1. INSPECTION

Inspection should be performed upon receipt. If damage has occurred in shipment, file a claim with the carrier immediately. It is necessary to contact your supplier or Tinker & Rasor, be sure to include all information such as serial number, purchase order number and invoice number.
 
 

2. GENERAL INFORMATION

Application of the Model QC:
The Model QC may be connected to either the input or output side of the cathodic protection circuit. Note: Observe rating limits shown I the specifications. It is not necessary to observe polarity with output terminals.
 

WARNING: Do not connect the interrupter to the DC output side of rectifiers that have an efficiency transformer. Always interrupt the AC (input) circuit.
 

The Model QC has Two Timing Ranges:
With the slide switch in the X1 position the complete timing cycle is 30 seconds as shown on the label on top of the unit.

A 15 second complete cycle is available by placing the slide switch in the + 2 position. Actual interruption times are shown on the same label.
 

Relay Contact Positions:
Relay is "OPEN" under the following conditions:

          1. When the power switch is in the "OFF" position.
          2. During the second portion of the operating cycle.

Relay is "CLOSED" under the following conditions:

          1. When the power switch is in the "ON" position and the operate/reset switch is in the 
               "RESET" position.
          2. During the first portion of the operating cycle.
 

Interrupter Power Sources:

• Uses 12 volt lantern battery.
• Interrupter is delivered with a standard 12 lantern battery; but any external D.C. source between 10 VDC and 15 VDC may be used if desired.
• See battery information.

3. PANEL SWITCH & INDICATOR

Switches:

• Operate/reset switch: Place in "RESET" position.
• Slide switch: X1 position.
• Power ON/OFF switch: "ON" position, this will close the relay contact.
• Select timing cycle desired from the label to coincide with position on the rotary switch.
• Start timing by switching OPERATE/RESET toggle to OPERATE. Using an accurate  time source, start timing on exact 30-second times. The Model QC is at least as accurate as a good watch during its operation.

Two or more Model QC Current Interrupters may be synchronized by starting on any exact time.
 

Indicator:
Meter: Provides a continuous readout of the battery conditions. Battery should be replaced if pointer falls in "REPLACE" area.
 

Terminal Lugs:
The terminal lugs are the rugged, heavy duty copper SLU type, rated at 70 amperes. Versatility and convenience permit both lug and clamping type connections. Polarity of terminals is unimportant.
 
 

4. BATTERY INFORMATION
Battery performance is related to the following factors:
 

Duration of the Timing Cycles:
The shorter the "RELAY CLOSED" time, the longer will be the useful battery life. Typically up to 40 hours or longer.
 

Minimum Available Voltage:
When the battery voltage falls below nine volts, there may not be enough power available to operate the relay.

Note: Meter indications within the "OK" area do not forecast remaining operating hours.
 

Ambient Temperatures:
At 32 degrees Fahrenheit, the battery delivers less than 50% of its energy. At 22 degrees Fahrenheit, the battery may not deliver enough energy to operate the Interrupter. (At these temperatures, an automotive 12 volt battery can be used). Do not exceed 15 volts.

Note: Additional battery information is available from Tinker & Rasor
 

Installation Procedures:
When replacing the battery, observe polarity (red = positive, black = negative). Reversed polarity will cause the meter needle to deflect to the left, off-scale, indicating an improper connection. The Model QC will not be harmed by such a connection, but it will not operate.

Use only 12 volt batteries such as:

• Burgess #TW2-X or #TW2
• RCA #VS342
• Eveready #732

5. MAINTENANCE
The Current Interrupter does not require maintenance other than occasional battery replacement. Normal care is use and storage will give many years of trouble-free service. However, should the Current Interrupter require factory service. . .see below.
 
 

6. SHIPPING INSTRUCTIONS 

All instruments being returned for repair should be sent PREPAID to either address below: 

Tinker & Rasor
417 Agostino Road
P.O. Box 281
San Gabriel, CA 91778