Market Forge Industries A, A I Parts And Service Manual
Revision 3-1975
MODEL A &
MODEL A I
STEAM COOKERS
Manual & Automatic
PARTS and SERVICE
MANUAL
Market Forge
Everett Ma. 01249 Tel. 387-4100
Facsimile #617-387-4456
5099
TABLE OF CONTENTS
5100
Subject Code No. Page
HOW TO USE THIS MANUAL ................................……………………………………………. 5101 3
BASIC OPERATING INSTRUCTIONS ......................………………………………………..... 5101 3
ILLUSTRATION AND PARTS LIST - AUTOMATIC A-1 COOKER ...………………………... 5102 4
ILLUSTRATION AND PARTS LIST-MANUAL A-1 COOKER ...…………………………….... 5103 5
ILLUSTRATION AND PARTS LIST-AUTOMATIC A COOKER ..……………………………... 5104 6
ILLUSTRATION AND PARTS LIST-MANUAL A COOKER .......………………………………. 5108 7
MODEL A-1 DOOR ASSEMBLY ................. .............. …………………………………………. 5106 8
MODEL A DOOR ASSEMBLY ................................……………………………………………. 5107 9
WATTS PRESSURE REDUCING VALVE-A-1 COOKER .........……………………………….. 5010 10
STRONG PRESSURE REDUCING VALVE-A COOKER ........………………………………… 5108 11
STEAM MANIFOLD AND VALVE ASSEMBLY. .............…………………………………...... . 5109 12
SERVICING THE STEAM SUPPLY VALVE ..................……………………………………..... 5110 13
STEAM PRESSURE GAUGE ASSEMBLY .....................………………………………………. 5110 13
CONTROL BOX ASSEMBLY ...............................……………………………………………... 5111 14
SUGGESTED STEAM CONNECTIONS ...................………………………………………...... 5112 15
WIRING DIAGRAM ......................................…………………………………………………….. 5113 16
SCHEMATIC DIAGRAM ..............................…………………………………………………...... 5114 17
YOUR "SET IT AND FORGET IT" MARK-FORE
Same as Automatic.
MODEL "A" AND "A-1" STEAM COOKERS are the
ultimate in steam cooking advancement and were
developed through extensive research and
engineering skills to satisfy an urgent demand for an
easy-to-operate, easy-to-service steam cooker.
Independently controlled cooking compartments
constitute a remarkable and superior feature.
Each compartment can be used alone, or all three
can be employed simultaneously because each has
its own timing, steam control and signal devices.
The careful factory workmanship of Market Forge
craftsmen in developing this newest scientific
triumph in steam cooking equipment is your
guarantee of efficient, dependable performances.
HOW TO USE THIS MANUAL
This manual contains maintenance and service instructions for Model "A" and "A-1" automatic and
manually operated steam cookers. The exploded
view drawings of components are aids to the
identification, disassembly and assembly of parts.
The parts listings provide information necessary for
ordering replacement parts (proper part names and
part numbers). When requesting parts or service,
always furnish the model and serial number of your
machine. The serial number is located on the left
side under the bezzel on the con-trol panel. A
listing of Factory Aut horized Service Agencies who
maintain Market Forge equipment will be supplied
without charge upon request.
ORDERING REPAIR PARTS
Many repair parts on the Model "A1" steam
cooker are not interchangeable with parts on
the "A" cooker. It is necessary, therefore, to
furnish the following information when ordering
repair parts.
1. Quantity, part number and description of
part.
2. Model and Serial number for which the part
is required.
3. Please specify how you wish merchandise
shipped. If this information is not furnished
we will ship the best and most economical
way.
NOTE- All part orders received before 2:00
P.M. are shipped the same day the order is
received.
BASIC OPERATING INSTRUCTIONS FOR
AUTOMATIC
1. Check to be sure the steam pressure gauge
regis-ters between 4 and 5 pounds.
2. Place pans of food into the cook ing
compartment to be used.
3. Close and latch the door.
4. Turn the door wheel clockwise to seal the
cooking compartment.
WARNING: Do not permit steam to leak.
Set the door tight enough to make a firm
seal. Steam leakage will cause undue
wear to the gasket.
5. Turn timer pointer clockwise to the 60 minute
mark, and then to the desired cooking time.
6. Pull the-operating handle out and allow it to
lock in this position. The pilot light will signify
this cooking compartment is in operation. At
the end of the cooking cycle the AUTOMATIC
controls will release the operating handle,
shutting off the steam supply and exhausting
the steam from the cooking com-partment.
The pilot light will be turned off and the
buzzer will signify that cooking has been
terminated.
7. Press the buzzer release knob to silence the
buzzer.
FOR MANUALLY OPERATED
1 through 5
6. Set timer. When bell rings, lift handle and
push in to shut off cooker.
