Maxon RA-45 - Valves Not Shifting or Low Pressure Issues

Domino’s RA-45 Schematics and Troubleshooting
289905-01-200
M-21-08 REV. A
Page 35 of 36
Troubleshooting Chart
Problem
Possible Cause
Correction
2. SV3 (in) valve not shifting.
SV1 & SV3 (out) valves not shifting.
Check electrical connections at valve.
Remove and clean valve if needed.
3. Low pump pressure.
Adjust in/out pressure relief valves. 1800 psi for
out, 2400 psi for in.
4. Damaged/worn roller bearing.
With platform at the “out” position check if Load
Finger is not resting Rail Stop. This is sign roller
bearing wear.
Replace rollers.
Platform not going up or down,
motor runs.
1. Battery voltage low. Solenoids not
activating.
Tighten power and ground connections. Charge
batteries and check charging system.
Battery voltage should be > 12.2 V.
2. SV2 valve not shifting.
Check controller S2 term. voltage. Should be >10v.
Check electrical connections at valve.
Remove and clean valves if needed.
Load
Finger
Rail Stop
Controller
S2 Terminal