Bohn SM134 Service Manual
CENTER MOUNT UNIT COOLERS
®
Technical Guide
Models SM | Air Defrost • SME | Electric Defrost
BNCMTB
April 2008
Replaces BN-CMTB, October 2007
www.thecoldstandard.com
®
Table of Contents
Nomenclature .........................................................................................................................................................................................................2
Features & Benets ...............................................................................................................................................................................................
Performance Data ................................................................................................................................................................................................. 4
Specications ..........................................................................................................................................................................................................5
Physical Data ...........................................................................................................................................................................................................6
Dimensional Data ..................................................................................................................................................................................................6
Replacement Parts by InterLink™ ....................................................................................................................................................................7
Standard Nozzle Selection .................................................................................................................................................................................
We have made a commitment to customer needs, innovation and environmental stewardship and have dedicated
ourselves to delivering energy-ecient choices. PSC and EC motors will reduce costs, improve the bottom line and
enhance equipment performance and service life.
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Choose the most energy-ecient motor available for evaporators.
The EC motor is an Energy Solutions® option on new Bohn Center Mount
evaporators. Available on all new equipment or as an easy-to-install, drop-in
replacement aftermarket part from InterLink™ Commercial Refrigeration Parts.
Because they’re a drop-in replacement for existing shaded pole and PSC
motors, installation is quick and easy. It’s a high impact, quick payback
solution for reducing costs and achieving green initiatives without replacing
the entire system.
EC motors by InterLink are up to 75% ecient - that’s a 51-59% increase
over shaded pole motors and a 30-35% increase over permanent-split
capacitor (PSC) motors. With all of this added eciency, you can count on
more energy savings and lower operational costs while taking a step in the
right direction toward conserving our planet’s resources.
To learn more about EC motors, visit www.interlinkparts.com/ec.
Nomenclature
SM 052 A E
Model Series Capacity Electrical Code Design Revision
SM = Bohn Center Mount,
air defrost
SME = Bohn Center Mount,
electric defrost
# BTUH x 100 A = 115/1/60
B = 208-230/1/60
AE = 115/1/60 (EC)
BE = 208-230/1/60 (EC)
©2008 Heatcraft Refrigeration Products LLC
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®
Features & Benefits
Cabinet
Air moves across the ceiling in both directions providing even air distribution throughout the cooler
•
Compact, ceiling mount and center mount design allows for shelving and storage of product around all walls
•
Heavy-gauge grained aluminum cabinet cleans easily and looks attractive
•
Stainless steel screws prevent rust streaks
•
Panels on ends quickly remove for complete access to refrigerant components and electrical terminal block during
•
installation and servicing
Quick disconnect, waterproof plug and receptacle for each motor in all models
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Wire fan guards with PVC coating for durability
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Coil
High-eciency aluminum ns with full collars cover mechanically expanded copper tubes
•
Coils are dehydrated and sealed at the factory
•
Highest quality tubular heaters provide fast and economical defrost
•
Generous coil surface gives proper compressor balance
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Standard adjustable defrost termination fan delay thermostat
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Drain Pan
Double drain pan eliminates drain pan sweating
•
Tapered mounting provides proper slope for condensate drainage to one end of the unit
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Motors
Motors are life lubricated and thermal overload protected
•
EC motors (optional) available factory-installed or as a drop-in replacement through InterLink™ Commercial
•
Refrigeration Parts in 115/1/60, 208-230/1/60 voltages
PSC motors are optional for 115/1/60, 208-230/1/60 voltages
•
PSC motors or EC motors are required for 50 Hz operation
•
Options
Unit Congurations: mounted components, pre-assembled, pre-charged and Beacon II™
•
- Units available with mounted TXV and mounted TXV / solenoid valve
- Pre-assembled units come with mounted TXV, liquid line solenoid valve and room thermostat
- Pre-charged units come with mounted TXV, liquid line solenoid valve, room thermostat and quick connect ttings
- Mounted room thermostat
- Beacon II units come with electronic expansion valves, pressure transducer, temperature sensors and Beacon
control board
• Most models available with glycol circuiting (see glycol product brochure)
• Units available with stainless steel housing and drain pan
• Units available with copper ns. Air defrost units also available with polyester coated ns or various coil coatings options
All Bohn Center Mount units are UL listed for US and Canada and meet NSF standards
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