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P/N 3110586_A 

U.S. & Canada 1-800-922-1919 • Mexico 1 800-890-2900 • www.hussmann.com

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BEFORE YOU BEGIN

Read these instructions completely and carefully. 

PERSONAL PROTECTION EQUIPMENT (PPE)

Personal Protection Equipment (PPE) is required whenever installing or servicing this 
equipment. Always wear safety glasses, gloves, protective boots or shoes, long pants, and a 
long-sleeve shirt as required when installing or servicing this equipment.

1.  If  the information in these instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury 

or death.

2.  Installation and service must be performed by a qualified installer or service agency.
3.  This unit is designed only for use with R-290 gas as the designated refrigerant. 

THE REFRIGERANT LOOP IS SEALED. ONLY A QUALIFIED TECHNICIAN SHOULD ATTEMPT TO SERVICE!

•  Propane is flammable and heavier than air.
•  It collects first in the low areas but can be circulated by the fans.
•  If  R-290 is present or even suspected, do not allow untrained personnel to attempt to find the cause.
•  The propane gas used in the unit has no odor. 
•  The lack of  smell does not indicate a lack of  escaped gas.
•  If  a leak is detected, immediately evacuate all persons from the store, and contact the local fire department to advise them that a 

pro pane leak has occurred.

•  Do not let any persons back into the store until the qualified service technician has arrived and that technician advises that it is 

safe to return to the store.

•  A hand-held propane leak detector (“sniffer”) shall be used before any repair and/or maintenance.
•  No open flames, cigarettes or other possible sources of  ignition should be used inside the building where the units are located 

until the qualified service technician and/or local fire department determines that all propane has been cleared from the area and 
from the refrigeration systems.

•  Component parts are designed for propane and non-incendive and non-sparking. Component parts shall only be replaced with 

identical repair parts.

FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE.

Summary of Contents for MicroSC ISMGG2DA-A

Page 1: ...t can be circulated by the fans If propane gas is present or even suspected do not allow untrained personnel to attempt to nd the cause The propane gas used in the unit has no odor The lack of smell d...

Page 2: ...s present or even suspected do not allow untrained personnel to attempt to find the cause The propane gas used in the unit has no odor The lack of smell does not indicate a lack of escaped gas If a le...

Page 3: ...ecover Refrigerant 2 3 Charging 2 3 Waste Outlet and Water Seal 2 4 START UP OPERATION Controller Operation 3 1 Key Function 3 2 Further Information 3 2 Connections 3 3 LED 3 4 KDE PLUS Buttons 3 5 Se...

Page 4: ...ucts ATTENTION Merchandiser must operate for 24 hours before loading product Regularly check merchandiser temperatures Do not break the cold chain Keep products in cooler before loading into merchandi...

Page 5: ...nt should be thoroughly examined for shipping damage before and during unloading This equipment has been carefully inspected at our factory Any claim for loss or damage must be made to the carrier The...

Page 6: ...of the unit UPPER ISLAND LOWER ISLAND AIR INTAKE AIR EXHAUST 1 3 This warning does not mean that Hussmann products will cause cancer or reproductive harm or is in violation of any product safety stand...

Page 7: ...Use a forklift or dolly to remove the merchandiser from the trailer EXTERIOR LOADING Do NOT walk on top of merchandisers or damage to the merchandisers and serious personal injury could occur Do not...

Page 8: ...se Carefully remove the strapping wrapped around the case Remove white protectors around the case 10 pieces 4 Remove the frontal screws from the skid crate brackets 4 brackets total 5 Identify the tal...

Page 9: ...he power cord is located below the frontal baffle taller case attached with cable ties 6 Lift case with forklift and remove the screws from the shipping braces both sides of the case in order to set t...

Page 10: ...wear cracks chipping or peeling To avoid these impacts it is required to install a floor bumper or alike around the case or other type of protection to prevent damage to the wood SEALING MERCHANDISER...

Page 11: ...e all the screws from Corner High Side LH 2 Remove screws from corner low side LH only the ones attached to wood panel end LH 3 Carefully pull the Wood Panel End LH to the right NOTES 1 APPLICABLE STA...

Page 12: ...d to wood panel front 4 Carefully pull the wood panel front to the left 5 Remove screws on the condensing unit baffle Remove the baffle to access the condensing unit Pull Wood Front Panel to the Left...

Page 13: ...xtension cord 6 Ensure that the proper electrical requirements for the equipment are supplied 7 Verify field electrical connections are tight 8 Verify all electrical wiring is secured and clear of any...