5101
Manifold Compartment A-1 Cooker Automatic * Indicates Interchangeable Parts A1 & Old 'A'
comp.)
5102
Cooker
Master Illustration Parts List
ITEM PART NO. DESCRIPTION
1 10-2445* 1" O.D. x 3/8 St. St. Washer
2 10-2328 * 1/4" x 20" Elastic Stop Nut
3 10-2652 * Gasket
4 10-3343* Lock nut
5 10-2988* Rd. Hd. Rivet
6 10-2427 1/2" I.D. Plated washer
7 10-2777 3/8" O.D. x 1 1/2" long spring
8 90-8331 Latch Handle Ass'y.
9 10-2328 Stop Nut
10 10-2755 * Spring-Operating Arm
11 10-2331 No. 6-32 Hex Nut (Cad. PI.)
12 90-9212 Operating Handle Ass'y.
13 90-9215 Control Handle
14 10-1881 No. 10-32 x 3/8 Fl. Hd. Screw
15 10-1967 Shoulder Screw for linkage
16 90-8926 Signal light term ass'y.
17 90-9214 Shaft Reset Button
18 90-8537* Valve Actuating Arm
19 10-2756* Synchronizer Spring
20 10-2515* No. 6 Lock Washer
21 90-7189 Timer Knob
22 10-4748* Pressure Gauge
23 90-8963 Copper Tubing 3/16" O.D. x 18"
24 90-9219 Bezel (2 comp.)
25 10-6238 Identification Name plate
26 10-1654 Drive Pin
27 90-8549* Shield Ass'y. Manifold
28 90-9188 Side Panel-St. St. (2 comp.)
29 10-1740 No. 8-32 x 3/4" Truss Head Screw
30 10-2124* 3/8-16 x 1 1/8 Hex Hd. Screw
31 10-2503* 3/8" Lock washer (cad. PI.)
32 10-1059 3/4" Std. 90° street elbow
33 10-3761 Nipple 3/4" IPS 71/4" Ig.
34 10-6156 Steam Trap
35 10-6157 Adapter Sub—ass'y.
36 10-5514* Timer
37 90-8144 Comb. Steam & Exhaust Header (2 comp.)
10-4370 Brass Nut
10-4371 Brass Sleeve (Female)
90-9220 Bezel (3 comp.)
90-7537 Bezel (4 comp.) Pol. Only
90-9199 Side Panel-St. St. (3 comp.)
90-9203 Side Panel-St. St. (4 comp.)
90-9189 Side Panel—Enamel (2 comp.)
90-9200 Side Panel—Enamel (3 comp.)
90-8145 Comb. Steam & Exhaust Header (3 comp.)
90-8146 Comb. Steam & Exhaust Header (4 comp.)
ITEM PART NO. DESCRIPTION
38 90-8534* Pivot Arm
39 10-4742* Safety Valve 3/4" 8 Ibs. chrome
40 10-1053 Elbow 3/4" IPS, 90°
41 10-5164* Junction Box Cover
42 90-9195 Insulator-Buzzer
43 10-6682 Buzzer
44 10-5997* Solenoid
45 90-8905 Push Rod-Solenoid
46 10-2160 No. 10-32 x 3/8 Philips Truss Hd. Scr. (Cadm. PI.)
47 10-2505* No. 10 Lock washer (Cadm. PI.)
48 10-1717 No. 8-32 x 3/8 Rd. Hd. Screw
49 10-2151 No. 6- 32 x 2 1/4 Ig. Rd. Hd. Mach. Screw
50 10-5613* Micro Switch (Solenoid)
51 10-5511* Micro Switch (Buzzer)
52 90-9223 Spacer
53 10-2428 Flat Washer
54 90-9226 Name plate Panel—Auto 2 comp.
55 10-4619* Replacement element for Steam Trap painted cap
56 10-4559* 1/2" Steam trap complete painted (obs)
57 10-2154 No. 10 Ty. "B" Pan Hd. Screw 1/2" Ig. (Cad. PI.)
58 10-1975 No. 4-40 x 7/16 Flat Hd.Scr.
59 10-1949 No. 6 Ty. "A" Pan Hd. Screw 3/8 Ig. (Cad. PI.)
60 10-5614* Junction Box
61 10-5680 Air Adapter
62 10-5972 Fuse Holder Buss H.K.P.
63 10-5973 Fuse Buss M.D.L. 8/10 amp. Slow
64 10-1703 No. 2 Drive Screw
65 90-9237 Top Cover Ass'y. - St. St. (2,3&4 Comp.
66 90-9186 Bottom Enclosure- St. St.
67 90-9184 Back Side Enclosure - St. St. (2 Comp.)
10-4741* Safety Valve 3/4" 8 Ibs. brass
10-2652 Gasket
90-9229 Name plate Panel—Auto 3 comp.
