RefPlus LS-LP-LA-LV SERIES Guide

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WALK-IN COOLERS
SERIES
LS-LP-LA-LV
& MAINTENANCE INSTRUCTIONS
INSTALLATION, OPERATION

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
2
SAFETY CONSIDERATIONS . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . 3
INSTALLATION
STEP 1 – COMPLETE PRE-INSTALLATION CHECKS. . . 3
STEP 2 – LOCATION . . . . . . . . . . . . . . . . . . 3
STEP 3 – MOUNTING . . . . . . . . . . . . . . . . . . 3
STEP 4 – CONNECT DRAIN LINE . . . . . . . . . . . 3
STEP 5 – REFRIGERANT CONNECTIONS . . . . . . . . 4
STEP 6 – EXPANSION VALVE CONNECTION . . . . . . 4
STEP 7 – WIRING . . . . . . . . . . . . . . . . . . . 4
START-UP
LEAK TESTING AND EVACUATION . . . . . . . . . . . . 4
FAN MOTOR . . . . . . . . . . . . . . . . . . . . . . . 4
FAN DELAY DEFROST TERMINATION CONTROL . . . . . 4
FAN DELAY DRAIN PAN CONTROL . . . . . . . . . . . 4
CHECK SUPERHEAT. . . . . . . . . . . . . . . . . . . . 4
DEFROST SYSTEM . . . . . . . . . . . . . . . . . . . . 5
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . 5
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 5
CLEANING. . . . . . . . . . . . . . . . . . . . . . . . . 5
UNIT SPECIFICATIONS . . . . . . . . . . . . . . . 6
TROUBLESHOOTING CHART. . . . . . . . . . . . 6
TECHNICAL DATA. . . . . . . . . . . . . . . . . . . . . 7
TECHNICAL DATA (CONT’D) . . . . . . . . . . . . . . . 8
REFRIGERATION SYSTEM
START-UP CHECK LIST . . . . . . . . . . . . . . . . . 10
WARRANTIES . . . . . . . . . . . . . . . . . . . . 11
1 = 120/1/60
2 = 240/1/60
5 = 208-240/3/60
8 = 600/3/60
9 = 480/3/60
Product Generation
Unit Capacity @ 10oF T.D. 22,400 Btu/hr
NOMENCLATURE
CONTENTS
L = Low
S = Silhouette
P = Profile
A=Air
A = Air Defrost
E = Electric Defrost
G = Reverse Cycle Hot Gas Defrost
W/Electric Heated Drain Pan
H = Three Pipe Hot Gas Defrost
W/Electric Heated Drain Pan
R = Reverse Cycle Hot Gas Defrost
T = Three Pipe Hot Gas Defrost
L S A 224 1 — 1

INSTALLATION
STEP 1 -
COMPLETE PRE-INSTALLATION CHECKS
Examine for damage incurred during shipment.
File a claim immediately with transit company if
damage is found.Verify that the nameplate electrical
requirements match the available power supply.
Check the shipment for completeness.
STEP 2 - LOCATION
All unit coolers should be installed flush against the
ceiling. The unit cooler must be level in all directions
to ensure proper drainage of condensate. Be sure
there is sufficient clearance between the ceiling and
unit cooler to allow for cleaning the unit cooler top.
When deciding on the location of the unit cooler,
consider the following:
• Location of aisle racks
• Location relative to compressor for minimum
pipe runs
• Location of condensate drains for minimum run
• The air pattern must cover the entire room
• Never locate unit coolers over doors or door
openings
• Allow sufficient space between rear of unit cooler
and wall to permit free return of air
SAFETY CONSIDERATIONS
Installing, starting up, and servicing equipment can
be hazardous due to system pressures, electrical
components and equipment location (roofs, elevated
structures, etc.). Only trained, qualified installers and
service mechanics should install, start up, and service
this equipment.
When working on the equipment, observe precautions
in the literature and on the tags, stickers, and labels
attached to the equipment.
Follow all safety codes.Wear safety glasses and work
gloves. Keep quenching cloths and fire extinguisher
nearby when brazing. Use care in handling, rigging,
and setting bulky equipment.
INTRODUCTION
These instructions describe installation, start-up,
and service for the RefPlus refrigeration unit coolers.
