MODEL 34850
PORTABLE
www.SurgeGuard.com
MODEL 34830
PORTABLE
INSTALLATION & OPERATING
INSTRUCTIONS
INPUT POWER CORDS
OVER/UNDER VOLTAGE PROTECTION
Should voltage drop below 102V or rise above 132V for more than 8
seconds, power to RV is turned off.
SEE TIME DELAY INDICATOR
The green LED indicates power to RV when
illuminated.
TIME DELAY INDICATOR
POWER ON
CAUTION WHEN FLASHING
SURGE
(No Protection When Lit)
SURGE GUARD
RV Power Protection
SURGE FAILURE
MODEL 34850
120/240V, 50 Amp
3850 Joules of Surge Protection
POWER PROTECTION
561-00967A
www.SurgeGuard.com
If the red “SURGE” indicator LED is on, it
means that the built-in surge protection has
been sacrificed to protect your equipment
and is no longer functioning properly.
Other features will still function, but the
unit is recommended
to be replaced.
CAUTION LIGHT POLARITY
PROTECTION
Indicates possible mis-wiring or current
to ground condition present. (Will prevent
power on 50 amp unit only.) The LCD screen
will also indicate REVERSE POLARITY.
POWER ON
CAUTION WHEN FLASHING
SURGE
(No Protection When Lit)
SURGE GUARD
RV Power Protection
MODEL 34830
120V, 30 Amp
2450 Joules of Surge Protection
POWER PROTECTION
www.SurgeGuard.com
561-00966A
When unit is plugged in, the red caution LED
is flashing indicating delay. The LCD at the
same will count up to 128 seconds. When the
delay expires, the red caution LED will stop
flashing and power will be applied to the RV.
Time delay will also be applied to reset once
power is restored to a safe range following
the 128 second delay.
This allows head
pressure to bleed off the A/C Compressor.
3 MODE SURGE PROTECTION
Protects the RV's sensitive electronic
systems and appliances from potentially
damaging
power
surge
events
without power interruptions to the RV.
OUTPUT POWER CORDS
FOR YOUR RECORDS
MODEL NO: ___________________
DATE PURCHASED: ____________
WHERE PURCHASED: __________
TECHNOLOGY RESEARCH, LLC
A Southwire Company
5250 140th Avenue North ▪ Clearwater, Florida 33760
(727) 535-0572
505-00088B
TECHNICAL SPECIFICATIONS
FEATURES
MODEL 34830 MODEL 34850
Operating Current
30 Amps
50 Amps
Operating Voltage
120 Volts
120/240 Volts
3600 Watts
12000 Watts
Maximum Watts
L-N, L-G,
Yes, L-N, L-G,N-G Yes, L-N,
N-G, L-L
3 Mode Surge Protection
Energy Dissipation
2450 Joules
Clamping Voltage
Maximum Spike Current
Over/Under Voltage Protection
Voltage Range
Trip Time
High Neutral Current Trip
3850 Joules
< 300 VAC
< 300 VAC
6500A per MOV
6500A per MOV
Yes
Yes
132/102V
132/102V
8-10 seconds
8-10 seconds
N/A
130%
200ºF
200ºF
128 seconds
128 seconds
Reverse Polarity Check
Yes
Yes
Voltage On Ground Check
Yes
Yes
LCD Voltage &
current reading
LCD Voltage &
current reading
1 year
1 year
Corrosion Resistant
Yes
Yes
Easy Installation
Yes
Yes
Industrial Contactor
Yes
Yes
Plug/Receptacle Temperature Trip
Time Delay for A/C
Power Indicator
Warranty
OPERATING INSTRUCTIONS
MODELS 34830 34850
1.
Plug the Surge Guard 34830/34850 into an approved RV receptacle
and plug the RV power cord into the Surge Guard.
2. Verify the delay indicator is flashing, the LCD is counting. The LCD
will read between 102V and 132V.
3. Once caution light stops flashing (this takes 128 seconds), verify
RV power is on.
NOTE: USING WITH POWER CORD ADAPTERS
Purchased power cord adapters will work in most cases with Surge
Guard but TRC does not recommend using them for full load applications
due to the possibility of over-heating. Be advised that power cord
adapters have been known to cause fires when Amps (electrical current)
Ratings are exceeded. Should you decide to use an adapter, our
recommendation is to check on the power cord from time to time to make
sure it is not overheating.
TROUBLESHOOTING
SYMPTOM
Caution light is
flashing
CAUSE
There is a fault.
Read LCD for information.
SOLUTION
For reverse polarity
or voltage on
ground, move RV
to new electrical
source.
LCD reads less than 1. Only partial
1. Move to a new
102V on first line or
power at 50
source
L1, L2 Low on either
Amp source.
2. Use inverter
line.
2. No power at
or generator
source
power
When first plugging High or low voltage Change site or use
into pedestal power, is present at source. inverter or generator
caution light flashes
power
momentarily, then
goes out.
LCD DISPLAY INDICATORS
REPLACE
SURGE
Surge Expended
OPEN
GROUND
Open Ground
REVERSE
POLARITY
Any line wired to neutral
L1 High
118V 42A
115V 32A
L2 High
Voltage > 132
L1 Low
118V 42A
L1 High
L2 Low
Voltage < 102
NEUTRIP
CUR=65A
Current > 130%
CUR
HIGH
Current > 125%
PLUG
OVERHEAT
Temperature > 200ºF
Display for Normal Operation
During normal operation, the Surge Guard's LCD screen alternates
between two displays, a main screen showing voltages and currents
for power Lines 1 and 2 coming into the RV; and a secondary screen
showing whether power to the RV is ON or OFF, with voltage for Line 1
coming into the RV.
The main screen for Model 34850 (50Amp) will show the voltages and
currents for Lines 1 and 2, whereas Model 34830 will only show Line 1
since there is no Line 2 for that Model.
There are two rows or text lines on the LCD screen. The top row for the
main screen shows information for Line 1 in the following format: 120V
50A. This means that the voltage on power Line 1 coming into the RV
is at 120 volts and the RV is drawing 50 amps of current on Line 1. The
bottom row of the main screen for 34850 shows voltage and current for
Line 2.
Model 34830
Model 34850
120V 25A
120V 25A
Main Screen
120V 30A
RV STATUS ON/OFF
L1 120V
Secondary Screen
RV STATUS ON/OFF
L1 120V
The top row of the secondary screen for both models shows RV ON
or RV OFF, and the bottom row shows the voltage on power Line 1 as
L1=120V.
If the power coming into the RV is less than 102 volts on either Line 1
or 2, then the main screen will show L1 Low or L2 Low, in place of the
voltage or current. If the power coming in is greater than 132 volts, then
the main screen will show L1 High or L2 High.
Display During Fault Conditions
Delay
When the Surge Guard is powered up, the LCD
011 Sec
screen will display "Delay" and the elapsed time in
seconds until it reaches 128 seconds. After the delay
is completed, the unit will go to the Normal Operating screen showing
voltages and currents as described above. If there is a fault condition
during normal operation such as high or low voltage, the unit will display
that L1 or L2 is high or low; and when power comes back within range
(102V-132V) the unit will begin the Delay as described above before
returning to the main screen that shows the voltages and currents.
Reverse Polarity Conditions
If the polarity of the voltages coming into the RV is REVERSE
reversed, then the Surge Guard unit will display POLARITY
the REVERSE POLARITY until this condition is
corrected. Also, current or voltages on ground will be displayed as
reversed polarity.