advertisement
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
WALK-IN COOLERS
SERIES
LS-LP-LA-LV
2
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . 3
INSTALLATION
S
TEP
1 – C
OMPLETE
P
RE
-I
NSTALLATION
C
HECKS
. . . 3
S
TEP
2 – L
OCATION
. . . . . . . . . . . . . . . . . . 3
S
TEP
3 – M
OUNTING
. . . . . . . . . . . . . . . . . . 3
S
TEP
4 – C
ONNECT
D
RAIN
L
INE
. . . . . . . . . . . 3
S
TEP
5 – R
EFRIGERANT
C
ONNECTIONS
. . . . . . . . 4
S
TEP
6 – E
XPANSION
V
ALVE
C
ONNECTION
. . . . . . 4
S
TEP
7 – W
IRING
. . . . . . . . . . . . . . . . . . . 4
START-UP
L
EAK
T
ESTING AND
E
VACUATION
. . . . . . . . . . . . 4
F
AN
M
OTOR
. . . . . . . . . . . . . . . . . . . . . . . 4
F
AN
D
ELAY
D
EFROST
T
ERMINATION
C
ONTROL
. . . . . 4
F
AN
D
ELAY
D
RAIN
P
AN
C
ONTROL
. . . . . . . . . . . 4
C
HECK
S
UPERHEAT
. . . . . . . . . . . . . . . . . . . . 4
D
EFROST
S
YSTEM
. . . . . . . . . . . . . . . . . . . . 5
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . 5
I NSPECTION . . . . . . . . . . . . . . . . . . . . . . . . 5
C LEANING . . . . . . . . . . . . . . . . . . . . . . . . . 5
UNIT SPECIFICATIONS . . . . . . . . . . . . . . . 6
TROUBLESHOOTING CHART. . . . . . . . . . . . 6
T ECHNICAL D ATA . . . . . . . . . . . . . . . . . . . . . 7
T ECHNICAL D ATA ( CONT ’ D ) . . . . . . . . . . . . . . . 8
R EFRIGERATION S YSTEM
S TART UP C HECK L IST . . . . . . . . . . . . . . . . . 10
WARRANTIES . . . . . . . . . . . . . . . . . . . . 11
NOMENCLATURE
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
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 @ 10
o
F T.D. 22,400 Btu/hr
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
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.
WARNING
Before installation, always check to be sure main power to systems is OFF. Electrical shock can cause personal injury or death.
INTRODUCTION
These instructions describe installation, start-up, and service for the RefPlus refrigeration unit coolers.
INSTALLATION
S
TEP
1 -
C
OMPLETE
P
RE
-I
NSTALLATION
C
HECKS
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.
S
TEP
2 - L
OCATION
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
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.
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.
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.
S
TEP
3 - M
OUNTING
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.
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.
S
TEP
4 - C
ONNECT
D
RAIN
L
INE
For all unit coolers, a drain line union is recommended 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.
3
4
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
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.
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.
S
TEP
5 - R
EFRIGERANT
C
ONNECTIONS
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.
S
TEP
7 - W
IRING
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.
IMPORTANT
The use of a calibrated pressure gauge and regulator must always be used with nitrogen gas cylinders.
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.
S TEP 6 - E XPANSION are field supplied.
V ALVE C ONNECTION
All unit coolers are supplied with a 1/2 in. OD sweat expansion valve connection. Expansion valves
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.
START-UP
CAUTION
Before starting unit cooler, be sure wire fan guards are secured in place over each fan.
L
EAK
T
ESTING AND
E
VACUATION
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.
F
AN
M
OTOR
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.
F AN D ELAY D EFROST T ERMINATION C ONTROL
This control located on the coil plate senses the coil temperature. To provide fan delay, the defrost thermostat must be turned off.
1.
2.
3.
Set thermostat between 20ºF and 30ºF or above.
Adjust defrost timer up to maximum of 45 minutes.
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.