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
3
WARNING
Before installation, always check to be sure main
power to systems is OFF. Electrical shock can
cause personal injury or death.
NOTE
Avoid placement of the unit cooler directly above
doors and door openings where low temperature
is being maintained. Position the unit cooler so
the discharge air blows above the doors. Install
a baffle if door extends above the blower level.
NOTE
Unit coolers with electric defrost require a 20 in.
clearance at the left end when facing the fans
to allow removal of defrost heaters.
NOTICE
The unit cooler must be mounted level for proper
condensate draining. Adequate support must be
provided to hold the weight of the unit cooler.
Note: The area above the unit must be sealed and
accessible to facilitate hand cleaning without the
use of tools in order to comply with National
Sanitation Foundation (NSF) Standard 7.
STEP 3 - MOUNTING
Most unit coolers can be mounted with either bolts
or rod hangers. Use 5/16 in. bolts and washers for
unit coolers weighing up to 250 pounds. Use 3/8 in.
bolts and washers for unit coolers weighing from
250 to 500 pounds. For unit coolers over 500
pounds, use 5/8 in. bolts and washers.
STEP 4 - CONNECT DRAIN LINE
For all unit coolers, a drain line union is recommend-
ed for ease of installation and future servicing and
should be located in close proximity to the drain pan.
LS, LP & LA UNIT COOLERS – A 7/8 in. ID removable
drain fitting is supplied with each unit. Follow steps
1 through 4 above for connecting the drain line.
FOR ALL UNIT COOLERS, connect the drain line as
follows:
1. Replace the rubber gasket to prevent
condensate leakage.
2. Locate the union as close to the drain pan
as possible.
3. Using two wrenches, tighten the drain fitting.
The use of two wrenches prevents the drain
fitting from twisting and damaging the unit
cooler.
4. Sharply pitch the drain line and exit it through
the cooler with a short run.
5. Insulate and seal the drain line where it
passes through the wall.
6. Locate the drain traps in warm ambient air
temperature to prevent freeze up.
NOTE
If the cooler temperature is below 32ºF,
a field supplied drain line heater (15 W per foot)
may be required.When installing the heater,
be sure to avoid overlapping.
LS UNIT COOLERS – These unit coolers should be
located in a position where the air discharge is
toward the door. The coil face on the unit cooler
should be least 7 in. away from the wall.
LP & LA UNIT COOLERS – These unit coolers should
be located in the center of the cooler with air
discharge toward the back or side wall.

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
4
FAN DELAY DEFROST TERMINATION CONTROL
This control located on the coil plate senses the
coil temperature. To provide fan delay, the defrost
thermostat must be turned off.
1. Set thermostat between 20ºF and 30ºF
or above.
2. Adjust defrost timer up to maximum
of 45 minutes.
3. Set the thermostat between 55 to 60ºF
to defrost unit coolers operating between
–40 to –20ºF. To defrost unit coolers
operating between –10 to 10ºF, set the
thermostat between 60 to 65ºF.
FAN DELAY DRAIN PAN CONTROL
The fan delay drain pan control senses the general
coil temperature.
• With temperature rise, the fan delay thermostat
de-energizes the fan and energizes the electric
pan heaters.
• After defrost cycle, the coil temperature drops
and the fan delay thermostat energizes the motor
and de-energizes the heaters.
• Defrost timer must be set long enough to
completely melt the ice in the unit cooler. Set
the thermostat at 20 to 25ºF and the differential
at minimum.
CHECK SUPERHEAT
After the temperature has reached the desired
temperature, the unit cooler superheat should be
checked and adjustments made if necessary.
Generally, systems with a design temperature
difference (TD) of 10ºF should have a superheat
value of 6 to 10ºF for maximum efficiency. For
systems operating at higher TD, the superheat
can be adjusted to 12 to 15ºF as required.
IMPORTANT
After correcting a faulty defrost cycle, it is
essential that the coil, drain pan and unit cooler
be free and clear of ice before placing the unit
cooler back on automatic operation.
To ensure unit cooler performance, the expansion
valve must be set at the proper superheat and
at the lowest temperature in which the system is
expected to operate.
STEP 7 - WIRING
All systems wiring must be in compliance with all
applicable local and national codes.
