3-2
Form No. S-2110 08/03
Printed in U.S.A
.
SECTION 3 maintenance
3.3.2 Cabinet Exterior Removal
Side and rear panels of all cabinets in which kettles are
mounted are easily removed without the use of tools.
Each panel is grasped at the bottom edge and pulled out
sharply to release it from the panel mounting brackets
Shown in Figure 4-17 (12).
Replacement is completed by pushing panel up under
cabinet top and pressing in at the bottom until panel
mounting brackets are engaged. Doors may be removed
to improve access to cabinet interior for repairs as shown
In Figure 4-18.
The two flat head screws (10) and nuts (12) holding
cabinet hinge (11) are removed and the door lifted out.
When doors are remounted the final tightened position of
hinge (11) determines the alignment of the door and must
be set with care.
3.3.3 5 Gallon Trunnion Mounted Kettle
Disassembly
Trunnion mounted kettles may be removed from the
cabinet top for replacement of packing and seals which
may become worn through use. The kettle mounting is
shown in Figure 4-2 and is disassembled as follows:
1. Disconnect both steam inlet and condensate return
plumbing connected to the pedestal inside the cabinet
base.
2. Remove the three 3/8" bolts (4) and lock-washers (3)
which fasten the kettle mount to the cabinet top. The
kettle and mount may now be lifted from the cabinet.
3. Remove the four Allen Head set screws under one
pedestal leg.
NOTE:
It is not necessary to remove both pedestal
legs. All replaceable parts are exposed by removing
one leg.
4. Disassemble .packing components (1) by pulling free
leg from kettle. Replace worn parts as required.
CAUTION:
Packing rings on both sides of the kettle
mount must be replaced each time mount is
disassembled to assure a leakproof seal.
5. Reassemble in reverse order.
3.3.4 Draw-Off Valve Repair
An exploded view of the draw-off valve is shown in Figure
4-14. All parts are replaceable.
3.3.4.1 Common Leak Repairs:
To repair a valve leak,
the source must first be determined. Leaks from around
the valve stem are corrected by replacing the rubber "0"
ring (5) .Dripping from the valve outlet which occurs with
the valve tightly closed indicates faulty seating of the
valve disc (part of 6) against the valve seat. Dripping is
often
corrected by cleaning residue from disc and seat using
very fine emery.
3.3.4.2 Valve Seat Lapping:
Should either the disc (part of
6) , or seat be found damaged it is necessaryb to either
replace the entire valve or perform the lapping procedure
as follows:
1. Disassemble the valve and clean both the disc and the
valve seat.
2. Attach the handle (2) to the stem with the valve bonnet
(4) removed.
3. Apply a good grade of fine lapping compound to the
disc and insert it into the valve to make light contact
against the seat.
4. Rotate the stem disc against the seat by turning the
handle, allowing the stem to wobble in the space the
bonnet would normally occupy. Continue with light
pressure until compound dries.
5. Reassemble and test for leaks with valve closed. If
dripping occurs repeat the lapping procedure as many
times as required to obtain a watertight seal.
3.3.5 Tilting Mechanism Repair
Tilting kettles are equipped with tilting mechanisms
shown in Figure 4-7 for 25- and 40- gallon kettles and
Figure 4-9 for 60-gallon kettles. Though both .utilize the
same screw assembly (2) , only Figure 4-7 includes
brake disassembly detail and serves as the reference
view for tilting mechan- ism repairs which follow.
3.3.5.1 Saginaw Screw Assembly Removal:
The
assembly is removed with the kettle in the lowered
