33
MAINTENANCE
1.
ANNUAL MAINTENANCE OF MENDOTA UNITS IS REQUIRED
. The following procedures must be
performed each year by a Mendota approved service person. NOTE: Any adjustments to burner, pilot or logs
must be done by a qualified Mendota service person.
A. Clean all lint and dust build-up around the control. Inspect the condition
of any wiring under the burner for melting or damage.
B. Remove logs & coals and clean away any foreign matter (lint, carbon,
etc.) on the burner and logs. Be sure the burner ports are "open". Clean
the pilot and under side of the logs for any carbon deposits. NOTE: Logs
should be visually checked for carbon "build-up:. If carbon deposits are
visible on logs, unit should be turned off and Mendota service person con-
tacted.
C. Make sure hot air outlet grills are free from lint and other obstructions. Never block
or obstruct grill openings. Check condition of gaskets, gaskets must be tight, replace if necessary.
D. Check that chimney flue and outlet are open and free of blockage.
E. Before re-installing glass, have qualified service person check the operation of the pilot with a millivolt
meter and cycle the burner per LIGHTING INSTRUCTIONS (see Pg. 18).
2.
COMBUSTION SYSTEM MILLIVOLT READING
:
Millivolt readings must be taken by a qualified installer at the time of installation and after any interruption in
burner operation. These readings will establish proper thermopile Millivolt generation and assure trouble-free
burner operation. Readings must be taken with:
a.] Pilot ONLY operating.
b.] Main Burner
operating.
A.
PILOT ONLY OPERATING - Thermostat
"OFF" - Minimum Millivolts 325
Using a Millivolt Meter a millivolt reading should be taken by attaching Meter leads to terminals #1 and
#2 on the main gas valve. The Meter must read a minimum of 325 millivolts with the Pilot Light
operating, Thermostat turned "OFF" and Main Burner "OFF". To increase or decrease millivolts, (and
pilot flame) adjust pilot screw on control. (See below)
B.
MAIN BURNER OPERATING - Rocker
Switch "ON" - Minimum Millivolts 100.
Using a Millivolt Meter, a millivolt reading should be taken by attaching Meter leads to terminals #2 and
#3 on the millivolt panel on the main gas valve. The Meter must read a minimum of 100 millivolts with
the Gas Cock Dial turned "ON", Rocker Switch “ON” and Main Burner operating.
CHECK
TEST
TO TEST
CONNECT
METER
LEADS TO
TERMINALS
THERMOSTAT
CONTACTS
METER
READING
SHOULD BE
A
COMPLETE
SYSTEM
2 & 3
CLOSED 100MV
OR
MORE
B
THERMO-
PILE
OUTPUT
1 & 2
OPEN GREATER
THAN
325 MV
C
SYSTEM
RESISTANCE
1 & 3
CLOSED LESS
THAN
2.8 Ohms
D
AUTO/
PILOT
DROPOUT
1 & 2
OPEN BETWEEN
120-30 MV
3.
THE VIEWING GLASS SHOULD BE CLEANED PERIODICALLY.
Exterior glass may be cleaned with
cleaner as desired. Interior glass - use KEL KEM "Polish Plus", part # 65-06-00455.
WARNING: NEVER CLEAN GLASS WHEN UNIT IS HOT. DO NOT USE ABRASIVE CLEANERS. BREAKAGE AND
SCRATCHES MAY RESULT.
FIGURE 16
Figure 17: Millivolt
FIGURE 19: Millivolt Readings
f i r e - p a r t s . c o m
Summary of Contents for SEABROOK D-40
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Page 37: ...36 Figure 19 fire parts com...
Page 41: ...40 NOTES fire parts com...
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