Gardner Denver ELECTRA-SAVER II Service Manual page 15

Section 4 for typical wiring diagrams however, use only the
wiring diagrams supplied with the unit for final connections
Starter — The main starter is to be mounted at a location
selected by the user at the time of installation The first
three (3) feet of line from the motor conduit box to the
starter must be of flexible conduit to maintain effective
vibration isolation Electrical connections to other parts of
the unit (instrument panel fan motor, etc) from the starter
do not require flexible conduit since the compressor and
motor are already isolated from these parts See Table
110-16 (a) National Electrical Code for correct working
clearance
Grounding — Equipment must be grounded in accordance
with Table 250-95 of the National Electrical Code.
AWARNING
An
equipment ground jumper equal in size to the
equipment ground conductor must be used to connect
the compressor motor to the main base since they are
isolated from the base by vibration mounts~ The oil
cooler fan motor frame will be grounded to the main
base with a grounding conductor compatible with the
fan short circuit protection at the factory.
MOTOR LUBRICATION –
Long time satisfactory opera-
tion of an electric motor depends in large measure on the
bearings and timely lubrication. The following charts show
recommended grease qualities and regressing intervals for
motor supplied with ball bearings For additional informa
tion refer to the motor manufacturers instructions
The following procedure should be used in regressing
1.
2.
3.
4.
5.
6.
7.
Stop the unit
Disconnect the unit from the power supply.
Remove the relief plug and free the hole of hardened
grease.
Wipe the lubrication fitting clean and add grease with
a hand-operated grease gun.
Leave the relief plug temporarily off. Reconnect the
unit and run for about 20
grease,
Stop the unit Replace
Restart the unit
GREASE RECOMMENDATIONS
.
Worked Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Viscosity, SSU At lOOO F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soap Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N-H Bomb Minimum Hours For20 PSl Drop At210° F. . . . . . . . . . . . . . . . . . . . . . . . .
Bleeding Maximum Weight% ln500Hours 212" F. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rust Inhibiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REGRESSING INTERVAL
minutes to expell the excess
the relief plug.
Standard
Service
265-296
400-550
Lithium
750
10
Yes
High
Temperature
220-240
475-525
Lithium
1000
3
Yes
Type Of Service Typical Examples Rating Relubrication Interval
150 HP and Below
18 Months
Standard One Or two-shift Operation
Over 150 HP 12 Months
150 HP and Below
9 Months
Severe Continuous Operation
Over 150 HP
6 Months
150 HP and Below
4 Months
Very Severe Dirty Locations High Ambient Temperature
Over 150 HP 2 Months
13-9-630
Section 2 Page 6