F AN D ELAY D RAIN P AN C ONTROL
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.
C
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.
HECK
S
UPERHEAT
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.
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
NOTE
Minimum compressor suction superheat of 20ºF may override these recommendations on some systems with short line runs.
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.
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.
3.
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.
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.
3.
Measure the temperature of one of the distributor tubes close to the unit cooler coil (inlet).
Subtract the inlet temperature from the outlet temperature. The difference is superheat.
NOTE
This method will yield accurate results as long as the pressure drop through the unit cooler coil is low.
DEFROST SYSTEM
A
IR
D
EFROST
U
NIT
C
OOLERS
: Fan motors run continuously and a defrost time clock or low-pressure setting stops the compressor when defrost is required.
E
NOTE
The unit cooler must not be in operation more than 16 hours per day.
LECTRIC D EFROST U NIT
R
EVERSE
C
YCLE HOT GAS
D
EFROST
U
NIT
C
OOLERS
: 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.
C OOLER : 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.
NOTE
Using a suction to liquid heat exchanger is recommended.
SERVICE
I
NSPECTION
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.
2.
3.
4.
5.
Check all wiring and insulators.
Check and tighten all electrical connections.
Inspect contactors for proper operation and for worn contact points.
Check all fan motors. Tighten motor mount bolts/nuts and tighten fan set screws.
Clean condenser coil surface.
6.
7.
Check refrigerant and oil level in the system.
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.
T HREE P IPE H OT G AS D EFROST U NIT
C
OOLERS
: 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 recommended. The drain pan is warmed by the entering hot gas to avoid freezing. The time clock cycles fan motors, liquid and hot gas solenoids.
NOTE
A field-installed pressure regulating valve may be required on low temperature systems to control compressor crankcase pressure.
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.
C
LEANING
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.
6
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
UNIT SPECIFICATIONS
F
OR
A
LL
U
NITS
:
- 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 S
ERIES
:
- 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 S
ERIES
:
- 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 S
ERIES
:
- 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.
SYMPTOMS
Fan(s) will not operate
Room temperature too high
TROUBLESHOOTING CHART
POSSIBLE CAUSES
1. Main switch open
2. Blown fuses
3. Defective motor
4. Defective timer or defrost thermostat
5. Unit in defrost cycle
6. Coil does not get cold enough to reset thermostat
POSSIBLE CORRECTIVE STEPS
1. Close switch
2. Replace fuses. Check for short circuits or overload conditions.
3. Replace motor
4. Replace defective component
5. Wait for completion of cycle
6. Adjust fan delay setting of thermostat
1. Room thermostat set too high
2. Superheat too high
3. System low on refrigerant
4. Coil iced-up
Ice accumulating on ceiling around evaporator and/or on fan guards, venturi, or blades
1. Defrost duration is too long
2. Fan delay not delaying fans after defrost period
3. Defective defrost thermostat or timer
4. Too many defrosts
Coil not clearing of frost during defrost cycle
1. Coil temperature not getting above freezing point during defrost
2. Not enough defrost cycles per day
3. Defrost cycle too short
4. Defective timer or defrost thermostat
Ice accumulating in drain pan 1. Defective heater
2. Unit not pitched properly
3. Drain line plugged
4. Defective drain line heater
5. Defective timer or thermostat
1. Adjust thermostat
2. Adjust thermal expansion valve
3. Add refrigerant
4. Manually defrost coil and check defrost controls for malfunctions
1. Adjust defrost termination thermostat
2. Defective defrost thermostat or not adjusted properly
3. Replace defective components
4. Reduce number of defrost
1. Check heater operation
2. Adjust timer for more defrost cycles
3. Adjust defrost thermostat or timer for longer cycle
4. Replace defective component
1. Replace heater
2. Check pitch and adjust if necessary
3. Clean drain line
4. Replace heater
5. Replace defective component
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
COMMERCIAL WALK-IN COOLERS LS, LP, LA
LOW SILHOUETTE
MOTOR
All Models
SUFFIX-1
120/1/60
SUFFIX-2
240/1/60
RMT 0004
RMT 0005
FAN BLADE
LS LP, LA
RFN 0023 RFN 0022
Note: Motors are mounted in sheet metal base.
