Middleby Marshall PS520 installation manual Table of Contents

TABLE OF CONTENTS
	Page
SECTION 1
I. MODEL IDENTIFICATION	1
SERIES PS520 ELECTRICAL SPECIFICATIONS	2
II. COMPONENT FUNCTION	4
A. Conveyor Motor and Conveyor Belt	4
B. Blower Fan	4
C. Electric Heaters	4
D. Cooling Fan	4
E. Air Fingers and Blank Plates - See Figure 1-9	4
SECTION 2
I. UNLOADING	7
PS520 OVEN INSTALLATION
REQUIRED KITS AND EQUIPMENT	8
PARTS LIST FOR SERIES PS520 ELECTRIC OVEN
INSTALLATION KIT	8
UTILITY ROUGH-IN DIMENSIONS AND POSITIONING
FOR PS520-SERIES OVENS	12
CIRCUIT BREAKER	12
ELECTRICAL SPECIFICATIONS	12
ELECTRICAL RATING	12
SUPPLY WIRE	12
SUGGESTED	12
II. VENTILATION GUIDELINES	12
III. ELECTRICAL CONNECTION INFORMATION FOR
PS520-SERIES OVENS	13
IV. ELECTRIC SUPPLY FOR ELECTRIC-HEATED
OVENS	12
SECTION 3 INSTALLATION
I. CONTROL FUNCTIONS	15
II. COMPONENT INFORMATION AND LOCATION	16
A. Door Safety Switch	16
B. Blower Switch	16
C. Heat Switch	16
D. Temperature Controller	16
E. Conveyor	17
MEASURING CONVEYOR SPEED	17
III. STEP-BY-STEP OPERATION	18
A. Startup Procedures	18
Daily Startup	18
Power Failure	18
B. Shutdown Procedure	18

TABLE OF CONTENTS
(Continued)
	Page
IV. NORMAL OPERATION - STEP-BY-STEP	20
A.Daily Startup Procedure	20
B. Daily Shutdown Procedure	20
V. QUICK REFERENCE: TROUBLESHOOTING	22
SECTION 4 MAINTENANCE
I. MAINTENANCE - DAILY	24
A. Exterior	24
B. Cooling Fan	24
C. Conveyor Belt	24
D. Crumb Pans	24
II. MAINTENANCE - MONTHLY	25
A. Removing Conveyor From Oven For Cleaning	25
B. Air Fingers Disassembly For Cleaning	27
C. Reassembly of Air Fingers	28
D. Reinstall End Plugs	31
E. Conveyor Reassembly Into Oven	32
F. Checking Conveyor Belt Tension	32
G. Conveyor Belt Link Removal	33
H. Attaching Drive Chain	34
III. MAINTENANCE - EVERY 3 MONTHS	35
A. Electrical Terminals	35
B. Ventilation	35
IV. MAINTENANCE - EVERY 6 MONTHS	35
PS520-SERIES ELECTRIC OVEN KEY SPARE
PARTS	36
KEY SPARE PARTS KIT	36
SECTION 5 TROUBLESHOOTING
Troubleshooting Charts	37
SECTION 6 - PARTS LIST
SINGLE OVEN EXPLODED VIEW	41
RELAY PANEL	43
BLOWER ASSEMBLY	45
CONTROL PANEL	47
SINGLE CONVEYOR	49
SECTION 7 ELECTRICAL SCHEMATICS
Wiring Diagram, E208-240V 50/60/1, PS520	51
Wiring Diagram, E380-480V 50/60/1, PS520	52
Wiring Diagram, E230-240V CE PS520/1820S	53
Wiring Diagram, E380-400V CE PS520/1820S	54

NOTE

Wiring Diagrams are in Section 7 of this Manual. The diagram for each oven is also on the lower inner surface of its Control Console.

iv