5-1. Speed Controls (Figures 9a and 9b)
Seat lowering speed and backrest reclining speed can be
adjusted by the speed control knob on the solenoid valve
block. The solenoid valve numbers and functions are
shown in Fig.9b.
A. Remove the pump cover.
The solenoid valve block is located on the left side at the
front of the chair base. Each speed control knob is located
on the rear side solenoid valve block.
B. Loosen the lock nut for the speed control knob.
C. Turning the speed control knob clockwise to decrease the
speed and turning counterclockwise to increase the speed.
D. After adjustment, tighten the lock nut and reattach the pump cover.
Figure 9a
Figure 9b
5. Adjustment
5-2. Setting Seat Motion Control Limits (Figures 10 & 11)
Raise the seat half way up.
Turn off the power.
Remove the pump cover for access to
the chair control PCB.
Remove the PCB enclosure cover by
unscrewing two screws. Turn on power.
Screws &
Washers
PCB Enclosure
Cover
Figure 11 (Control PCB)
Set the slide switch on upper right corner of the PCB to the “LIM” position. Red LED will light
and beeper will sound at 1.5 second intervals.
Figure 10
Slide Switch
Relay
2 Types
100V Type(100V~120V)
200V Type(220V~240V)
IC
Transformer
Solenoid Valve Functions
SV1 : Seat Raise
SV2 : Seat Lower
SV3 : Backrest Raise
SV4 : Backrest Recline
4
3
2
1
Seat Lowering
Speed Control Knob (SV2)
Backrest Reclining
Speed Control Knob (SV4)
Solenoid
Valve Block
The chair movement will be locked if the speed is reduced excessively.
Oil may leak from the speed control knob if the speed is increased excessively.
CAUTION
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