BLAIN HYDRAULICS
KV1P
KV1S
KV2P
KV2S
Adjustments UP
Valves are already adjusted and tested.
Check electrical operation before changing valve settings.
Test that the correct coil is energized, by removing the nut and raising the coil slighty to feel pull.
Nominal Settings:
Adjustment
1
level with flange face. Adjustment
5
(KV1S
&
KV2S) level with flange face.
Warning:
Only qualified personnel should adjust or service valves. Unauthorised manipulation may result in injury,
loss of life or damage to equipment. Prior to servicing internal parts, ensure that the electrical power is switched off,
cylinder line is closed and residual pressure in the valve is reduced to zero.
1. Up Bypass:
When the pump is started, the unloaded car should remain stationary at the floor for a period of about 1
second before starting upwards. The length of this delay is according to the setting of adjustment
1
. 'In' (clockwise)
shortens the delay, 'out' (c-clockwise) lengthens the delay.
Up Stop:
At floor level, the pump-motor is de-energized. The stop may be abrupt depending on load and speed of
approach. No adjustment possible.
S Relief Valve:
'In' (clockwise) produces a higher, 'out' (c-clockwise) a lower maximum pressure setting. After turning
'out', open manual lowering
H
for an instant.
Important: When testing relief valve, close ball valve gradually.
1. Up Bypass:
When the pump is started, the unloaded car should remain stationary at the floor for a period of about 1
second before starting upwards. The length of this delay is according to the setting of adjustment
1
. 'In' (clockwise)
shortens the delay, 'out' (c-clockwise) lengthens the delay.
5. Up Stop:
At floor level coil
A
is de-energized. Through a time relay the pump must run approx. 1 second longer to
allow the car to stop smoothly by valve operation according to the setting of adjustment
5
. 'In' (clockwise) provides
a softer stop, 'out' (c-clockwise) a quicker stop. Pre-adjustment: With coil A disconnected and the pump running,
5
should be turned in until the car starts to move up, then slowly turned out until the car stops.
Alternative Up Stop:
At relatively higher speeds and with the time relay arrangements as with 'up stop' above, the
car may travel to just above floor level. In overtravelling the floor, down levelling coil
D
is energized, lowering the car
smoothly back down to floor level where
D
is de-energized.
S Relief Valve:
'In' (clockwise) produces a higher, 'out' (c-clockwise) a lower maximum pressure setting. After turning
'out', open manual lowering
H
for an instant.
Important: When testing relief valve, close ball valve gradually.
1. Up Bypass:
When the pump is started, the unloaded car should remain stationary at the floor for a period of about 1
second before starting upwards. The length of this delay is according to the setting of adjustment
1
. 'In' (clockwise)
shortens the delay, 'out' (c-clockwise) lengthens the delay.
Up Stop:
At floor level, the pump-motor is de-energized. The stop may be abrupt depending on load and speed of
approach. No adjustment possible.
S Relief Valve:
'In' (clockwise) produces a higher, 'out' (c-clockwise) a lower maximum pressure setting. After turning
'out', open manual lowering
H
for an instant.
Important: When testing relief valve, close ball valve gradually.
1. Up Bypass:
When the pump is started, the unloaded car should remain stationary at the floor for a period of about 1
second before starting upwards. The length of this delay is according to the setting of adjustment
1
. 'In' (clockwise)
shortens the delay, 'out' (c-clockwise) lengthens the delay.
5. Up Stop:
At floor level coil
A
is de-energized. Through a time relay the pump must run approx. 1 second longer to
allow the car to stop smoothly by valve operation according to the setting of adjustment
5
. 'In'' (clockwise) provides
a softer stop, 'out' (c-clockwise) a quicker stop. Pre-adjustment: With coil
A
disconnected and the pump running, 5
should be turned in until the car starts to move up, then slowly backed off again until the car stops.
Alternative Up Stop:
At relatively higher speeds and with the time relay arrangements as with 'up stop' above, the car
may travel to just above floor level. In overtravelling the floor, down levelling solenoid
D
is energized, lowering the
car smoothly back down to floor level where
D
is de-energized.
S Relief Valve:
'In' (clockwise) produces a higher, 'out' (c-clockwise) a lower maximum pressure setting. After turning
'out', open manual lowering
H
for an instant.
Important: When testing relief valve, close ball valve gradually.