All internal wiring of fan motors, tubular heaters and
combination defrost termination fan delay control
have been factory connected. All wiring connections
terminate on a single terminal block in the wiring
compartment and are clearly labeled.
START-UP
LEAK TESTING AND EVACUATION
Leak testing and evacuation must be done in
accordance with local and national codes.
Once all refrigerant connections are made, leak test
all joints before charging the system with refrigerant.
After leak testing, all moisture and non-condensable
gas must be evacuated from the system. Attach high
vacuum line pump and gauge on both high and low
pressure sides of the system. A minimum vacuum
level of 100 microns is required to effectively
remove moisture.
Be sure all valves such as compressor, hot gas,
receiver, and liquid solenoid valves are open. Break
the vacuum in the system with the refrigerant to
be used. Always charge the refrigerant into the
system through a new 16 cu. in drier (field supplied)
in the charging manifold line.
FAN MOTOR
The fan motor may restart on automatic thermal
protection if the coils are frozen. The fan motor may
cycle if the coil is blocked. Check the supply voltage
at the motor leads if motor is inoperable.
CAUTION
Before starting unit cooler, be sure wire fan
guards are secured in place over each fan.
IMPORTANT
The use of a calibrated pressure gauge and
regulator must always be used with nitrogen
gas cylinders.
Drain traps on low temperature unit coolers must
be outside of refrigerated enclosures. In the instance
where traps are subject to freezing temperatures,
wrap the traps with heat tape and insulation.
Always trap drain lines individually to prevent
vapor migration.
STEP 5 - REFRIGERANT CONNECTIONS
All refrigerant system components must be installed
in accordance with applicable local and national
codes using proper engineering practices.
Use top quality refrigeration tubing that is internally
free of dirt, humidity or other contaminants. Unsealed
tubing should not be used. Long radius elbows are
recommended.
Dry nitrogen must be swept through the lines while
joints are brazed to avoid oxidation and carbon
deposits.
All external piping must be well supported. The unit
cooler will not support external piping or valves.
If the condition arises where the suction line
must be raised to a point higher than the suction
connection on the unit cooler, a suction line trap
must be installed on the unit cooler.
Horizontal suction lines should slope away from the
evaporator toward the compressor. Leak check and
evacuate the system using a two-stage deep vacuum
pump.
STEP 6 - EXPANSION VALVE CONNECTION
All unit coolers are supplied with a 1/2 in. OD
sweat expansion valve connection. Expansion valves
are field supplied.
LS, LP & LA unit coolers require the use of an
externally equalized expansion valve and are
provided with a 1/4 in. OD equalizer line.
Check the operation of the expansion valve after the
system has reached the desired cooler temperature.
If the coil is not receiving enough refrigerant, reduce
the superheat setting on the expansion valve.

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
DEFROST SYSTEM
AIR DEFROST UNIT COOLERS:Fan motors run
continuously and a defrost time clock or low-pressure
setting stops the compressor when defrost is required.
ELECTRIC DEFROST UNIT COOLER:A time clock
starts the defrost process by stopping the fan and
energizing the heaters.When the defrost thermostat
resets the time clock, it de-energizes the heaters and
re-starts the fan motors.
REVERSE CYCLE HOT GAS DEFROST UNIT
COOLERS:Reverse cycle defrost systems introduce
compressor discharge gas through the suction line
during defrost. The amount of gas introduced is
controlled by a solenoid bypass valve and a gas
defrost time clock.
Condensed refrigerant is relieved through a check
valve. The check valve bypasses the expansion valve
leading to the liquid line which has reduced
pressure. The drain pan is warmed by the entering
hot gas to avoid freezing. Defrost is initiated and
terminated by the time clock.
NOTE
Minimum compressor suction superheat of 20ºF
may override these recommendations on some
systems with short line runs. NOTE
The unit cooler must not be in operation more
than 16 hours per day.
NOTE
Using a suction to liquid heat exchanger is
recommended.
IMPORTANT
Do not use alkaline or acidic solutions; they will
damage the coils. Remove the fan guard to clean
the inner face of the fan coil.
NOTE
A field-installed pressure regulating valve may be
required on low temperature systems to control
compressor crankcase pressure.
NOTE
This method will yield accurate results as long as the
pressure drop through the unit cooler coil is low.
