Settings Of Safety Valves; Overload Relay And Fuse Settings - Quincy Compressor QOFT 20 Instruction Book

Instruction book
Model 460 V
QOFT 20 max AWG 4
QOFT 25 max AWG
00
QOFT 30 max AWG
00
QOFT 40 max AWG
00
QOFT 50 max AWG
00
QOFT 60 busbar for
M6 cable lug
9.3

Settings of safety valves

Settings
Reference
Intercooler safety valve
High-pressure safety valve, compressors with maximal
working pressure of 8.6 bar (125 psi)
9.4

Overload relay and fuse settings

The table below gives the values for the setting of the motor overload relay (F21) and the main
cooling fan (Q15).
UL/cUL approval
Type
QOFT 20
QOFT 25
QOFT 30
QOFT 40
QOFT 50
QOFT 60
9829 3199 74
Supply Frequency
voltage (V) (Hz)
460 60
460 60
460 60
460 60
460 60
460 60
Set pressure 60 Hz
54 psig
160 psig
Setting Setting Q15
F21 (A) (A)
18.5 1.4
22.6 1.4
26.6 1.4
34.5 2.6
41.8 2.6
50.6 6.2
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