Motors include RHW 1999 (4)
1
2
Standard plastic guard
Optional steel wire guard
FAN GUARD
ALL MODELS
RGR 0085 1
RGR 0084 2
ELECTRIC DEFROST HEATER
LSE
0500
0600
0800
1000
1200
MODEL
LPE(G) (H)
0600
0700
0950
1200
1400
LAE(G) (H)
0650
0760
0900
1200
1500 1500
1800
1800
2100
1800
2400 2800
3000
3600
3500
4200
2700
3800
3000
4500
Note: All electric defrost units (E) use 4 coil heaters and 2 drain pan heaters
SUFFIX 1, 2 & 5
REH 0010
REH 0020
REH 0030
REH 0040
REH 0050
REH 0060
REH 0070
SUFFIX 8 & 9
N/A
N/A
REH 0080
REH 0085
REH 0090
REH 0097
REH 0100
All gas defrost units (G) (H) use 2 drain pan heaters
All Models
DEFROST TERMINATION
FAN DELAY
PAN HEATER SAFETY
Note: 1 RTH 0009 for optional LS Medium & Low Temperature
R&T
RTH 0003
N/A
DEFROST CONTROL
RTH 0002
G&H
(LS) RTH 0002 1
(LP, LA) RTH 0009
RTH 0002
RTH 0002
N/A
E
DRAIN FITTING KIT
All Models
DFK-2
Note: DFK-2 includes RHW 4007, RHW 2011 & RFT 5135
TERMINAL BLOCK
All Models
REM 0004
WIRING HARNESS
All Models
REW 0020
REW 0030
REW 0040
7
8
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
TECHNICAL DATA (LS SERIES)
TECHNICAL DATA (LP SERIES)
R404A, R507 Operating Charge (lb.)
2.8
3.4
3.8
5.1
0.9
1.4
1.8
2.1
6.7
8.3
10.0
4.8
5.3
7.1
9.4
11.6
13.9
1.9
2.6
2.9
3.9
3.4
3.8
5.1
6.7
8.3
10.0
1.4
1.8
2.1
2.8
R404A, R507 Operating Charge (lb.)
1.5
1.9
2.2
3.0
3.7
4.1
5.4
7.1
8.9
10.6
9.7
12.8
15.9
19.0
2.6
3.5
4.0
5.3
6.6
7.3
Model
LSA 0400-1
LSA 0540-1
LSA 0650-1
LSA 0900-1
LSA 1100-1
LSA 1300-1
LSA 1700-1
LSA 2000-1
LSA 2600-1
LSA 3250-1
LSA 3900-1
LSE 0500-2
LSE 0600-2
LSE 0800-2
LSE 1000-2
LSE 1200-2
LSE 1500-2
LSE 1800-2
LSE 2400-2
LSE 3000-2
LSE 3600-2
LS(R)(T) 0500-1
LS(R)(T) 0600-1
LS(R)(T) 0800-1
LS(R)(T) 1000-1
LS(R)(T) 1200-1
LS(R)(T) 1500-1
LS(R)(T) 1800-1
LS(R)(T) 2400-1
LS(R)(T) 3000-1
LS(R)(T) 3600-1
LPE 0600-1
LPE 0700-1
LPE 0950-1
LPE 1200-1
LPE 1400-1
LPE 1800-1
LPE 2100-1
LPE 2800-1
LPE 3500-1
LPE 4200-1
Model
LPA 0600-1
LPA 0700-1
LPA 0950-1
LPA 1200-1
LPA 1400-1
LPA 1800-1
LPA 2100-1
LPA 2800-1
LPA 3500-1
LPA 4200-1
Shipping Weight (lb.)
