Middleby Marshall PS520 - Manual (Page 16)

12
SECTION 2
INSTALLATION
WARNING
DO NOT USE CONDUIT OR GAS LINE
FOR GROUND CONNECTION.
CAUTION
IT IS RECOMMENDED THAT THE OVEN
BE PLACED UNDER A VENTILATION
HOOD FOR ADEQUATE AIR SUPPLY
AND VENTILATION.
ELECTRIC SUPPLY TO BE
PROVIDED BY CUSTOMER
CIRCUIT BREAKER
Separate circuit breaker with lockout/tagout electrical
shutoff for each oven. Wire each oven separately.
50 Amp circuit breaker for 208-240V, or 30 Amp circuit
breaker for 380-480V.
ELECTRICAL SPECIFICATIONS
DOMESTIC: 208V main blower motors and elements,
1 Ph, 39.9 Amp draw, 50/60 Hz, 208-240V control circuit,
2 pole, 3 wire system per oven (2 hot, 1 grd).
Do NOT use conduit for ground.
or
DOMESTIC: 240V main blower motors and elements,
1 Ph, 34.6 Amp draw, 50/60 Hz, 208-240V control circuit,
2 pole, 3 wire system per oven (2 hot, 1 grd).
230V main blower motors and elements, 1 Ph, 33.0 Amp
draw, 50/60 Hz, 208-240V control circuit, 2 pole, 3 wire
system per oven (2 hot, 1 grd).
Do NOT use conduit for ground.
or
EXPORT: 380V elements, 1 Ph, 23.0 Amp draw, 50/60 Hz,
208-240V control circuit and main blower motor,
4 pole, 4 wire system per oven (2 hot, 1 neutral, 1 grd).
400V elements, 1 Ph, 21.8 Amp draw, 50/60 Hz, 208-240V
control circuit and main blower motor, 4 pole, 4 wire
system per oven (2 hot, 1 neutral, 1 grd).
Do NOT use conduit for ground.
or
EXPORT: 480V elements, 1 Ph, 17.3 Amp draw,
50/60 Hz, 208-240V control circuit and main blower motor,
2 pole, 4 wire system per oven (2 hot, 1 neutral, 1 grd).
Do NOT use conduit for ground.
UTILITY ROUGH-IN DIMENSIONS AND POSITIONING
FOR PS520-SERIES OVENS
ELECTRICAL RATING
7.6 – 9.2 kW/hr.
SUPPLY WIRE
Supply wire size must be in accordance with the National
Electrical Code (current edition) and must be in compli-
ance with local codes.
SUGGESTED
If space permits, service should be located near the
control console end of the oven(s) to allow convenient
access to safety switches.
CAUTION
UNIT MUST HAVE AIR VENT PLATES IN-
STALLED OR WARRANTY WILL BE VOID.
II. VENTILATION GUIDELINES
A mechanically driven ventilation system is
recommended for
the PS520 Series Middleby Marshall conveyorized electric ovens.
Local codes and conditions vary greatly from one area to
another and must be complied with. Following are the
suggested requirements for good ventilation. Please re-
member these are recommendations or guidelines, you
may have a special condition or problem that will require
the services of a ventilation engineer or specialist. Proper
ventilation is the oven owner’s responsibility. Improper
ventilation can inhibit oven performance.
Please Note: There are now two “stand off” ‘C’ Channels
that must be installed in the field (See Section 6: PARTS LIST,
page 44-45 for reference, Item 5).
Figure 2-9. Typical PS520-Series Oven(s)
Installation