WARNING
If the condensing unit does not have flooded
condenser head pressure control, then the
condensing unit must have discharge pressure
above the equivalent 105ºF condensing pressure.
THREE PIPE HOT GAS DEFROST UNIT
COOLERS:During defrost, compressor discharge
gas is introduced in a separate hot gas line. The
amount of gas introduced is controlled by a
solenoid bypass valve and a gas defrost time clock.
To avoid excessive accumulation of liquid in the
suction accumulator, a heat exchanger is recommend-
ed. The drain pan is warmed by the entering hot gas
to avoid freezing. The time clock cycles fan motors,
liquid and hot gas solenoids.
SERVICE
INSPECTION
After one day of operation, check for any vibration
in the unit cooler. All unit coolers should be checked
at least once a month for proper defrosting. It may
be necessary to periodically change the number of
defrost cycles or adjust the duration of defrost.
Under normal usage conditions, proper unit cooler
maintenance should be done every six months to
include the following:
1. Check all wiring and insulators.
2. Check and tighten all electrical connections.
3. Inspect contactors for proper operation and
for worn contact points.
4. Check all fan motors. Tighten motor mount
bolts/nuts and tighten fan set screws.
5. Clean condenser coil surface.
6. Check refrigerant and oil level in the system.
7. Check operation of the control system ensuring
all safety controls are operating properly.
8. Check all defrost controls are functioning
properly.
9. Clean the unit cooler coil surface.
10. Clean the drain pan and check the drain pan
drain line for proper drainage.
11. Check drain line heater for proper operation,
cuts and abrasions.
12. Check and tighten all flare connections.
See troubleshooting chart for troubleshooting
information.
To properly determine the superheat of the unit
cooler, follow the steps below:
1. Measure the temperature of the suction line
at the point where the bulb is secured.
2. Determine the suction pressure in the suction
line at the bulb location by using one of the
following methods :
A)Placing a gauge in the external equalized
line.
B)Placing a gauge directly in the suction line
near the unit cooler or directly in the
suction header of the unit cooler.
3. Convert the pressure reading to saturated unit
cooler temperature by using a temperature
pressure table. See table # 1.
4. Subtract the saturated temperature from the
actual suction line temperature reading. The
difference is superheat.
An alternate method to determine superheat of the
unit cooler can be used :
1. Measure the temperature of the suction line at
the point where the bulb is secured (outlet).
2. Measure the temperature of one of the distrib-
utor tubes close to the unit cooler coil (inlet).
3. Subtract the inlet temperature from the outlet
temperature. The difference is superheat. CLEANING
The unit cooler should be checked periodically for
dirt accumulation. Grease and dust should be
removed from the fan, fan guards, and drain pan.
Occasional cleaning of finned surfaces can be done
by dusting the fins and then cleaning with a mild
detergent and warm water spray. Always pressure
clean in reverse of the air flow.

UNIT SPECIFICATIONS
FOR ALL UNITS:
- For R-134a or R-22 refrigerant charge, multiply R-404 by 1.09.
- Operating charge is based on 30% liquid and 70% vapor at 25ºF suction.
LS SERIES:
- Use LSR model for hot gas reverse cycle defrosts.
- Use LST model for hot gas three pipe defrost with gas drain pan.
- Air throw for LS Series: 25 to 35 feet.
LP SERIES:
- Use LPG model for hot gas reverse cycle defrost with electric drain pan.
- Use LPH model for hot gas three pipe defrost with electrical drain pan.
- Air throw for LP Series: 12 to 18 feet on each side.
LA SERIES:
- Use LAG model for hot gas reverse cycle defrost with electric drain pan.
- Use LAH model for hot gas three pipe defrost with electric drain pan.
- Air throw for LA Series: 10 to 15 feet on each side.
