Maintenance; Replacing The Fuse; Table 5.1 Recommended Spare Parts - Edwards STP Series Instruction Manual

5

Maintenance

◇ Stop the STP pump, and remove TMS power cable, before performing maintenance
of the TMS control unit (such as fuse replacement).
DO NOT touch any place other those specified when performing maintenance or
inspecting the TMS control unitl because it could cause shock, malfunction, or short
circuit.
5.1

Replacing the Fuse

◇ Remove the probable causes of the blown fuse (Ex. a problem with the remote
input signal, and other) before replacing the fuse.
◇ Always use specified and rated fuses.
NOTICE
◇ If fuses are blown frequently even after they are replaced, contact Service office.
◇ Each fuse is attached for replacement.
The following are protective fuses used in the TMS control unit.
F1:250 V, 0.5 A (Normal acting fuse)
For control power protection
F2:250 V, 2 A (Normal acting fuse)
For TMS heater protection
F3:250 V, 0.5 A (Normal acting fuse)
For TMS valve protection
F4:250 V, 1.5 A (Normal acting fuse)
For solenoid valve heater protection
Product name
Fuse for F1, F3 MQ4-500mAN1
Fuse for F2
Fuse for F4
TMS Unit INSTRUCTION MANUAL for STP-301CVB3

Table 5.1 Recommended Spare Parts

Type
(SOC)
MQ4-2AN1
(SOC)
MQ4-1.5AN1
(SOC)
Specification
0.5 A, 250 V Normal acting type
φ5.2×20 mm
2.0 A, 250 V Normal acting fuse
φ5.2×20 mm
1.5 A, 250 V Normal acting fuse
φ5.2×20 mm
5-1