Bray 63 N4 Series - Manual (Page 5)

All information herein is proprietary and confidential and may not be copied or reproduced without the expressed written
consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed
knowledge and experience with their application.
SERIES 63 N4 Operation & Maintenance Manual
Manual Number OM-63/N4-001
Date: September 2, 2010 Page 5 of 5
Causes of Improper Operation
• Incorrect Pressure: Check valve pressure.
Pressure to valve must be within range speci-
fied on nameplate.
• Faulty Control Circuits: Check the elec-
trical system by energizing the solenoid. A
metallic click signifies that the solenoid is
operating. Absence of the click indicates loss
of power supply. Check for loose or blown
fuses, open-circuited or grounded coil, bro-
ken lead wires or splice connections.
• Burned-Out Coil: Check for open-circuited
coil. Replace coil as necessary. Check supply
voltage; it must be the same as specified on
nameplate.
• Low Voltage: Check voltage across the coil
terminals. Voltage must be at least 85% of
nameplate rating
• Coil Replacement
1. Disconnect grounding and supply wires
from coil.
2. If the solenoid is a DIN65 model, re-
move the retaining clip and slip coil off
the plugnut/core tube assembly.
If the solenoid is a NEMA 4 model, un-
screw the four (4) retaining screws and
pull off the coil
3. Install new coil and re-secure to the sole-
noid body in reverse order of step 2.
4. Reconnect grounding and supply wires
to coil.