Circuit Breaker/Pump Switch CHP-1
Quantity in Basket:
Catalog No.: CHP-CB2
Shipping Weight: 0.20 pounds
This is the "Pump" motor on/off switch and 20-amp circuit
breaker for the CHP-1 Hydro-Press. It has a "bat handle"
operator or lever, and mounts to the top panel of the press
with a threaded shaft and nut. To replace it, unplug
the press, remove the front panel, and carefully note the
wires which connect to the switch. Carefully unscrew the
nut holding the switch to the panel, from the top. You
can then manipulate the switch to make the connecting
posts more easily seen, and move the wires to their
corresponding position on the new switch.
Symptoms of a failed unit are:
If the motor or other components in the motor circuit
are faulty and cause the breaker to trip (off), it is
doing its job and the problem is a defective motor, or
motor starting capacitor, or short circuit to the motor.
This would be evidenced by the following:
- Toggle moves without resistance -- and/or --
- Pump does run regardless of position of the toggle
- But Fans and work lamp operate normally
To test the switch, remove power from the unit and
remove the front cover. Disconnect wires from one
terminal of the switch only. Use an ohmmeter (or the
resistance measurement setting of a multi-meter) to read
across the switch terminals. With the switch off, the
meter should show "infinite" or open circuit. With the
switch on, the meter should show "zero ohms" or short
- Switch has normal resistance and can be snapped "on".
- Switch then snaps off by itself.
Another way to test without an ohmmeter is to connect
a jumper wire across the switch, plug in the machine, and
see if the motor runs with the key switch turned on. The
only problem with this test is that if another component
is defective and causing excess current draw, the breaker
providing power to your wall outlet may be tripped or
you may see smoke arise from overheated wiring, causing
further damage. (This is not the recommended test, but is only
a field expediency only in the absence of any other means).
Note: A qualified industrial electrician should be called
to test and service the machine if there is any doubt
about the user's ability and experience with electrical
equipment. Wiring diagrams and trouble shooting information
are provided on Corbins.com
website under the details of the CHP-1 Hydro Press.
There are two circuit breakers in the CHP-1 press. This
is CB2 on the diagram, and the other is a 5-amp push-button
breaker also mounted on the top panel, which protects the
logic wiring, relays, transducers and timers. If you wish
to disable the press further than you can with the key
switch, pull up on the small 5 ampere circuit breaker
button near the rear of the top panel. The work lamp,
fans and motor will run but no power is provided to the
Circuit Breaker, 5a (Logic Control)