Connecting Electrical Service
The following steps outline the procedure for connecting electrical service to the tumbler.
•3 Phase models – Each tumbler must be connected to its own individual branch circuit breaker, not fuses, to avoid the possibility of “single phasing” and causing premature failure of the motor(s).
•Electrical service must be connected using the appropriate permanent rigid metal conduit system.
•Service conductors must be copper only.
For an existing service, determine your service voltage and conductor amperage. Carefully review the tumbler serial plate ratings and Electrical Requirements section of this manual. If service is inadequate it must be upgraded by a qualified electrical contractor. Never connect an improper or inadequate service to any machine.
Configuring Your Tumbler for Other Service Voltages
Several gas and steam tumbler models have been designed to be field convertible to other service voltages. Refer to Table 9 for these models:
| If your Serial Plate | Your tumbler can be | |
Models | converted to the | ||
| voltage is: | following voltages: | |
|
| ||
|
|
| |
T30 | 120 Volt/60 Hertz/ | ||
1 Phase | 1 Phase | ||
| |||
|
|
| |
T30 | 100 Volt/60 Hertz/ | ||
1 Phase | 1 Phase | ||
| |||
|
|
| |
T30 | 200 Volt/50 Hertz/ | 100 Volt/50 Hertz/ | |
1 Phase | l Phase | ||
| |||
|
|
| |
T30/ | 240 Volt/60 Hertz/ | ||
T45 | 3 Phase | 3 Phase | |
|
|
| |
T30 | 380 Volt/50 Hertz/ | ||
3 Phase | 3 Phase | ||
| |||
|
|
|
Table 9
NOTE: Electric models are not field convertible and must be connected to service specified on serial plate.
Electrical Requirements
If tumbler requires conversion for use on another service voltage, complete the steps detailed in the Conversion Instructions section prior to connecting service to machine.
If tumbler does not require conversion or has been converted according to the Conversion Instructions section of this manual, continue with step 1.
NOTE: The wiring diagram is located in the upper junction box or upper contactor box.
1.For new service, install a circuit breaker or fused disconnect of proper voltage and current rating as close to each tumbler as possible.
2.Route service conduit from circuit breaker panel or disconnect panel to tumbler service connection box. Conduit routing should not obstruct access for maintenance or servicing. Refer to Service/ Ground Location.
3.Pull conductors through conduit and attach to circuit breaker and ground connection. Secure service ground wire to the grounding screw or lug. Attach service conductors to appropriately labeled positions on the terminal block. Make sure all connections are secure.
4.Check electrical service phase sequence (3 Phase models only) as follows:
a.Energize the electrical service and momentarily start the tumbler. Check the direction of cylinder rotation. If the cylinder rotates clockwise as viewed from the front, the phase sequence is correct. If the cylinder rotates counterclockwise, proceed with step b.
b.Disconnect power to machine, disconnect and reverse the L1 and L2 connections on the terminal block.
Electrical Connections
All gas and steam tumblers require a single service connection to TB1 of the upper unit junction box only. The serial plate reflects current draw, breaker/fuse size and conductor amperage required for the entire machine.
All electric tumblers require separate service connections for each upper and lower unit. Serial Plate ratings reflect current draw, breaker/fuse size and conductor amperage required per unit.
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