TROUBLESHOOTING CHART
SYMPTOMS POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS
Fan(s) will not operate 1. Main switch open 1. Close switch
2. Blown fuses 2. Replace fuses. Check for short circuits
3. Defective motor or overload conditions.
4. Defective timer or defrost thermostat 3. Replace motor
5. Unit in defrost cycle 4. Replace defective component
6. Coil does not get cold enough to reset thermostat 5. Wait for completion of cycle
6. Adjust fan delay setting of thermostat
Room temperature too high 1. Room thermostat set too high 1. Adjust thermostat
2. Superheat too high 2. Adjust thermal expansion valve
3. System low on refrigerant 3. Add refrigerant
4. Coil iced-up 4. Manually defrost coil and check defrost
controls for malfunctions
Ice accumulating on ceiling 1. Defrost duration is too long 1. Adjust defrost termination thermostat
around evaporator and/or on 2. Fan delay not delaying fans after defrost period 2. Defective defrost thermostat or not adjusted properly
fan guards, venturi, or blades 3. Defective defrost thermostat or timer 3. Replace defective components
4. Too many defrosts 4. Reduce number of defrost
Coil not clearing of frost 1. Coil temperature not getting above 1. Check heater operation
during defrost cycle freezing point during defrost 2. Adjust timer for more defrost cycles
2. Not enough defrost cycles per day 3. Adjust defrost thermostat or timer for longer cycle
3. Defrost cycle too short 4. Replace defective component
4. Defective timer or defrost thermostat
Ice accumulating in drain pan 1. Defective heater 1. Replace heater
2. Unit not pitched properly 2. Check pitch and adjust if necessary
3. Drain line plugged 3. Clean drain line
4. Defective drain line heater 4. Replace heater
5. Defective timer or thermostat 5. Replace defective component
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
6

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
7
DRAIN FITTING KIT
All Models
DFK-2
DEFROST CONTROL
All Models R&T G&H E
TERMINAL BLOCK
All Models
REM 0004
WIRING HARNESS
All Models
Note: All electric defrost units (E) use 4 coil heaters and 2 drain pan heaters All gas defrost units (G)(H) use 2 drain pan heaters
ELECTRIC DEFROST HEATER
MODEL SUFFIX 1, 2 & 5 SUFFIX 8 & 9
LSE LPE(G) (H) LAE(G) (H)
0500 0600 REH 0010 N/A
0600 0700
0800 0950 0650 REH 0020 N/A
1000 1200 0760
1200 1400 0900 REH 0030 REH 0080
1200
1500 1800 1500 REH 0040 REH 0085
1800 2100
1800 REH 0050 REH 0090
2400 2800
2700 REH 0060 REH 0097
3000 3500 3800
3600 3000 REH 0070 REH 0100
4200 4500
REW 0020
REW 0030
REW 0040
COMMERCIAL WALK-IN COOLERS LS, LP, LA
LOW SILHOUETTE
MOTOR
All Models
SUFFIX-1
120/1/60 RMT 0004
SUFFIX-2
240/1/60 RMT 0005
Note: Motors are mounted in sheet metal base.
Motors include RHW 1999 (4)
1Standard plastic guard
2Optional steel wire guard
FAN BLADE
LS LP, LA
RFN 0023 RFN 0022
FAN GUARD
ALL MODELS
RGR 00851
RGR 00842
DEFROSTTERMINATION RTH0002
RTH0003
N/A N/A
(LS) RTH00021
(LP, LA) RTH0009 RTH0002
RTH0002
FANDELAY
PANHEATERSAFETY
Note: 1RTH 0009 for optional LS Medium & Low Temperature
Note: DFK-2 includes RHW 4007, RHW 2011 & RFT 5135

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
8
TECHNICAL DATA (LS SERIES)
TECHNICAL DATA (LP SERIES)
Model R404A, R507 Operating Charge (lb.) Shipping Weight (lb.)
LSA 0400-1 0.9 36
LSA 0540-1 1.4 41
LSA 0650-1 1.8 45
LSA 0900-1 2.1 58
LSA 1100-1 2.8 64
LSA 1300-1 3.4 77
LSA 1700-1 3.8 96
LSA 2000-1 5.1 106
LSA 2600-1 6.7 140
LSA 3250-1 8.3 172
LSA 3900-1 10.0 203
LSE 0500-2 1.9 44
LSE 0600-2 2.6 48
LSE 0800-2 2.9 62
LSE 1000-2 3.9 68
LSE 1200-2 4.8 82
LSE 1500-2 5.3 108
LSE 1800-2 7.1 116
LSE 2400-2 9.4 150
LSE 3000-2 11.6 185
LSE 3600-2 13.9 219
LS(R)(T) 0500-1 1.4 42
LS(R)(T) 0600-1 1.8 46
LS(R)(T) 0800-1 2.1 60
LS(R)(T) 1000-1 2.8 66
LS(R)(T) 1200-1 3.4 79
LS(R)(T) 1500-1 3.8 100
LS(R)(T) 1800-1 5.1 112
LS(R)(T) 2400-1 6.7 145
LS(R)(T) 3000-1 8.3 178
LS(R)(T) 3600-1 10.0 211
Model R404A, R507 Operating Charge (lb.) Shipping Weight (lb.)