64
77
96
106
36
41
45
58
140
172
203
82
108
116
150
185
219
44
48
62
68
79
100
112
145
178
211
42
46
60
66
Shipping Weight (lb.)
74
81
102
113
135
169
189
243
297
351
209
269
330
391
79
87
110
124
148
185
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
TECHNICAL DATA (LP SERIES)
TECHNICAL DATA (LA SERIES)
Model
LP(G)(H) 0600-1
LP(G)(H) 0700-1
LP(G)(H) 0950-1
LP(G)(H) 1200-1
LP(G)(H) 1400-1
LP(G)(H) 1800-1
LP(G)(H) 2100-1
LP(G)(H) 2800-1
LP(G)(H) 3500-1
LP(G)(H) 4200-1
R404A, R507 Operating Charge (lb.)
3.7
4.1
5.4
7.1
1.5
1.9
2.2
3.0
8.9
10.6
Shipping Weight (lb.)
137
173
193
248
75
82
105
115
304
359
Model
LAA 0650-1
LAA 0760-1
LAA 0900-1
LAA 1200-1
LAA 1500-1
LAA 1800-1
LAA 2700-1
LAA 3000-1
LAA 3800-1
LAA 4500-1
LAE 0650-2
LAE 0760-2
LAE 0900-2
LAE 1200-2
LAE 1500-2
LAE 1800-2
LAE 2700-2
LAE 3000-2
LAE 3800-2
LAE 4500-2
LA(G)(H) 0650-1
LA(G)(H) 0750-1
LA(G)(H) 0900-1
LA(G)(H) 1200-1
LA(G)(H) 1500-1
LA(G)(H) 1800-1
LA(G)(H) 2700-1
LA(G)(H) 3000-1
LA(G)(H) 3800-1
LA(G)(H) 4500-1
R404A, R507 Operating Charge (lb.)
5.4
7.1
8.9
10.6
2.2
3.0
3.7
4.1
13.3
15.9
5.4
7.1
8.9
10.6
13.3
15.9
2.2
3.0
3.7
4.1
9.7
12.8
15.9
19.0
4.0
5.3
6.6
7.3
24.3
29.1
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
198
240
284
370
455
541
103
112
133
180
219
256
315
412
107
123
141
187
508
605
Shipping Weight (lb.)
190
235
272
345
100
108
131
174
438
517
9
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:
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
SERIAL No.:
SERIAL No.:
SERIAL No.:
SERIAL No.:
SERIAL No.:
TECHNICIAN:
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
3. START-UP
ELECTRICAL
COMPRESSOR VOLTAGE
COMPRESSOR AMPS
COMPRESSOR
UNIT COOLER
L1 - L2
L1
VOLTS
VOLTS
L2 - L3
L2
PHASE
PHASE
L3 - L1
L3
HERTZ
HERTZ
F
F
F
F
F
F
F
AFTER 24 HOURS OF OPERATION
F
F
F
F
F
F
F
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
PRESSURES (in cooling mode)
REFRIGERANT SUCTION
REFRIGERANT DISCHARGE
EVACUATION: NUMBER TIMES
UNIT COOLER DRAIN LINE TRAPPED OUTSIDE OF BOX:
PSIG
PSIG
YES
4. CONTROLS
THERMOSTAT SETTING
DEFROST SETTING
F
/DAY
/DAY
F
OR
MINUTES FAIL-SAFE
MINUTES FAIL-SAFE
5. FIELD INSTALLED EXPANSION VALVE
MANUFACTURER
MODEL
NO
TEMP AT COMPRESSOR
TEMP AT COMPRESSOR
FINAL MICRON
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
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.
REFPLUS SHALL NOT BE LIABLE:
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 contrary 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.
11
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
USA & CANADA
1-888-816-2665
1385 De Coulomb, Boucherville, Quebec Canada J4B 7L8
Tel.: (450) 641-2665 Fax: (450) 641-4554 www.refplus.com
advertisement
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Related manuals
advertisement