Enerpac PR-Series Electric - Handbuch (Seite 10)

10
6.4 Fuse Replacement (See Figures 9 and 10)
WARNING: Electric Shock Hazard! High voltage is
present inside the jack even when motor is off. Be sure
that jack power cord is disconnected from the electrical
outlet (or other electrical power source) before removing or
installing fuses, or before opening the electrical enclosure door
(if equipped). Failure to observe this precaution could result in
death or serious personal injury.
A step-down transformer mounted inside the jack electrical
enclosure supplies low voltage power to the remote control
pendant and various other electrical components. Fuses help
protect the transformer and components from damage.
All jack models contain two fuses: a transformer primary fuse
(power input) and a transformer secondary fuse (power output).
Refer to Table 9 for replacement fuse information. Always use
fuses only of the specified ratings and sizes.
WARNING: Failure to install fuses of the proper
specifications may cause fire, erratic operation and/or
damage to jack. Death, serious personal injury or
property damage could result.
On jacks equipped with a single-phase electrical system, the
fuses are located on the lower portion of the jack electrical
enclosure. The fuse holders are mounted on the outside of the
enclosure and can be assessed without removing the enclosure
cover. See Figure 9.
On jacks equipped with a three-phase electrical system, the fuses
are located inside the jack electrical enclosure. The enclosure
door must be opened to gain access to the fuses. See Figure 10.
If a fuse blows, it may indicate an excessive line voltage condition.
Always verify that the line voltage is correct before replacing any
blown fuses. A fuse may also blow if the jack power cord or
pendant cable becomes worn or damaged.
WARNING: Immediately replace a worn or damaged
power cord or pendant cable. Do not resume jack
operation until repairs are completed. Electric shock
may occur if contact is made with broken or exposed wiring.
Death or serious personal injury may result.
If one or both fuses continue to blow after being replaced and the
problem cannot be determined, have the jack electrical system
inspected and repaired by an Enerpac authorized service center.
Table 9 - Replacement Fuse Information
Jack Model
Beginning with:
(See figures 9 and 10 for fuse locations)
A
Primary Fuse
(power input)
B
Secondary Fuse
(power output)
PREMB (115V)
PREMI (230V)
PREME (200V)
40mA 250V 1/4" x
1-1/4" Time Delay
300mA 250V 1/4" x
1-1/4" Time Delay
PREMG (208-240V)
1A 600V 13/32" x
1-1/2" Time Delay
4A 125V 5mm x
20mm Time Delay
PREMW (380-415V)
600mA 600V 13/32"
x 1-1/2" Time Delay
4A 125V 5mm x
20mm Time Delay
PREMJ (440-480V)
500mA 600V 13/32"
x 1-1/2" Time Delay
4A 125V 5mm x
20mm Time Delay
PREMR (575V)
400mA 600V 13/32"
x 1-1/2" Time Delay
4A 125V 5mm x
20mm Time Delay
Note: Fifth letter of model number will be B, E, I, G, W, J or R,
depending on jack electrical configuration.
PRIMARY
FUSE
40 mA
SECONDARY
FUSE
300 mA
Key:
A . Primary Fuse
B . Secondary Fuse
C . Circuit Breaker Reset Button
C
A B
Figure 9, Fuse and Reset Button Locations,
Single-Phase Models
B
A
C
Key:
A . Primary Fuse
B . Secondary Fuse
C . Reset Button,
Motor Overload Relay
Figure 10, Fuse and Reset Button Locations,
Three-Phase Models
Be sure power cord is
disconnected before
replacing fuses.
Be sure power cord is
disconnected before
replacing fuses.