.
Remove lint accumulation from inside the control box and
at rear area behind the control box.
6 Months
Inspect and remove lint accumulation in customer furnished
exhaust ductwork system and from dryer’s internal exhaust
ducting.
Note
The accumulation of lint in the exhaust ductwork
can create a potential fire hazard.
Do not obstruct the flow of combustion and ventilation air.
Check customer furnished back draft dampers in the
exhaust ductwork. Inspect and remove any lint
accumulation, which can cause the damper to bind or
stick.
A back draft damper that is sticking partially closed can
result in slow drying and shut down of the heat circuit
safety switches or thermostats.
When cleaning the dryer cabinet(s), avoid using harsh
abrasives. A product intended for the cleaning of
appliances is recommended.
Check all V-belts for tightness and wear. Retighten, realign,
or replace V-belt if required.
Note
Replace in matched sets (both belts).
!
!
!
Adjustments
7 Days After Installation
and Every 6 Months Thereafter
Inspect bolts, nuts, screws, (bearing setscrews), grounding
connections, and nonpermanent gas connections (i.e.,
unions, shutoff valves, and orifices). Motor and drive belts
should be examined. Cracked or seriously frayed belts
should be replaced. Tighten loose V-belts when necessary.
Complete operational check of controls and valves.
Complete operational check of all safety devices (i.e., door
switch, lint drawer switch, sail switch, burner and hi-limit
thermostat).
Lubrication
The drive shaft bearings and idler shaft bearings should be
lubricated every 3 months. Use a #2 grease or its equivalent.
Lubrication is necessary.
The motor bearings and under normal/most conditions the
tumbler bearing are permanently lubricated. It is physically
possible to relubricate the tumbler bearing if you choose to
do so even though this practice may not be necessary. Use
Industrial Chevron ball or roller bearing SRI grease NLGI2
or its equivalent, which has a broad operating temperature
range of -22° F (-30° C) to 350° F (177° C).
Manual Reset
Burner Hi-Limit Instructions __________
Phase 7
This dryer was manufactured with a manual reset burner
hi-limit thermostat, which is monitored by the Phase 7
computer. If the burner hi-limit is open prior to the start of
the drying cycle, the dryer will start momentarily and then
shut down, the Phase 7 computer will display “BURNER
HIGH LIMIT FAULT” with an audio indication.
If the burner hi-limit opens during a drying cycle, the Phase
7 computer will also display the same error code described
above, along with an audio indication. If the drum
temperature is above 100° F (38° C), the dryer will continue
to run with no heat for 3 minutes or until the drum temperature
has dropped below 100° F (38° C). The CLEAR/STOP button
on the Phase 7 keypad must be pressed to clear the error
condition. The open burner hi-limit must be reset “manually”
prior to the start of the next cycle.
Dual Timer
This dryer was manufactured with a manual reset burner
hi-limit thermostat. If the burner hi-limit is open prior to the
start of the drying cycle, or during the cycle, the dryer will
not recognize the open state of the burner hi-limit and will
start or continue through the drying cycle with no heat.
Manual reset hi-limit must be reset manually.
This hi-temperature condition may be caused due to a
restricted exhaust, poor airflow, or improper burner operation.
The location of the burner hi-limit is on the right side of the
burner box, looking at the burner from the back of the dryer.
Warning
Discontinue power to dryer before attempting to
reset hi-limit.
!