Page 14: ...1 10 INSTALLATION P N 3110586_A U S Canada 1 800 922 1919 Mexico 01 800 890 2900 www hussmann com NOTES...

Page 15: ...Do not use an extension cord Never plug in more than one merchandiser per electrical circuit Always use a dedicated circuit with the amperage stated on the unit Plug into an outlet designed for the pl...

Page 16: ...0 propane equipment Failure to follow instructions can result in an explosion death injury and property damage If a leak is detected follow store safety procedures It is the store s responsibility to...

Page 17: ...harge the system The charge amount is shown on the serial plate Only R 290 grade refrigerant can be used Standard propane does not meet the purity moisture content of R 290 and therefore cannot be use...

Page 18: ...of the service tubes before brazing them shut Remove all service ports If a Schrader valve is used on the compressor service tube it must be removed and the previous steps followed in order to braze t...

Page 19: ...F A complete list of setpoints can found on a separate document that shipped with the case The document number is P N 3056058 a The setpoint is the adjustable pre programmed temperature b The differe...

Page 20: ...URTHER INFORMATION INPUT CHARACTERISTICS Measurement range Accuracy Resolution Buzzer NTC 50 0 C 110 C on 3 digit display with sign 1 0 for temperatures below 30 C 0 5 for temperatures between 30 C an...

Page 21: ...o KDEPlus or KDWPlus external keyboard or ECPlus echo module 3 LINE These are power supply terminals 19 18 PB1 probe connection 4 OUT2 Shared Terminal 21 20 PB2 probe connection 5 N O OUT2 23 22 PB3 p...

Page 22: ...rmanently on Defrost active Blinking Activated manually or from Digital Input OFF otherwise 3 Fans Permanently on Fans active OFF otherwise 4 Reduced SET Economy Permanently on Energy Saving active Bl...

Page 23: ...ed and released Press for at least 5 secs Start up 1 Scrolls through menu items Decreases values Activates the Manual Defrost function from outside menus 2 Scrolls through menu items Decreases values...

Page 24: ...y Action Pressed and released Press for at least 5 secs Start up 1 Scrolls through menu items Decreases values Activates the Manual Defrost function from outside menus 2 Scrolls through menu items Dec...

Page 25: ...20 19 18 GND D GND D OC 12V TTL RS 485 MODULE OPTIONAL SENSOR TEMP DEFROST ORANGE 12V D GND KEYB 15 cm MAX NEUTRO NEUTRO PB1 PB2 SENSOR TEMP AIR GREEN KEYB 12V OC D GND D GND RS 485 MODULE OPTIONAL NE...

Page 26: ...mperatures should be measured at the center of the discharge honeycomb Defrosts are time initiated and temperature terminated The defrost setting is factory set as shown above To ensure a thorough def...

Page 27: ...placed inside the merchandisers until merchandisers are at proper operating temperature Allow merchandiser 24 hours to operate before loading product Proper rotation of product during stocking is nec...

Page 28: ...3 10 STARTUP OPERATION P N 3110586_A U S Canada 1 800 922 1919 Mexico 01 800 890 2900 www hussmann com NOTES...

Page 29: ...with water Never introduce water faster than the waste outlet can remove it Self contained models empty into an evaporation pan that will overflow if too much water is introduced during cleaning Do U...

Page 30: ...nser coils should be cleaned at least once per month Additional cleaning may be needed depending on the operational environ ment A dirty condenser blocks normal airflow through the coils NEVER USE SHA...

Page 31: ...operating Remove accumulated debris from the evaporation pan Wipe down heater coil with a cloth and warm water Be sure to remove any dirt debris or liquids from the heater coil Water introduced during...

Page 32: ...unit Heat and air registers fans and doors etc x Check for water leaks x Clean evaporator coil s and fan blade s Do not use an acid base cleaner Rinse off any cleaner residue x Clean discharge air hon...

Page 33: ...ere is no voltage in the refrigerator Remove front grille to have acess to the machine compartment 3 Remove condensing unit screws 4 Slide out the condensing unit Fig A Be careful using the condesing...

Page 34: ...ct direction 11 Close air gaps under fan plenum Warmer air moving into refrigerated air reduces effective cooling If the plenum does not rest against the case bottom without gaps apply foam tape to th...

Page 35: ...information or other support contact your Hussmann representative Please include the model and serial number of the product Hussmann Corporation Corporate Headquarters Bridgeton Missouri U S A 63044 2...

Page 36: ...Hussmann Corporation 12999 St Charles Rock Road Bridgeton MO 63044 2483 www hussmann com...

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