Market Forge 3500-G Service Manual

COOKER CHECK-OUT

The cooker check-out procedure is as follows:

1. Set both 60 minute timers to the "4 minute" position. Observe that the indicator lights are off and
steam does not enter compartments.

2. Close the cooker compartment doors to be certain that latches are securely engaged. Observe
that indicator lights are on and steam can be heard entering the compartments.

3. Observe the boiler drain line for steam flow to the open floor drain. Correct steam condenser
operation is evidenced by the presence of water flowing from the drain.

4. Cooker operation is correct when, after a short preheat time delay the timer dials begin to move
toward "0". After the delay period plus the "4 minute" initial setting the timer dials will return to the

"0" position, the buzzer will sound and is silenced by turning the dial to the OFF position.

5. The steam cooker/generator start -up and shut-down must be completed a total of three times to
ensure cleanliness and proper operation before the final check-off.

GENERAL

This section contains both preventive and corrective maintenance information. Preventive
maintenance may be performed by maintenance personnel at the establishment in which the
cooker is installed.It is recommended that user personnel never attempt to make repairs or
replacements to the equipment Assistance in service methods or a current directory of
authorized agencies may be obtained from Market Forge Co.

DAILY CLEANING

After each period of daily operation (more frequently as required to maintain cleanliness) the
cooker should be thoroughly cleaned by completing the following steps:

1. Remove all pan supports by lifting up and off mounting studs and remove the drain screen
from the lower left comer of each compartment Wash with warm water and detergent, rinse
and set aside for reassembly.

2. Wash cooking compartment interior using warm water and detergent rinse and dry
thoroughly.

3. Replace pan supports and drain screens, leave doors ajar.

4. Remov e wash and rinse drain trough.

PREVENTIVE MAINTENANCE

A good preventive maintenance program begins with the daily cleaning procedure
described above. Additional preventive maintenance operations are presented in
this section. In establishments which employ full-time maintenance personnel, the
tasks described can be assigned to them. For other installations tasks requiring
mechanical or electrical experience must be performed by an authorized service
agency. The following paragraphs set forth minimum preventive maintenance
procedures which must be completed periodically to assure continued trouble free
operation.

CAUTION

Under no circumstances should hardware (or parts) be replaced with a different size
or type other than as specified in the parts list. The hardware used in the cooker has
been selected or designed specifically for its application and the use of other
hardware may damage the equipment present a safety hazard and will void any

warranty.

DOOR ADJUSTMENT

This unit is equipped with a positive slam action type latch mechanism that is factory
set and permanently secured. In the event of a steam leak between the gasket and
the face of the cooker, the gasket should be adjusted to provide an air tight joint To

reset the gasket proceed as follows:

1. Close the door.

2. Pre-heat cooker compartment This will simulate actual cooking conditions. It is
recommended that this adjustment be made on a heated unit

3. Inspect the door and observe escaping steam.

4. Loosen the four adjustment screws located on the right and left ends of the door.

5. Press door against cooker body by maintaining moderate pressure against the
outer door. This will engage the gasket firmly with the face of the cooker. Tighten

the four adjustment screws -

If, after performing the described adjustment the seal is not tight replace the gasket

Note- Should the latch/striker mechanism become inoperative the component parts are
replaceable.

MAINTENANCE

2

3500 - Control Side Plumbing

SECTION B

-B

NOTES:

SECTION A

-A

ITEM

QTY.

PER

COMP-
1 1 10-2811 STREET ELBOW. 1/2" IPS
2 1 10-5859 VALVE, SOL, 1/2" STM. ( 120 VOLT) 60 Hz

1 10-7340 VALVE, SOL. 1/2" STM. ( 240 VOLT) 60 Hz
3 1 10-4844 EL, UNION, 90 DEGREE, 1/2" IPS. BRASS
4 1 91-3430 CHANNEL
5 2 08-4874 VALVE, PRESSURE RELIEF
6 2 10-3324 BUSHING,REDUCING, 1/2" X 1/4" IPS
7 1 10-3442 TEE, BRASS. 1/2" X 1/2" X 3/4" IPS
8 1 08-4831 ELBOW, 90 DEGREE, B.I., 1" IPS, STREET
9 1 08-4866 NOZZLE, CONDENSER ( NEWER MODELS )

10 1 09-4817 EL, 90 DEGREE, REDUCING, 1/2" X 1/4" IPS.
11 1 08-4821 VALVE, SOL. 1/4" WTR., (120 VOLT) 60 Hz

1 08-4810 VALVE, SOL, 1/4" WTR-, ( 240 VOLT) 50 Hz

12 1 08-4841 STEAM SUPPLY HOSE ( UPPER COMP.)

1 08-4842 STEAM SUPPLY HOSE ( LOWER COMP.)

13 1 08-4867 BUSHING, 1" NPT X 1/4" NPT
14 1 10-8045 TEE, M.I.1" NPT
15 1 08-4407 SPACER, RUBBER
16 1 10-3343 LOCKNUT, 1/2" IPS
17 3 91-6203 GASKET, .859 ID X 1-1/32 OD X 1/8" TK
18 1 91-3240 JET PIPE
19 1 09-4816 NIPPLE, CLOSE, BRASS, 1/8" NPT

20 1 10-8105 COMPARTMENT THERMOSTAT

PART

NUMBER

DESCRIPTION

1. Assemble item 5

2. Assemble item 9