90-8308 Name plate Panel—Auto 4 comp
10-5625* Replacement element for Steam Trap chrome cap
90-4003* 1/2" Steam Trap complete chrome (obs)
90-9238 Top Cover Ass'y. Enamel (2 & 3 Comp.)
90-9187 Bottom Enclosure - Enamel
90-9231 Back Side Enclosure - St. St. (3 comp.)
90-9896 Back Side End. Ass'y. - St. St. (4 comp.)
90-9185 Back Side End. - Enamel (2 comp.)
90-9232
Back Side Enclosure - Enamel (3
* INDICATES INTERCHANGEABLE
PART A1 & A COOKER - MANUAL CONTROLS
Hex.
Hd. Cap Screw
Screw
header
(2
comp.)
header
(3
comp.)
header
(4
comp.)
Painted cap.
Chrome cap.
painted (obs)
chrome (obs)
40x7/16"
Flat Hd. Scw.
Hd. Screw
St. St.
(2,3.
&4 comp.)
Enamel
(2
&3 comp.)
Ty "B" Pan Hd.
Screw
1/2"
Lg. (Cad. PI.)
St. St.
(2,3, &4
comp.)
Enamel
(2 & 3
comp.)
Ty. "A" Pan Hd. Screw
3/8 Lg. (cad p(.)
St. St.
(2
comp.)
St. St.
St. St.
(4
comp.)
Enamel
(2
comp.)
Enamel
(3
comp.)
Manifold Compartment A-1 Cooker Manually Operated
Master Illustration Parts List
ITEM PART NO. DESCRIPTION
1 102445* 1" O.D. x 3/8 St. St. washer
2 102328* 1/4" x 20 Elastic stop nut
3 10-2652* Gasket
4 103343* Lock nut
5 10-2988* Rd. Hd. Rivet
6 10-2427 1/2" I.D. plated washer
7 10-2777
8 90-8331 Latch Handle Ass'y.
9 10-2328 Stop nut
10 10-2755* Spring Operating Arm
11 90-9212 Operating Handle Ass'y.
12 10-1967* Shoulder Screw for linkage
13 90-8534* Pivot Arm
14 10-1881 No. 10-32 x 3/8 fl. hd. screw
15 90-9215 Control Handle
16 90-8537* Valve Actuating Arm
17 10-2756* Synchronizer Spring
18 10-6307 Timer Knob
19 10-5520* Timer
20 10-4748* Pressure Gauge
21 90-9219 Bezel (2 comp.)
90-9220 Bezel (3 comp.)
90-7537 Bezel (4 comp.) Pol. Only
22 106238 Identification name plate
23 10-1703 No. 2 Drive Screw
24 90-8549* Shield Ass'y. Manifold
25 10-2124*
26 10-2503* 3/8" Lock Washer (cad. p .)
27 10-1740
28 90-8144
29 90-9188 Side Panel-St. St. (2 comp.)
30 10-6156 Steam Trap
31 10-6157 Adapter Sub—Ass'y.
32 90-8963 Copper Tubing 3/16" O.D. x 18"
90-8145
90-8146
90-9199 Side Panel-St. St. (3 comp.)
90-9203 Side Panel-St. St. (4 comp,)
90-9189 Side Panel-Enamel (2 comp.)
90-9200 Side Panel-Enamel (3 comp.)
10-4370 Brass Nut
3/8" O.D. x 1 1/2" long
3/8" - 16 x 1 1/8"
No. 8 - 32 x 3/4 Truss Hd
Comb. steam & exhaust
Comb. steam & exhaust
Comb. steam & exhaust
ITEM PART NO. DESCRIPTION
10-4371 Brass Sleeve (Female)
33 10-3761 Nipple 3/4" IPS 7 1/4" Ig.
34 10-1053 Elbow 3/4" IPS 90°
35 10-4741* Safety Valve 3/4" 8 Ibs. brass
10-4742* Safety Valve 3/4" 8 Ibs. chrome
36 10-1059 3/4" Std. 90°Street Elbow
37 105846 Name plate Panel (2 comp.)
10-5847 Name plate Panel (3 comp.)
90-8312 Name plate Panel (4 comp.)
38 10-4619*
39 10-4559*
40 10-1975
41 10-2505 Lock Washer
42 10-2160
43 909237
44 10-2154
45 90-9186
46 10-1949
47 90-9184
10-5625*
90-4003*
909238
90-9187
90-9231
90-9896
90-9185
90-9232
Replacement element for Steam Trap
Replacement element for Steam Trap
1/2" Steam trap complete
1/2" Steam trap complete
No. 4-
No. 10-32 x 3/8 Phil Truss
Top Cover Ass'y. Top Cover Ass'y. No. 10 Bottom Enclosure Bottom Enclosure —
No. 6
Back Side Enclosure Back Side Enclosure -
(3 comp.)
Back Side End. Ass'y. -
Back Side Enclosure Back Side Enclosure -
5103
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