Market Forge MT-25 Service Manual

MT 25/40/60 GALLON SERIES

MODULAR BASE DIRECT STEAM TILTING KETTLES

PARTS AND SERVICE MANUAL

EFFECTIVE OCTOBER 11, 2016

The Company reserves the right to make substitution in the event that items specied are not available.

ERRORS: Descriptive and/or typographic errors are subject to correction.

44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone: [phone] Fax: [phone]

Superseding All Previous Parts Lists.

MARKET FORGE INDUSTRIES

www.mi.com

P/N 14-0324 Rev B

TABLE OF CONTENTS

ADJUSTMENTS .......................................................................3

ILLUSTRATED PARTS LIST

TILTING MECHANISM ..................................................................4

KETTLE CABINET BASE ...............................................................5

DRAIN ASSEMBLY .....................................................................8

PISTON ASSEMBLY ...................................................................9

VALVE AND FAUCET ................................................................. 10

CRANK SHAFT .......................................................................11

VALVE ASSEMBLY ................................................................... 12

KETTLE JACKET ASSEMBLY ......................................................... 13

STEAM SUPPLY VALVE .............................................................. 14

SWING DRAIN ....................................................................... 14

DRAW OFF VALVE ................................................................... 15

STEAM TRAP ....................................................................... 16

OCTOBER 11, 2016 2 MT25, MT40 & MT60 DIRECT STEAM KETTLES

ADJUSTMENTS

GENERAL INSPECTION & CLEANING

The screw assembly should run smoothly throughout
the entire stroke. If operation is not uniform, remove the
screw assembly and proceed as follows:

1. Inspect screw shaft for accumulation of foreign matter
in the ball grooves.

2. Using cleaning uid or solvent, remove dirt from ball
grooves. Be sure to ush the ball nut assembly thor­oughly.

3. Cycle the ball nut along the screw shaft several times.
Then, wipe with a dry, lint less cloth and lubricate im­mediately.

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 lift up and
out towards you to release it from the panel mounting
brackets

Replacement is completed by pushing panel up under
cabinet top allow hook to fall in place at the bottom until
panel mounting brackets are engaged. Door may be re­moved to improve access to cabinet interior for repairs.

The two at head screws and nuts holding cabinet hinge

are removed and the door lifted out. When doors are re-

mounted the nal tightened position of hinge determines

the alignment of the door and must be set with care.

DRAW-OFF VALVE – VALVE SEAT LAPPING

Should either the disc, or seat be found damaged it is
necessary 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 to the stem with the valve bonnet
removed.

3. Apply a good grade of ne 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.

DRAW-OFF VALVE – COMMON LEAK REPAIRS

To repair a valve leak, the source must rst be deter­mined. Leaks from around the valve stem are corrected
by replacing the rubber “0” ring .Dripping from the valve
outlet which occurs with the valve tightly closed indicates
faulty seating of the valve disc against the valve seat.
Dripping is often corrected by cleaning residue from disc

and seat using very ne emery.

REPAIR & REPLACEMENT

In the event that the kettle fails to operate correctly, the difculty
should rst be isolated to either the kettle itself or the steam

supply which heats the kettle. While mechanical problems are
obvious faults of the kettle, any deciencies in volume and pres­sure of steam should be traced to the steam generator and the
cause determined.

OCTOBER 11, 2016 3 MT25, MT40 & MT60 DIRECT STEAM KETTLES

,

7

7

3

5

2

4

6

1

8

9

10

12

11

13

Power Tilt
(optional)

TILTING MECHANISM

Manual Tilt

ITEM PART NO. DESCRIPTION

1 91-9335 POWER TILT MOTOR WELD ASSEMBLY

2 91-9336 MOTOR MOUNTING PLATE

3 98-1726 POWER LIFT FOOT BRACKET

4 91-9353 POWER TILT NYLON STRIP

5 98-0555 LIFTING LEVER ARM

6 91-9387 LEVER ARM

7 91-9324 LIFT SCREW ASSEMBLY

8 98-4131 CONDENSER HOSE

9 90-3490 HINGE BLOCK

10 08-5217 VALVE RETAINER COLLAR

11 10-5242 VALV E

12 98-4128 FAUCET HOSE

13 98-3676 MOTOR

OCTOBER 11, 2016 4 MT25, MT40 & MT60 DIRECT STEAM KETTLES

KETTLE CABINET BASE

2

3

4 5 7

6

ALL MODELS

1

ITEM PART NO. DESCRIPTION

1 08-5894 MARKET FORGE NAMEPLATE LOGO

2 91-5795 HANDLE, FRONT

3 98-3992 PANEL, FRONT ASSEMBLY, 24”

3 98-3993 PANEL, FRONT ASSEMBLY, 36”

3 98-3986/98-1621 PANEL, FRONT ASSEMBLY, 48” (60-Gallon)

4 10-0631 LEG, 6”

*4 08-5211 LEG, 10”

*4 08-5206 LEG, 8”

5 98-3994 PANEL, SIDE ASSEMBLY

6 91-9103 HAND CRANK PANEL

7 08-5208 LEG, FLANGED 6”

*8 98-3996 PANEL, REAR ASSEMBLY, 36”

*8 98-3995 PANEL, REAR ASSEMBLY, 48” (MT-60) (NEED QTY. OF 2)

*9 10-0326 CASTER, 5” (OPTIONAL)

* NOT SHOWN.

OCTOBER 11, 2016 5 MT25, MT40 & MT60 DIRECT STEAM KETTLES