56 – Setting and testing the PRV valve
Considerations:
•
The pressure relief valve is part of the blain hydraulic valve that limits the pressure that
can build in the system. The PRV should be set at 1
¼
times the max working pressure.
Materials Required:
•
Test weights totalling the capacity of the elevator
Tools recommended:
•
3mm allen key
Procedure:
•
Remove the cap that covers the adjustment, refer to
diagram 55A
•
Loosen the set screw that locks the adjustment, refer to
diagram 55A
•
Determine the max working pressure
o
Run the elevator up at full speed while loaded to capacity
o
Multiply the max working pressure by 1
¼
to determine the pressure the PRV
should be set at
NOTE: The maximum pressure a power unit can be set it is marked on the tag
which is shipped with the unit. This pressure will be either 750psi or the
pressure produced when the motor is diagram 26 Amps, whichever is less.
•
Test the current PRV pressure setting
o
While the elevator is running up at full speed, close the ball valve next to the
blain valve
o
Note the maximum pressure that the gauge reads
o
Open the ball valve
•
If the maximum pressure was more pressure than the PRV should be set at, turn the
adjustment counterclockwise one full turn
•
Retest the PRV pressure
•
If the current PRV setting is determined to be less then the current setting:
o
Run the elevator up at full speed
o
Close the ball valve
o
Turn the adjustment in slowly until the PRV setting is correct (max working
pressure X 1
¼
th
)
NOTE: The maximum pressure a power unit can be set is marked on the tag
which is shipped with the unit. This pressure will be either 750psi or the
pressure produced when the motor is diagram 26 Amps, whichever is less.
RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGE
ELEVATING
.COM
201
Summary of Contents for BES 3
Page 1: ...BES 3 RESIDENTIAL ELEVATOR INSTALLATION MANUAL OCTOBER 2019...
Page 18: ...3B Overview of rail wall RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 17...
Page 20: ...3D Hydraulic power unit RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 19...
Page 35: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 34...
Page 40: ...7A Sample layout drawing RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 39...
Page 41: ...7B Sample elevation drawing RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 40...
Page 43: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 42...
Page 49: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 48...
Page 57: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 56...
Page 58: ...13A Jack post detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 57...
Page 61: ...14A Cylinder detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 60...
Page 65: ...16A Sling RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 64...
Page 70: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 69...
Page 74: ...20A Sheave detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 73...
Page 76: ...21A Sling roping detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 75...
Page 84: ...24A Pre stroke detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 83...
Page 87: ...26A Jack post roping detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 86...
Page 89: ...27A Sling extensions detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 88...
Page 91: ...28A Sling roller detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 90...
Page 93: ...29A Cab floor RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 92...
Page 105: ...34A Cab inline RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 104...
Page 106: ...34B Cab through RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 105...
Page 107: ...34C Cab 90 degree RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 106...
Page 112: ...36A Hoistway wiring detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 111...
Page 115: ...37A Cartop electrical RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 114...
Page 121: ...39A Sensor head RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 120...
Page 122: ...39B Coded strips RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 121...
Page 127: ...40A TRAVEL CABLE RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 126...
Page 129: ...41A Control panel diagram RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 128...
Page 163: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 162...
Page 164: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 163...
Page 165: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 164...
Page 166: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 165...
Page 167: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 166...
Page 171: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 170...
Page 172: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 171...
Page 173: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 172...
Page 174: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 173...
Page 175: ...RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 174...
Page 187: ...49A Handrail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 186...
Page 205: ...57A Telephone line detail RESIDENTIAL ELEVATOR INSTALLATION MANUAL CAMBRIDGEELEVATING COM 204...