LPA 0600-1 1.5 74
LPA 0700-1 1.9 81
LPA 0950-1 2.2 102
LPA 1200-1 3.0 113
LPA 1400-1 3.7 135
LPA 1800-1 4.1 169
LPA 2100-1 5.4 189
LPA 2800-1 7.1 243
LPA 3500-1 8.9 297
LPA 4200-1 10.6 351
LPE 0600-1 2.6 79
LPE 0700-1 3.5 87
LPE 0950-1 4.0 110
LPE 1200-1 5.3 124
LPE 1400-1 6.6 148
LPE 1800-1 7.3 185
LPE 2100-1 9.7 209
LPE 2800-1 12.8 269
LPE 3500-1 15.9 330
LPE 4200-1 19.0 391

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
9
TECHNICAL DATA (LP SERIES) Model R404A, R507 Operating Charge (lb.) Shipping Weight (lb.)
LP(G)(H) 0600-1 1.5 75
LP(G)(H) 0700-1 1.9 82
LP(G)(H) 0950-1 2.2 105
LP(G)(H) 1200-1 3.0 115
LP(G)(H) 1400-1 3.7 137
LP(G)(H) 1800-1 4.1 173
LP(G)(H) 2100-1 5.4 193
LP(G)(H) 2800-1 7.1 248
LP(G)(H) 3500-1 8.9 304
LP(G)(H) 4200-1 10.6 359
TECHNICAL DATA (LA SERIES) Model R404A, R507 Operating Charge (lb.) Shipping Weight (lb.)
LAA 0650-1 2.2 100
LAA 0760-1 3.0 108
LAA 0900-1 3.7 131
LAA 1200-1 4.1 174
LAA 1500-1 5.4 190
LAA 1800-1 7.1 235
LAA 2700-1 8.9 272
LAA 3000-1 10.6 345
LAA 3800-1 13.3 438
LAA 4500-1 15.9 517
LAE 0650-2 4.0 107
LAE 0760-2 5.3 123
LAE 0900-2 6.6 141
LAE 1200-2 7.3 187
LAE 1500-2 9.7 219
LAE 1800-2 12.8 256
LAE 2700-2 15.9 315
LAE 3000-2 19.0 412
LAE 3800-2 24.3 508
LAE 4500-2 29.1 605
LA(G)(H) 0650-1 2.2 103
LA(G)(H) 0750-1 3.0 112
LA(G)(H) 0900-1 3.7 133
LA(G)(H) 1200-1 4.1 180
LA(G)(H) 1500-1 5.4 198
LA(G)(H) 1800-1 7.1 240
LA(G)(H) 2700-1 8.9 284
LA(G)(H) 3000-1 10.6 370
LA(G)(H) 3800-1 13.3 455
LA(G)(H) 4500-1 15.9 541
Note: • Operating charges are based on 30% liquid, 70% vapor at 25ºF suction
• Fan motor heat is not included in rating, add 342 BTUH (100W) per fan motor to room load
• Use suffix 1 for 120/1/60, suffix 2 for 240/1/60
• For 200-240/1/50 use suffix 2 and multiply capacity by 0.92
• For R134a or R-22 refrigerant charge, multiply R-404A by 1.09.
