Confirming/Changing Dss Starter Type - CPI Indico 100 Series Service And Installation Manual

CPI Canada Inc.

2.13.2 Confirming/Changing DSS Starter Type

The low speed and high speed phase shift capacitors for the stator start winding must be matched to the
desired stator type, for example the required high speed phase shift capacitor is 6 uF for "R" type stators
and 7.5 uF for GE Maxiray type stators. Therefore, for example, a dual speed starter configured for an "R"
type stator CANNOT drive a GE Maxiray type stator.
Use the steps in this section to verify that the dual speed starter is compatible with the stator in
the desired tube.
1. Record the part number of the dual speed starter assy in the subject generator. This is printed on
a label near the top of the dual speed starter chassis.
2. Locate that part number in table 2-3, then note the value of the H.S. SHIFT CAPAC and the L.S.
SHIFT CAPAC per the table. Those are the values of the phase shift capacitors in the dual speed
starter. Only tubes requiring those capacitor values may be connected to the dual speed starter.
3. If it is desired to use a different tube from that shown in the compatible X-ray tubes section of the
customer product description form, confirm that the desired tube (housing and insert) is listed in
table 2-3 AND that the required dual speed starter part number for that tube per table 2-3 is the
same as is fitted in your generator.
4. If the preceding steps confirm that the desired tube is fully compatible with the generator, you may
proceed with setting the tube type as per section 2.13.1.
5. If in the preceding steps it is determined that the desired stator IS NOT compatible with the
generator, the phase shift capacitors in the dual speed starter will need to be changed to match
the requirements of the desired tube. Replacement capacitor kits are available to do this as noted
in the next step.
6. Note the required H.S. SHIFT CAPAC and L.S. SHIFT CAPAC values, and the corresponding
dual speed starter part number for the desired tube per table 2-3. Using those capacitor values,
refer to table 2-2. From this table select the required conversion kit to convert to capacitors as
required for the selected tube. The conversion kits are available through the factory/customer
support.
IF MAKING THE ABOVE CONVERSION, PLEASE BE SURE TO CHANGE THE PART
NUMBER IDENTIFIED IN STEP 1 TO THE NEW CONFIGURATION USING AN INDELIBLE
MARKER. THIS WILL ENSURE THAT CONFIGURATION CONTROL OF THE PRODUCT IS
MAINTAINED
HIGH SPD SHIFT CAPAC
NOTE: CAPACITOR VALUES SHOWN IN TABLES 2-3 AND 2-4 ARE EQUIVALENT VALUES OF THE
PHASE SHIFT CAPACITORS IN THE DUAL SPEED STARTER. FOR EXAMPLE, THE
STANDARD "R" VERSION OF THE DUAL SPEED STARTER USES TWO 12.5 uF
CAPACITORS CONNECTED IN SERIES TO GIVE NOMINAL 6 uF FOR HIGH SPEED USE.
THIS 6 uF CAPACITANCE IS CONNECTED IN PARALLEL WITH A 25 uF CAPACITOR TO
GIVE 31 uF FOR LOW SPEED USE AS SHOWN IN THE TABLES.
Indico 100 Series Service Manual
LOW SPD SHIFT CAPAC
6 uF
7.5 uF
20 uF
5 uF
5 uF
Ch # 740895-04
TABLE 2-2
31uF
47 uF
60 uF
30 uF
45 uF
Rev. H
Installation
CONVERSION KIT P/N
734424-00
734424-01
734424-02
734424-03
734424-04
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