Installation and operation manual
KSGD02 Revision: 1.4
Page 12 of 16
R
KSGD-01WS-B
4. Testing
The operation of the detector can be verified in 2 ways depending on the accuracy required;
4.1 Measuring the Gv
When testing the detector the Gv voltage must be checked using a multi-meter at various points
during the test procedure. The Gv voltage is measured on the 6 way test / calibration connector.
The location of this connector varies on older variants of the detector, along with the connection
terminals. The calibration kit includes a test lead for easy connection and measurement of the Gv.
4.1 Bump test procedure
The reactivity of the detector can be verified
using propane or butane.
This is primarily aimed at verifying the operation of the relay & buzzer as the propane or butane
used is not verification that the sensor can detect refrigerant at the appropriate concentration.
1.
Firstly verify
Normal Operation
, using a multi-meter measure the Gv voltage. The Gv
should be between 0.4 VDC and 1 VDC. If the Gv is outside this range the sensor is reacting
to refrigerant or a contaminant. The room should be well ventilated to eliminate any
potential refrigerant or contaminant and the voltage should subside.
Operating State
Dual Relay version
Connection
terminal states
Single Relay version
Connection
terminal states
LED
Buzzer
Gv
Voltage
Normal operation
3 & 4
5 & 6
3 & 4
4 & 5
Constant
GREEN
OFF
0.4>1VDC
CLOSED
OPEN
CLOSED
OPEN
2.
Using a small amount of butane or equivalent, spray gas at the sensor for approximately 30
to 40 seconds.
3.
The sensor will enter the
High Level Alarm
state.
4.
After removing the gas the sensor should recover and return to
Normal Operation.
It may be necessary to ventilate the room with fresh air for the sensor to recover. The time
for the detector to recover will depend upon the concentration of gas detected by the
sensor and the time period but is typically less than 5 minutes. It is recommended that the
sensor is not subjected to cigarette lighter gas for a prolonged period (>3 minutes) as
recovery may become significantly longer.
Operating State
Dual Relay version
Connection
terminal states
Single Relay version
Connection
terminal states
LED
Buzzer
Gv
Voltage
High Level Alarm
Reading> ~4000ppm
For > 30 seconds
3 & 4
5 & 6
3 & 4
4 & 5
Flashing
RED
>
AMBER
(4Hz)
Pulses
4Hz
>4.2VDC
OPEN
CLOSED
OPEN
CLOSED
Fig 4.1 Current model detector Gv voltage
Fig 4.2 Older model detector Gv voltage
6
1
6
1
6
1
Gv
GND
5VDC
6
5 4 3 2 1
1
2 3 4 5
6
CURRENT
MODEL
OLDER
MODELS
Gv
Test lead red tracer should
be plugged into pin 1