• Air throw for LS Series is 25 to 35 feet
• Air throw for LP Series is 12 to 18 feet
• Air throw for LA Series is 10 to 15 feet

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
10
1. PRELIMINARY INFORMATION
UNIT COOLER MODEL No.:
UNIT COOLER MODEL No.:
CONDENSING UNIT MODEL No.:
COMPRESSOR MODEL No.:
COMPRESSOR MODEL No.:
DATE:
SERIALNo.:
SERIALNo.:
SERIALNo.:
SERIALNo.:
SERIALNo.:
TECHNICIAN:
2. PRE-START-UP (Check each item when completed)
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
VERIFY REFRIGERANT CHARGE USING CHARGING CHART LABEL ON CONDENSING UNIT
CHECK REFRIGERANT AND OIL LEVEL IN SYSTEM
VERIFY THAT ALL DEFROST CONTROLS ARE FUNCTIONING PROPERLY
CHECK ALL FAN MOTORS AND MOTOR MOUNTS FOR TIGHTNESS
CHECK DRAIN LINES AND DRAIN PAN FOR PROPER DRAINAGE
CHECK DRAIN LINE HEATER FOR PROPER OPERATION
CHECK ALL FLARE CONNECTIONS FOR TIGHTNESS
4. CONTROLS
THERMOSTAT SETTING F
DEFROSTSETTING /DAY
/DAY
5. FIELD INSTALLED EXPANSION VALVE
MANUFACTURER
MODEL
F
MINUTES FAIL-SAFE
MINUTES FAIL-SAFE
PRESSURES (in cooling mode)
REFRIGERANT SUCTION PSIG
REFRIGERANT DISCHARGE PSIG
EVACUATION: NUMBER TIMES
TEMP AT COMPRESSOR
TEMP AT COMPRESSOR
FINAL MICRON
3. START-UP
ELECTRICAL
COMPRESSOR VOLTAGE
COMPRESSOR AMPS
COMPRESSOR
UNITCOOLER
L1 - L2
L1
VOLTS
VOLTS
L2 - L3
L2
PHASE
PHASE
L3 - L1
L3
HERTZ
HERTZ
TEMPERATURE
AMBIENT TEMPERATURE
DESIGN BOX TEMPERATURE
OPERATING BOX TEMPERATURE
OPERATING BOX TEMPERATURE
SUPERHEAT AT COMPRESSOR
SUCTION LINE TEMP. AT UNIT COOLER
SUPERHEAT AT UNIT COOLER
START-UP F
F
F
F
F
F
F
AFTER 24 HOURS OF OPERATION F
F
F
F
F
F
F
UNIT COOLER DRAIN LINE TRAPPED OUTSIDE OF BOX: YES OR NO

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
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REFPLUS SHALL NOT BE LIABLE:
WARRANTIES
RefPlus warrants the labeled (Serial No.) new RefPlus equipment and all parts
thereof, to be free from defects in workmanship and material at the time of
purchase. Applies to original purchaser only (nontransferable).
Under this warranty RefPlus shall be limited to repairing or exchanging any
parts, without charge FOB factory or nearest authorized parts wholesalers,
which may prove defective to the satisfaction of RefPlus, within one year from
date of start-up, not to exceed eighteen (18) months from date of shipment
from the factory.
The warranties to repair or replace as recited, are the only warranties, express,
implied, or statutory, made by RefPlus. No express or implied warranties
as to merchantability or fitness for a particular purpose or use. RefPlus neither
assumes, nor authorizes any person to assume for it, any other obligation or
liability in connection with the sale of said equipment or any part thereof.
1 - For any repairs or replacement by buyer without the written consent of
RefPlus, or when the equipment is installed or operated in a manner con-
trary to the instructions covering installation and service which accompanied
such equipment.
2 - For any damages, delays, or losses, direct or consequential, caused by
defects, nor for damages caused by short or reduced supply of materials,
fire, flood, strikes, acts of God, or circumstances beyond its control.
3 - When the failure or defect of any part or parts is incidental to
ordinary wear, accident, abuse or misuse; or when the serial number of
the equipment has been removed, defaced, altered, or tampered with.
4 - When this equipment is operated on low or improper voltages.
5 - For payment of any removal or installation charges of parts or units.
6 - When this equipment is moved to a different location other than the
original installation.
EXCLUSIONS
THIS WARRANTY SHALL NOT APPLY TO LOSS OF FOOD OR REFRIGERANT DUE TO FAILURE FOR ANY REASON.
RefPlus reserves the right to make any changes in the design or specifications of any product at any time without notice.

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
WI/O&M-04-04-R0-3K Printed in Canada.
USA & CANADA
1-888-816-2665
1385 De Coulomb,Boucherville, Quebec Canada J4B 7L8
Tel.:[phone] Fax:[phone]
www.refplus.com