Roadmaster AddaBRAKE 8800 - Protection Modes; Extended Braking Protection; Responding to an Audio Alert

Step E
Set the brake pressure
 The brake pressure setting is the amount of force
AddaBRAKE will applytothetowedvehicle’sbrakes.
Thesettingisbasedonweight—theweightofthetowed
vehicle,plustheweightofallitscontents.
Note: 1999 and newer Jeep Grand Cherokees are
set to 45 psi, regardless of the weight.
 Refertothe“BrakePressureChart”(below)tofind
themaximum brake pressure settingfor yourvehicle.
Initially, set brake pressure near (but not above) the
maximumrecommendedvalue.
 Thedegreetowhichthissettingwillaffectthemo-
torhomewillvary,dependingonthesizeandweightof
the motorhome in comparison to the size and weight
of the towed vehicle. A sharp pull at the motorhome
may indicate that the brake pressure is set too high.
Or,evenifthepressureissetcorrectly,youmayprefer
tolowerthesettinguntilthetowedvehiclebrakeswith
lessforce.
Do not set brake pressure above the maximum
recommended value. If brake pressure is set above
the maximum, AddaBRAKE will apply excessive
force to the towed vehicle’s brake pedal, which will
cause tire and/or brake system damage, as well as
other consequential, non-warranty damage.
Conversely, do not lower the brake pressure set-
ting to the point that it negates the benefit of the
supplemental braking system. Insufficient brake
pressure will lengthen stopping distance, and may
also cause a loss of vehicular control.
Failure to follow these instructions may cause
property damage, personal injury or even death.
1. Pulloutontheregulatorcontrolknob(Figure13)to
DAY-TO-DAY OPERATION
Brake Pressure Chart
Weightof Maximum
towedvehicle recommended
andallitscontents pressuresetting
1,500-2,000pounds ................................... 25psi
2,000-2,500pounds ................................... 35psi
2,500-3,000pounds ................................... 35psi
3,000-3,500pounds ................................... 40psi
3,500-4,000pounds ................................... 45psi
4,000-4,500pounds ................................... 50psi
4,500-5,000pounds ................................... 55psi
over5,000pounds ..................................... 60psi
For Jeep Grand Cherokee…
  Maximum
  recommended
Towedvehicle pressuresetting
JeepGrandCherokee ............................... 45psi
(1999andnewer)
unlockit.
2. Then,pressandholdthe“Test”buttondown(Figure
13).Iftheairreservoirisnotcompletelyfilled,waitfor
theaircompressortofillthereservoir.
3. Next,turntheregulatorcontrolknobclockwiseto
increasethebrakingpressure,orcounterclockwiseto
decreasethebrakingpressure.
4. Whentheneedleonthepressuregaugematches
thepressuresettingyouhavechosen,releasethe“Test”
button.Then,pushtheregulatorcontrolknobdownto
lockitinplace.
  Itisonlynecessarytosetthebrakingpressureonce
— after the pressure has been set, AddaBRAKE will
alwaysbrakewiththesameforce.
5. To check the brake pressure,pressandholdthe
“Test” button down. As the pedal clamp extends, the
needleonthegaugewillpointtotheselectedpressure
setting.
Step F
Connect the wiring harness;
test the break away system
1. Connect the AddaBRAKE wiring harness to the
breakawaywiringharness(two-prongconnectors)and
thebrakesignalwire(bulletconnectors).
2. Atthetowedvehicle,clipthesteelbreakawayca-
ble(Figure1)tothelargeringonthebreakawaypin
(Figure 1), then clip the other end of the steel break
awaycabletotherearofthemotorhome,closetothe
center.
continued on next page
Figure 13
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