"Camel" Liquid Ring Medical Vacuum
Medical Systems
5-1
5. Trouble Shooting
General Operation
Problem
Solution
No power to the system
1.)
Check main circuit breaker
2.)
Check system disconnect(s)
3.)
Check fuses in control panel
4.)
Check for 115V at output of control transformer(s)
Manual Operation
- HAND-OFF-AUTO switch in HAND position
Vacuum pump will not start. HOA
indicator light is not illuminated.
1.)
Check fuse(s) in control panel
2.)
Check motor starter in control panel
3.)
Check motor thermal overload and relays in the control panel. Press
the RESET pushbutton.
4.)
Check the setting of the overload relays.
Failure to reach required vacuum
1.)
Check the vacuum switch settings and operation of the vacuum
switch.
2.)
Low seal water flow to the vacuum pump.
3.)
Blocked or restricted inlet or discharge.
4.)
On duplex or triplex systems, inlet check valve on the other
vacuum pump stuck open.
5.)
Check vacuum pump for mechanical damage or excessive wear.
1.)
Check overload relays for tripping
2.)
Check for excessive cycling.
3.)
Check for improperly sized motor heaters.
Vacuum pump motor stops
If you have:
a.
Normal motor amperage
b.
Excessive motor amperage
1.)
Vacuum pump horsepower demand excessive, blocked discharge,
high backpressure.
2.)
Excessive seal water flow to vacuum pump. Check flow control
valve for proper operation.
3.)
Check for low voltage.
4.)
Check vacuum pump for build-up of scale.
5.)
Motor defective.
Vacuum pump stalling
(Recognized by high-pitched
screeching sound)
1.)
Check for operation beyond maximum design vacuum.
2.)
Check vacuum switch setting and operation of the vacuum switch.
3.)
Check operation of the inlet check valve, valve may be stuck
closed.
4.)
Excessive seal water flow to the vacuum pump. Check flow control
valve for proper operation.
5.)
Check and adjust clearance in the vacuum pump.
