Field & Installation Guidelines; Technical Data Summary Of Module; Assembly Line And Field Brazing - Emerson ZB Copeland Scroll Product Manual

ZB
Series
Application Guide
Compressor Supply Voltage Troubleshooting
• Remove phase sensing leads from the module from L1/L2/L3.
• Use a voltmeter to measure the incoming 3 phase voltage on L1/L2/L3.
WARNING: L1/L2/L3 could be at a potential up to 600VAC.
• Ensure proper voltage on each phase.
• Remove power to the module for a minimum of 5 seconds to reset and
replace all wire leads. Reenergize the module. If the M1-M2 contacts
are open with proper voltage to T1-T2, L1/L2/L3 and proper resistance
to S1-S2 then the module is faulty and should be replaced.
Table 4

Technical Data Summary Of Module

Emerson P/N
Manufacturer P/N Kriwan 69SU
T1-T2 Module Power
Voltage Supply
Frequency
M1-M2 Module Output Contacts
Maximum Voltage
Maximum Current
Minimum Current
Relay Output
Power Output
S1-S2 Thermal Protection
Trip Out Resistance
Reset Resistance
Reset Time
Manual Reset
L1-L2-L3 Phase Monitoring
Phase Sensor
Phase Monitoring Circuit Rating
Trip Delay
Lockout
Reset For Lockout
071-0641-00
Kriwan 69SU
120V & 240V
50Hz & 60Hz
250VAC
5 Amps
100 milliamps
5 A, 300 VA
<3 VA
4500W ± 20%
2750W ± 20%
30 min ± 5 min
T1-T2 interrupt for minimum of 5 sec
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
6. Field & Installation Guidelines

6.1 Assembly Line And Field Brazing

ZB Scroll compressors are available with stub tube and Rotalock
connections. The stub tube version has copper plated steel suction and
discharge fittings. Due to the different thermal properties of steel and
copper, brazing procedures may have to be changed from those commonly
used The guidelines below gives a description for assembly line and field
brazing procedures.
3
New Installations
•
The copper-coated steel suction and discharge tubes on scroll
compressors can be brazed in approximately the same manner as any
copper tube.
•
Recommended brazing materials: Any silfos material is recommended,
preferably with a minimum of 5% silver. However, 0% silver is acceptable.
•
Be sure compressor tube fittings I.D. and connecting tube O.D. are clean
prior to assembly. If oil film is present wipe with denatured alcohol,
Dichloro-Trifluoroethane or other suitable solvent.
•
Using a double-tipped torch apply heat in Area 1. As tube approaches
brazing temperature, move torch flame to Area 2.
•
Heat Area 2 until braze temperature is attained, moving torch up and
down and rotating around tube as necessary to heat tube evenly. Add
braze material to the joint while moving torch around joint to flow
braze material around circumference.
•
After braze material fl ows around joint, move torch to heat Area 3.
This will draw the braze material down into the joint. The time spent
heating Area 3 should be minimal.
•
As with any brazed joint, overheating may be detrimental to the
final result.
13
2 1
Figure 2