Trouble Shooting - Dairy Tech Perfect Udder 10G Owner's Manual

TROUBLE SHOOTING

COMBI PASTEURIZERS
• This guide is intended for use as a
troubleshooting directive. All electrical tests
and diagnostics should be performed only
by those skilled in the electrical profession
• All electrical testing and repairs should be
performed by an experienced professional
or technician trained in the electrical trade
• Serious injury or death may result from
improperly testing or handling this
equipment
• This unit contains HIGH VOLTAGE electricity
that can cause serious harm or death
All parts can be ordered at our website
www.dairytechinc.com
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1. No Power to the Control Panel
a. Check to be certain unit is plugged into 240vac outlet and
that there is power at the outlet.
b. Be certain that breakers in panel box are not tripped
i. If the breakers are being tripped, the system is likely
being shorted to ground. Look for any blown fuses to
indicate trouble areas and consult the fuse layout for
more detail. Have the system checked by a certified
electrician before operating.
ii. Also check the heating element fuses located behind
the rear panel.
c. Check fuses 1 & 2 on the back of the control panel. These
are the Line 1 and Line 2 supply fuses. If blown, replace
with appropriate fuse. DO NOT REPLACE WITH OVERSIZED
FUSES.
d. Check the toggle switch to see if it is lit when switched on.
This should indicate that power is getting to the switch.
Check for 240vac power between the bottom switch
terminals. Once the switch is flipped check for 240VAC at
the top two terminals on the switch. Replace if necessary.
e. The control itself could be malfunctioning or internally
damaged. This is only rarely seen. Call for assistance.
2. Milk Does Not Heat.
a. Heat components: Control calls for heat by signaling the SS
Relays for each element separately. The elements are also
wired through the heater Hi-Limit Thermostat on the back
of the tank.
b. Is there power getting to the SSRs? Check voltage from Pin
1 on each SSR back to L2. This tells us if power to the SSR.
Once activated, check 240VAC power from Pin 2 on the SSR
to be certain the relay is closing. If no power, check the
breaker but power will also be off to the unit.
c. Is the DC signal from the control arriving at the SSR
at pins 3 & 4? Check across these pins for 24VDC and
troubleshoot controller if no signal here during heating
cycle. See diagram.